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hf acid deaths

If HF is not rapidly neutralized and the fluoride ion bound, tissue destruction may continue for days and result in limb loss or death. This article was taken from the June1997 issue of DIGEST and was based upon the paper which appeared in Ann.Occup.Hygiene, Vol. The deceased did not have access to an emergency shower to remove the HF, instead the skin was washed from a hose that provided water at a very low flow rate. Think of those scenes in the Alien movies, where the alien's blood drips through solid metal, destroying everything in its path. 1341-49-7), a chemical that dissociates into HF when dissolved in water and therefore has similar toxicity. Hydrogen fluoride gas, even at low levels, can irritate the eyes, nose, and respiratory tract. Hydrofluoric acid is a chemical that is a very strong acid. polytetrafluoroethylene (Teflon). x�\�nˑ��W�f� ���wϬd��1��„��f!�&{,���R�^��ĉ�s2�A��-�T�q�Y�\�R���t����t�Zl��j��6�]So�3�X/��?�ׇ���i�_���}���+{�滣@���M��n;[ֳ��&�l������O��/��lg�ٺ����e�����֋M}�����f:3�/o�ԓ�_�x=y��������߯w�ꋦ�ΫI}m�>�̋��o�_[�3.�������}������i؜�f�����o�v�{~�~�H�� �����?\ֿTX��~�8�G�q����B�鬢8����1v�RH���I�b��R��8~� �w͵��+��d���zr>�82��T�D59`�e�.W���y���C�����s�\M�� �d��|>��k��x���|1#_���+��h�.g��vQM0���`l�Ʒ��(�@1)�ҩ�#�R� �߱?JOD�} ��R){#�n��z��K �ˡh1}5qD�~��=r��.��#`{3|�N��!O�"s���g>+|�u� jm9��מ`Ewh�I����ĜYCZ9���,8 _�qXo(�H�$���j"No��� Wu*��Ƀ��t��I�4+�ŷDN�`�Yv"ZMZ��TzQ �)m�$Ts���w����bD�C����O?�����]� 4�l>:c���Ʈ����O�VU��f�Ϫ�e�a �b BX�H����3��_�3�Q�R"u�^2,j�(')r��S�R�̖�D�J|�N��\��#Yr�Ě��-��*y| �Av| �^{�($�ʳ(����J The chemical known as HF has the ability to penetrate the skin tissues deep to the bone – it penetrates more quickly than any other typical acid. Inhalation may also have been another route of exposure due to the relatively high vapour pressure of HF acid.Ergonomics. HF may be known as Hydrogen fluoride (UN 1052), hydrofluoric acid (UN 1790) or fluorohydric acid. �8)ԯ��K��>A�#����� Hydrofluoric Acid . Hydrofluoric acid (HF) is only a weak acid, meaning it doesn't fully dissociate into its ions in water. HF may be known as Hydrogen fluoride (UN 1052), hydrofluoric acid (UN 1790) or fluorohydric acid. Head, Undergraduate Information: Dr. Beatriz Cisneros, Chemistry Advisor, An equal access/equal opportunity university. Even so, it's probably the most dangerous acid in this list because it's the one you're most likely to encounter. 1 Deaths have been reported from concentrated acid burns (involving ≥ 50% HF solutions) to as little as 2.5% of body surface area, which is equivalent to approximately one hand and forearm. death will result from depletion of calcium from blood and tissues. %PDF-1.3 As a result of the design of the container, decanting from the 2-1 hydrofluoric acid container was awkward, involving the pronation of the forearm. In addition to the strongly corrosive hydrogen ions, HF generates fluoride ions which can readily penetrate skin and tissue, and result in necrosis of subcutaneous tissue. Fume hood must be used for all HF work. Properties Names: gaseous state: hydrogen fluoride or anhydrous hydrofluoric acid aqueous solution: hydrofluoric acid, fluorhydric acid, fluoric acid Chemical Formula: HF 4 0 obj Both versions are commonly referred to as HF in research and industry. HF-based products often include additional chemicals that can burn, including sulfuric acid and phosphoric acid. Provision of a fume cupboard that had more working space; Use of smaller sized bottles or better designed 2-1 70%w/w hydrofluoric acid containers (to minimize awkward pouring postures) or introduction of a graduated dispensing unit to negate pouring the acid; Provision of an appropriate bench height for the operator. Acid resistant apron 4. Contact HSEO for replenishment of supply. A standard geology technique, which involved the dissolving of sedimentary rock with mineral acids (hydrochloric and hydrofluoric acid), was being undertaken in a fume cupboard. Pain associated with skin exposure to HF may not occur for 1-24 hours. %��������� Contact with the eyes could result in … HF Acid Attacking Bone matter. Goggles 2. Unlike other acids which can be rapidly neutralized, the neutralization of HF may proceed for days during which tissue