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. Sitting increased the body surface area. 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. 2. Of course the vast majority of acids are much more boring. �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 Unlike other mineral acids, hydrofluoric acid will attack glass, concrete, rubber, quartz and alloys containing silica. Hydrofluoric (HF) acid, one of the strongest inorganic acids, is used mainly for industrial purposes (eg, glass etching, metal cleaning, electronics manufacturing). In tegenstelling tot de andere waterstofhalogeniden is waterstoffluoride een zwak zuur. Hydrofluoric acid (CAS#7664-39-3) is the aqueous form of hydrogen fluoride gas, miscible with water. 65�LZS�����q ����=GÖD����G�\]"�lB+�c�|F�c��@ Concentrated HF (70%) will fume on contact with air. Thicker (10-20 mil) PVC or neoprene gloves provide better resistance but do not provide the necessary dexterity for many lab procedures. Disclaimer: Answer contains graphic images. HF is an extremely dangerous material and all forms, including vapors and solutions, can cause severe, slow-healing, burns to tissues. There were reported to be 47 deaths. Hydrofluoric acid (HF) burns are serious, and it's important to seek medical attention immediately after a burn even if you don't feel symptoms. The injured man was hypothermic and hypocalcaemic on admission to an intensive care unit at a nearby hospital, and soon became unconscious. No calcium gluconate gel was applied to the affected area and contaminated clothing was not removed during the flushing with water. 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. It is used to make most fluorine-containing compounds; examples include the commonly used pharmaceutical antidepressant medication fluoxetine (Prozac) and the material PTFE (Teflon). Sensitive viewers beware images of HF acid burn damage to hand and legs. 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. �3���[����we�YB����yF�&�e;Y�|�Bos Safety shower and emergency eyewash must be available in or near the lab. Chronic exposure to low level of HF vapor may irritate respiratory system and cause problem to the bones. Although a weak acid, i.e., it is not strongly disassociated, is used to etch glass. 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. It has a molecular weight of 20.01 and can typically be found in concentrations of 48-52% in water. His condition continued to deteriorate despite, subcutaneous injections of calcium gluconate and administration of intravenous calcium and magnesium. Even small splashes of high-concentration hydrogen fluoride products on the skin can be fatal. Work procedure applies to working directly with HF are familiar with specific emergency procedures 470mm wide and 410 mm...., Assistant Dept very, very scary, many of us think of acids much! 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