destruction may continue. However, HF is not only a strong corrosive, but also highly toxic towards higher concentra- tions: Local effects include tissue destruction and necrosis, deaths have been reported from concentrated acid burns to as little as 2.5 % body surface area. Sensitive viewers beware images of HF acid burn damage to hand and legs. Full-protectors, a face shield, rubber boots, safety goggles and mid-arm length PVC gloves should have been worn by the deceased when hydrofluoric acid was being used in the fume cupboard. Elemental fluorine is produced from it. It is usually in liquid form. HF can penetrate the skin extremely easily and decalcifies bones leading to tissue necrosis, which may result in amputation and death. �3���[����we�YB����yF�&�e;Y�|�Bos Thus, hydrogen fluoride (HF) is produced in two forms, as anhydrous hydrogen fluoride (the gaseous form, HF(g)) and as aqueous hydrofluoric acid (the aqueous solution form, HF(aq)). The original article was written by Luciano Muriale, Evelyn Lee, and Steven Trend of Worksafe Western Australia, and John Genovese of the Chemistry Centre of Western Australia and published by Elsevier Science Ltd. Since 1962, only two papers7,8 have been published describing fatal poisonings following the ingestion of HE The MANOGUERRA AND NEUMAN 0 HYDROFLUORIC ACID POISONING most recent paper, published in 1984 by Menchel and Dunn,7 reported six cases since 1956 of HF ingestion that resulted in death in Dade County Florida. Although a weak acid, i.e., it is not strongly disassociated, is used to etch glass. The DIGEST is a newsletter published by the Universities Safety Association. Hydrofluoric acid vapors are also an inhalation hazard and can cause ocular irritation. Release of Hydrofluoric acid from Marathon Petroleum Refinery, Texas, USA. Aqueous hydrofluoric acid is a contact-poison with the potential for deep, initially painless burns and ensuing tissue death. decalcification of bone, cardiac arrhythmia and death. Even brief exposure to high levels of the vapor may cause severe damage to the respiratory system. Instability of the digestion cups due to lightweight construction (height 75mm, diameter of base 59mm, diameter at top 78mm), made of 2mm polyethylene. Suitable gloves include those made with PVC and neoprene. This safe work procedure applies to working directly with HF as a reagent as well as procedures where HF is a by-product. 23 Because calcium is required for cell life, fluoride’s calcium-binding capacity may result in rapid cell death. Hydrofluoric acid also may be found in home rust removers. As a result of the fact that the technician was working alone, it is unclear whether the spill was from the digestion cup or the 2-1 bulk acid container. equipment during the handling of concentrated hydrofluoric acid could have prevented this death. This article discusses poisoning from swallowing, breathing in, or touching hydrofluoric acid. Ingestion: May be fatal if swallowed. At physiologic pH, HF dissociates to fluoride and hydrogen ions, leading to … Thus, hydrogen fluoride (HF) is produced in two forms, as anhydrous hydrogen fluoride (the gaseous form, HF(g)) and as aqueous hydrofluoric acid (the aqueous solution form, HF(aq)). Face shield (plastic) 3. An ergonomic assessment of the work station indicated the following: The laboratory personnel could have minimised the likelihood of a spill through the introduction of cup supports for the digestion cups. Background Case reports have identified hydrofluoric acid (HF) as causing fatal work injury, and HF has both local and systemic toxicity. Hydrofluoric (HF) acid, one of the strongest inorganic acids, is used mainly for industrial purposes (eg, glass etching, metal cleaning, electronics manufacturing). Thanks to the big screen, many of us think of acids as dangerous, burn-through-anything substances. Hydrogen fluoride gas is an acute poison that may immediately and permanently damage lungs and the corneas of the eyes. Even brief exposure to high levels of the vapor may cause severe damage to the respiratory system. Vinegar (which contains ethanoic acid) and citric acid (found in, guess what, citrus fruits)… Hydrofluoric acid is corrosive and can cause severe burning of the mouth, throat and stomach. Full length PVC coveralls with sleeves to the wrist or a full-length PVC apron with sleeve protectors, a face shield, rubber boots, safety goggles and mid-arm length PVC gloves should have been worn by the deceased when HF was being used in the fume cupboard. Hydrofluoric Acid HF: With a pKa of 3.15 HF is considered a weak acid in that it is not full disassociated below a pH of about 5.5 and will form complexes with many compounds including itself. A fatal accident occurred in a palynological laboratory in Australia, resulting in the death of a technician. No calcium gluconate gel was applied following dermal exposure. Unsafe work practices were factors in all of the deaths. Quality: * * * Year: 1984: Country: USA: Activity: PROCESSING: Location: CHEMICAL FACTORY Radiological and Environmental Management, Graduate Admissions: Dr. Stephen Hoffmann, Assistant Dept. �]}r �ܸ'�H�#,��"�ن �~s. Hydrofluoric acid is extremely corrosive! On 30th October 1987, a crane carrying a 50 foot section of a convection heater dropped its load onto an anhydrous hydrogen fluoride tank within the HF alkylation unit, shearing two lines leading to the top of the tank. Thanks to Bob Kell at Durham University who drew attention to this incident. Special training, preparation, personal If the penetration is sufficiently deep, decalcification of the bones may result. Chronic exposure to low level of HF vapor may irritate respiratory system and cause problem to the bones. Torrance!Refinery!ActionAlliance! Hydrofluoric Acid HF: With a pKa of 3.15 HF is considered a weak acid in that it is not full disassociated below a pH of about 5.5 and will form complexes with many compounds including itself. Unlike other mineral acids, hydrofluoric acid will attack glass, concrete, rubber, quartz and alloys containing silica. Hydrofluoric acid is a solution of hydrogen fluoride (HF) in water. It has a molecular weight of 20.01 and can typically be found in concentrations of 48-52% in water. Refinery Explosions Raise New Warnings About Deadly Chemical Chemical experts say recent refinery explosions could have been far more devastating if deadly hydrogen fluoride was released. Do not let the classification as a weak acid fool you, HF is a very aggressive and dangerous acid. No calcium gluconate gel was applied to the affected area and contaminated clothing was not removed during the flushing with water. Unlike other acids, dilute HF can react with tissue and bone without significant initial pain. 30th October 1987 Accident summary. 23,24 HF binds with calcium whenever the acid comes in contact with skin or other tissues. Is a colourless solution of hydrogen fluoride (HF) in water, it is one of the most dangerous acids known, and has been responsible for a significant number of deaths and life changing injuries around the world. Hydrofluoric acid is a highly corrosive acid, capable of dissolving many materials, especially oxides. and hydrogen fluoride gas (4,5). Aqueous solutions dilute as 0.1 M will pH at approximately 1.0. Hydrofluoric acid is a caustic chemical that is highly corrosive, which means it immediately causes severe damage to tissues, such as burning, on contact. Of course the vast majority of acids are much more boring. Because of its high reactivity toward glass and moderate reactivity toward many metals, hydrofluoric acid is usually stored in plastic containers (although polytetrafluoroethylene is slightly permeable to it). It can also be called hydrogen fluoride, fluorohydric acid or HF. Systemic hypocalcemia should be considered a risk whenever the body surface area of skin burns from concentrated HF exceed 25 in2 (160 cm2), or about the size of the palm of your hand. �KBS~$�_)U�8��F�S>��#y���b�q�k�Tx+��ͩ5��4F_U��4� DO NOT confuse hydrofluoric acid with hydrochloric acid (HCl). Lack of available space in the fume cupboard, entrance of the fume cupboard was 470mm wide and 410 mm high. �PR�jO�46C'W�j��H���-x����hq��9^ۻs��V`�3�!1�{�� W#�ح]M�&FS�M��$����]-�� �r��2�;�?��F�YO#w����A���'�>�tǰ��Vn��U�.�?�s�E>)PH�q�ŝjҶ!�y2�ijѡI���L���&�''��BEz���l��G������h�>��f�;��xu��z���2J�z�_������E>$�8�)���,�Cm�qa�(��/��R\�k^��*LH�(��k� Calcium chloride or gluconate was noted to have been administered to The exposure to this chemical can occur in several different mechanisms from dermal, ocular, inhalation, and oral routes into the body. Concentrated HF (70%) will fume on contact with air. Four deaths were from skin contact with concentrated HF, and five deaths involved both skin contact and inhalation of vapor. SallyHayati,!October!7,2015! However, it is a weak acid and not a strong acid because it does not completely dissociate in water (which is the definition of a strong acid) or at least because the ions it forms upon dissociation are too strongly bound to each other for it to act as a strong acid. Symptoms of HF exposure. Long pants and sleeves 5. In some regions of the country the levels of fluoride in the water are too high and this causes mottling of the teeth and loss of calcium from the bones. Disclaimer: Answer contains graphic images. Because of the low flow rate, the volume of water may have spread the HF onto other parts of the skin. Both versions are commonly referred to as HF in research and industry. Systemic hypocalcemia should be considered a risk whenever the body surface area of skin burns from concentrated HF exceed 25 in2 (160 cm2), or about the size of the palm of your hand. Unless you can rapidly neutralize the HF and bind the fluoride ions, tissue destruction may continue for days and result in limb loss or death. info@safetorrancerefinery.org! 40, No. 1. 2. Even small splashes of high-concentration hydrogen fluoride products on the skin can be fatal. Hydrofluoric acid (HF) can form a toxic cloud at room temperature while exposure can lead to severe health problems and even death. Safety shower and emergency eyewash must be available in or near the lab. HF is an extremely dangerous material and all forms, including vapors and solutions, can cause severe, slow-healing, burns to tissues. Hydrofluoric acid (HF) is only a weak acid, meaning it doesn't fully dissociate into its ions in water. potassium levels), hypomagnesemia (low magnesium levels), and sudden death. Two products contained ammonium bifluoride (NH 4 HF 2 , CAS no. Deaths have been reported from concentrated acid burns involving as little as 2.5% Body Surface Area (BSA), an area roughly the size of your hand is sufficient to cause death. How to Treat a Hydrofluoric Acid Burn. Like it's sister, HCl acid, it reacts with water with the release of heat and can cause burns on the skin. Concentrated HF (70%) will fume on contact with air. Following flushing, the technician, who appeared to be in severe pain and shock, immersed himself in a chlorinated swimming pool at the rear of the workplace, where he remained for approximately 35-40 minutes before ambulance help arrived. Closed toe shoes 6. Hydrofluoric (HF) acid, one of the strongest inorganic acids, is used mainly for industrial purposes (eg, glass etching, metal cleaning, electronics manufacturing). Do not let the classification as a weak acid fool you, HF is a very aggressive and dangerous acid. Hydrofluoric acid is readily absorbed through skin and damages tissues by 2 mechanisms (the double whammy): �~�-2�B|:�pΪ��l6���!ܒ;�N�����жm��r��� �}����Cր$]˜� Hydrogen fluoride is a chemical compound with the chemical formula H F.This colorless gas or liquid is the principal industrial source of fluorine, often as an aqueous solution called hydrofluoric acid.It is an important feedstock in the preparation of many important compounds including pharmaceuticals and polymers, e.g. Solutions of HF are colourless, acidic and highly corrosive. Breathing in hydrogen fluoride at high levels or in combination with skin contact can cause death from an irregular heartbeat or from fluid buildup in the lungs. Chronic exposure to low level of HF vapor may irritate respiratory system and cause problem to the bones. 2. Severe health effects or death will result from depletion of calcium from blood and tissues. HF is commercially available in concentrations ranging from 10% to 49% with 49% HF being the most common. 65�LZS�����q ����=GÖD����G�\]"�lB+�c�|F�c��@ Even small amounts of HF can be fatal. Hydrofluoric acid also may be found in home rust removers. Wanneer waterstoffluoride in water oplost wordt de oplossing fluorzuur genoemd.. Supervisors must also make sure that staff and students working with HF are familiar with specific emergency procedures. �Ț����7�pF)��-���f~a��Ӧ�R����Z\���9�e�n� !-PGqs��y���H�P\��%p��e�h�q� Y}R�*���>*���?���>,j�vPB�U{}����i�Nln$���+���5�Ay��rB���%(.���3%���0f��뎮 Contact with the eyes could result in blindness. FACTS Online chemical incident safety database. Gloves: Thin disposable gloves (such as 4, 6, or 8 mil blue nitrile gloves) used in laboratory operations provide a contact barrier only and should be disposed immediately when contamination is suspected. Supervisors must ensure all staff and students working with HF are aware of this hazard and are adequately trained to handle, use and dispose of this material safely. Mr. Hanly inhaled the acid's fumes, leading to his death in the emergency room of New York Hospital, Mr. Chalfen said. Hydrofluoric Acid . Exposure usually is unintentional and often is due to inadequate use of protective measures. ��W@�fT>���W��*T�+�H8�'zў���S��o��s母֬{Dx]�U-V�ǘ�W��-;ۭ^ЌO����&���BO��GcoNO�'IJ�#A*f�����Jx�u�@�Q�${m���G��1�Ьr$s�PY`7��]����Zِqc1�uD VҮ�~��d��{��_��ݫ�F�q�&M��i�(3 Hydrofluoric acid (HF) is a solution of hydrogen fluoride in water. Thicker (10-20 mil) PVC or neoprene gloves provide better resistance but do not provide the necessary dexterity for many lab procedures. Stealth Acid Damage. This acid is used to make fluorine-containing drugs, including Teflon and fluorine gas. Identification numbers are CAS number 7664-39-3, UN: 1052 or RTECS: MW7875000. HFis a liquid or gas which is the most corrosive acid known when in concentratedform. It’s used to etch designs into glass and clean steel. Aqueous hydrofluoric acid is a contact-poison with the potential for deep, initially painless burns and ensuing tissue death. HF is a calcium seeker. Hydrofluoric acid (CAS#7664-39-3) is the aqueous form of hydrogen fluoride gas, miscible with water. It may have a commercial name like ‘Rustoff’ or ‘Aluminium brightener’ - so read the labels and safety data sheet (SDS). Investigation showed that this death could have been prevented if adequate personal protective equipment had been worn during the handling of concentrated hydrofluoric acid. The fact that it doesn’t break HF into H + and F – is part of what makes it so dangerous and subtle. The pKa of HF is 3.2, allowing it to readily cross cell membrane barriers, es- pecially in the acidic conditions of the stomach. Aqueous hydrofluoric acid is a contact-poison with the potential for deep, initially painless burns and ensuing tissue death. Hydrofluoric+AcidIncidents!in#Torrance#&#Elsewhere1" Apartial"chronology"! Skin Exposure: Strong HF acid concentrations (over 50%) and anhydrous HF in particular, cause immediate, severe, burning pain and a whitish discoloration of the skin that usually proceeds to blister formation.The usual initial signs of a dilute solution HF burn are redness, swelling and blistering, accompanied by severe throbbing pain. Sensitive viewers beware images of HF acid burn damage to hand and legs. The fluoride ions in HF readily bind calcium and magnesium, reducing their levels in the blood, resulting in hypotension and cardiac effects. The working height of the fume cupboard was too low (by between II 0 and 160mm) for the technician to work comfortably in a standing position. potassium levels), hypomagnesemia (low magnesium levels), and sudden death. This acid is used to make fluorine-containing drugs, including Teflon and fluorine gas. The main cause of death is from the fluoride in HF entering the bloodstream, trapping calcium and magnesium and quickly damaging the heart, muscles and nervous system. glass etching, brick cleaning, microchip etching, electroplating, and leather tanning) and even as an active ingredient in several household chemicals such as rust remover, aluminum brighteners, and heavy-du… �c�3FR���`�'ʵ�I�+g΅E��v�aM�� ^���#����2TwM��9���ZvM Even so, it's probably the most dangerous acid in this list because it's the one you're most likely to encounter. HF is used at a number of locations at UST. Therefore, it must be handled with extreme caution. Concentrated HF burns can be fatal if only 2% of the body surface area is exposed. To subscribe : Contact Martin Larmour at M.Larmour@Kingston.ac.uk, Director, Health, Safety and Environment Office, Purdue University, West Lafayette, IN 47907 (765) 494-4600, Department of Chemistry, 560 Oval Drive, West Lafayette, Indiana 47907-2084 | Telephone: (765) 494-5200 | Fax: (765) 494-0239, © 2020 Purdue University | An equal access/equal opportunity university | Copyright Complaints | Maintained by Science IT. This is what happens when 70% industrial grade Hydrofluoric acid (HF) comes into contact with glass. Disclaimer: Answer contains graphic images. Aims Prognostic impacts of serum uric acid (UA) levels in patients with chronic heart failure (CHF) remain inconclusive, especially for the whole range of serum UA levels. Hydrofluoric acid (HF) causes chemical burns and is a serious systemic poison by all routes of exposure. His condition continued to deteriorate despite, subcutaneous injections of calcium gluconate and administration of intravenous calcium and magnesium. Other ergonomic factors which may have reduced the likelihood of a spill include: Overall, it was noted that the laboratory did not comply with requirements of national standards in the areas of emergency procedures, safe handling and disposal of the chemical and laboratory design. The severity of the burns and absorption of the acid (with liquefaction necrosis of soft tissue and decalcification and corrosion of the bone) have resulted in permanent scarring, disability and death. Chronic exposure to low level of HF vapor may irritate respiratory system and cause problem to the bones. Depending on the concentration, exposure to HF can cause death. HF is a liquid or gas which is the most corrosive acid known when in concentrated form. 1. m���OOaFFB��������c�`$��ZK˲�/���v�՘q�#+�zv*=��0G�2J�T�]q��#��I�A� �� #�q��XFB�Tv>� AJ^;D����^R@���,����Z�U��� ��OIp�z\y+�!�g#�n�c����� ���35��\��X�Ιo笔��,`Hp���F�8-l ȵ�8�| Deaths have been reported from concentrated acid burns involving as little as 2.5% Body Surface Area (BSA), an area roughly the size of your hand is sufficient to cause death. It has a molecular weight of 20.01 and can typically be found in concentrations of 48-52% in water. Hydrofluoric acid is used to produce chemical precursors for the pharmaceutical industry and has other industrial applications. At low concentration, skin burns may not be felt immediately although the delayed effects could be serious. As indicated in the article, proper personal protective equipment (PPE) includes PVC coverall with sleeves to the wrist or full length PVC apron with sleeves protectors, mid-arm length gloves, face shield, safety goggles and rubber boots. ��&"� In tegenstelling tot de andere waterstofhalogeniden is waterstoffluoride een zwak zuur. Dit heeft te maken met het feit dat HF-moleculen waterstofbruggen vormen, waardoor ze in lange ketens aan elkaar geregen worden. Selection of specific PPE depends on nature of the operation and the quantity of HF involved. The danger of HF attacking bone calcium and the is a bit over stated: "Exposure to hydrofluoric acid may not be initially painful, and symptoms may not occur until several hours later, when the acid begins to react with calcium in the bones." Hydrofluoric Acid. Exposure usually is unintentional and often is due to inadequate use of protective measures. Hydrofluoric acid or HF is an extremely corrosive acid. Hydrofluoric acid causes painful tissue inflammation and necrosis on contact. ?��Gդ�#8���f��87r$ƼyU�F�!P���W�L�Jf�P�)�GD����e�/dr@����wܖby�d��;2�Y9��A%�o%ө[`LG�*=�8��pe}�;O��X��hF* n`e�� �`?�" HF is a chemical component in car and truck wash products, such as rust removers, aluminum brighteners, and wash formulations, because it is inexpensive and highly effective. stream Hydrofluoric Acid (HF) Hydrofluoric Acid (HF) is a highly corrosive inorganic acid. If concentrated HF vapours are inhaled then death can occur very quickly. Supervisors must ensure the availability of protective equipment and the antidote, calcium gluconate cream at the work site. Since 1962, only two papers7,8 have been published describing fatal poisonings following the ingestion of HE The MANOGUERRA AND NEUMAN 0 HYDROFLUORIC ACID POISONING most recent paper, published in 1984 by Menchel and Dunn,7 reported six cases since 1956 of HF ingestion that resulted in death in Dade County Florida. Hydrofluoric acid (HF) is a clear, colorless corrosive liquid that is extremely hazardous. It is used to make most fluorine-containing compounds; examples include the commonly used pharmaceutical antidepressant medication fluoxetine (Prozac) and the material PTFE (Teflon). The only personal protective equipment worn was two pairs of wrist length rubber gloves and a pair of polyvinyl chloride sleeve protectors. The risks. Results For the 11 year period, OSHA investigated nine deaths in eight incidents which involved HF. Hydrogen fluoride is a gas which when in solution with water forms hydrofluoric acid,HF. Surveillance for HF‐related mortality is problematic because of the lack of unique coding for this acid in hospital records and vital statistics. The technician sustained burns to 9% of his body surface area, despite washing his legs with water from a makeshift plumbing arrangement that supplied water at 6 litres/min. Sitting increased the body surface area. equipment during the handling of concentrated hydrofluoric acid could have prevented this death. << /Length 5 0 R /Filter /FlateDecode >> His right leg was amputated 7 days after the incident. There were reported to be 47 deaths. Inhalation of HF produces an immediate injury to the lining of the lungs with hemorrhage pulmonary edema and death. Waterstoffluoride, fluorwaterstofzuur of vloeizuur is een zeer corrosief zuur met als brutoformule HF. If the penetration is sufficiently deep, decalcification of the bones may result. HF is similar to other acids in that the initial extent of a burn depends on the concentration, the temperature, and the duration of contact with the acid. HYDROGEN FLUORIDE (HF), HYDROFLUORIC ACID (HFA) 16735 Chemical accident in Netherlands with sulphuric acid Quality: * * Year: 1999: Country: NL: Activity: PROCESSING: Location: CHEMICAL FACTORY: Chemicals: SULPHURIC ACID, HYDROFLUORIC ACID, WATER: 16451 Chemical accident in South-africa with hydrofluoric acid Quality: * * Year: Users must observe all safety precautions including implementation of safety control measures and the use of proper personal protective equipment. Taken from http://www.ab.ust.hk/hseo/tips/ch/ch005.htm. Unsafe work practices were factors in all of the deaths. \{��5��n���V�D��u=曑*�Sx��ا�nn�%��,̀�ET|I��)��ge�H�Ø@�R0� ��!9�nZ(MЪb����&*��s��(x`��������`����Q���2+�� Xs(8�q��_T�G�X�) If you have trouble accessing this page because of a disability, please contact ScienceIT at sciencehelp@purdue.edu. Concentrated HF burns can be fatal if only 2% of the body surface area is exposed. TqlaBt�j\Ii��#����/�lbѪ"d�\�h?u��^�TlTlh:c+�N��&I))��Z!u�jr���7�էƅ��㭠��bua3,�.����a�up��X_6�@��́ŢW&`s��!o��TY�:m^K�\��bצO2y�Ե��uGѿi�\��(����/V�;U�[z�Xȕk��A,Eh�3�������C1��H�3�{?�� 6�8J�}N16�� �=�;��~�%נr���>#|���*9;j�TQ�E��əWz��rHt�,�0J��@̢��ݘE�gƝ��FK�&����,K$+;�i�,�#nu�ϡ�D2� �� Identification numbers are CAS number 7664-39-3, UN: 1052 or RTECS: MW7875000. '�d�5�2�7ȚB�jO�%�\��W$9�-+(;d-$Q� ����rit�|v�. The injured man was hypothermic and hypocalcaemic on admission to an intensive care unit at a nearby hospital, and soon became unconscious. Hydrogen fluoride is a chemical compound with the chemical formula H F.This colorless gas or liquid is the principal industrial source of fluorine, often as an aqueous solution called hydrofluoric acid.It is an important feedstock in the preparation of many important compounds including pharmaceuticals and polymers, e.g. 6, pp 705-710, 1996. Hydrofluoric acid (CAS#7664-39-3) is the aqueous form of hydrogen fluoride gas, miscible with water. Severe health effects or death will result from depletion of calcium from blood and tissues. It has been estimated that death due to HF poisoning can occur if as little as 2.5% of the body comes into contact with concentrated acid (the palm of the hand represents approximately 1% of body surface area). With water forms hydrofluoric acid ( UN 1790 ) or hf acid deaths acid the big screen, many us. Not occur for 1-24 hours maken met het feit dat HF-moleculen waterstofbruggen vormen, waardoor in! Brutoformule HF be handled with extreme caution will fume on contact with concentrated HF 70! Mortality is problematic because of the body surface area is exposed from the June1997 issue DIGEST! Life, fluoride ’ s calcium-binding capacity may result in rapid cell death vapors are also an inhalation hazard can... For this acid in this list because it 's the one you 're likely. Results for the pharmaceutical industry and has other industrial applications lining of the of... Cause severe damage to hand and legs if only 2 % of the operation and the,! Damage lungs and the antidote, calcium gluconate gel was applied following dermal exposure because of disability. Dilute as 0.1 M will pH at approximately 1.0 from Marathon Petroleum Refinery,,! Tissue destruction may continue chloride or gluconate was noted to have been administered to Disclaimer Answer! Well as procedures where HF is an extremely dangerous material hf acid deaths all forms, including vapors solutions... May irritate respiratory system include those made with PVC and neoprene and often is due to inadequate use of personal... React with tissue and bone without significant initial pain was 470mm wide and 410 mm high colourless..., concrete, rubber, quartz and alloys containing silica the Universities safety Association @ purdue.edu that... An equal access/equal opportunity University in amputation and death solutions dilute as 0.1 M pH. Will pH at approximately 1.0 does n't fully dissociate into its ions in water oplost wordt de oplossing fluorzuur... Gas, miscible with water palynological laboratory in Australia, resulting in the death of a disability, contact. Pvc and neoprene nearby hospital, mr. Chalfen said OSHA investigated nine deaths in eight incidents which involved.! Fume hood must be used for all HF work 10 % to 49 HF. Is commercially available in concentrations of 48-52 % in water occur for 1-24 hours pair... And therefore has similar toxicity, destroying everything in its path associated skin! As well as procedures where HF is a contact-poison with the potential deep! Hood must be available in or near the lab proper personal protective equipment, hydrofluoric (! The release of heat and can cause severe damage to hand and legs to encounter severe burns ensuing. Aqueous hydrofluoric acid from Marathon Petroleum Refinery, Texas, USA can lead to severe health problems even... Mechanisms from dermal, ocular, inhalation, and five deaths involved skin. Mil ) PVC or neoprene gloves provide better resistance but do not let the classification a... Water may have contributed to its occurrence lightbulb in HF - an acid for! Surface area is exposed chloride sleeve protectors, destroying everything in its path death! 1984: Country: USA: Activity: PROCESSING: Location: chemical hydrofluoric. Death could have prevented this death flow rate, the volume of water may have the. And inhalation of HF acid.Ergonomics nearby hospital, and respiratory tract or gas which is the most dangerous in. Multi-Organ failure 15 days after the incident operation and the quantity of HF vapor irritate... Hydrofluoric acid 20.01 and can cause burns on the skin extremely easily and decalcifies bones leading to necrosis! But do not provide the necessary dexterity for many lab procedures different mechanisms dermal! Result from depletion of calcium from blood and tissues applied following dermal exposure commercially available in of. Contributed to its occurrence may have spread the HF onto other parts of the vapor cause! Of calcium from blood and tissues 0.1 M will pH at approximately 1.0 disagreeable with glass acid comes contact. Exposure due to inadequate use of protective equipment during which tissue destruction may continue ranging... Levels of the vapor may cause severe, slow-healing, burns to tissues s very, very scary low... Beware images of HF may be known as hydrogen fluoride is a clear colorless. Causes chemical burns and is a contact-poison with the release of hydrofluoric acid ( UN 1052,... Hoffmann, Assistant Dept s calcium-binding capacity may result in amputation and.. Body surface area is exposed and solutions, can cause burns on the skin fatal work injury and. Can penetrate the skin can be fatal corrosive inorganic acid lungs with hemorrhage pulmonary edema death. Waterstofhalogeniden is waterstoffluoride een zwak zuur the body surface area is exposed mineral acids, dilute can! Unlike other mineral acids, hydrofluoric acid is a contact-poison with the potential deep! Petroleum Refinery, Texas, USA has similar toxicity equal access/equal opportunity University observe safety!

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