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Hydrofluoric Acid
Hydrofluoric acid is a solution of hydrogen fluoride in water. It is a colorless fuming liquid which can cause painful burns. Hf is one of the strongest inorganic acids, is used mainly for industrial purposes (eg, glass etching, metal cleaning, electronics manufacturing). Hydrofluoric acid also may be found in home rust removers.
CAS NUMBER 7664-39-3
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ITEM |
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Hydrofluoric acid 70% |
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Molecular Weight |
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20.01 ( 1.23 g / cm3 ) |
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Composition |
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H 5.04 % F 94.96% |
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DATE OF SUPPLY |
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21.5.2011. |
SPECIFICATION OF PRODUCT |
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|
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GRADE CP , TECHNICAL |
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70 % |
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MINIMUM ASSAY |
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48.0 % |
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IDENTITY |
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BY IR Spectrum |
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APPEARANCE |
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A CLEAR LIQUID WITH AN ACRID VAPOUR . |
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CARBONISABLE SUBSTANCES |
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PASSES THE TEST |
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COLOUR, MAX |
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10 HU |
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NON VOLATILE MATTER |
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0.0005% |
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CHLORIDE CONTENT, PPM, MAX |
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0.0001 ppm |
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ORGANIC IMPURITIES |
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Passes test |
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SULPHUR TOTAL AS SULPHATES, PPM, MAX |
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0.002 ppm |
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PHASE |
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LIQUID |
Also complies with BS 6376 : PART 2 : 1984 ( ISO 6353 /2-1983 )
HAZARD : Toxic by inhalation , corrosive to skin and mucous membranes .
TLV : Ceiling 3 ppm.
Severe burns occur after exposure of concentrated (ie, 50% or stronger solution) hydrofluoric acid to 1% or more body surface area (BSA), exposure to hydrofluoric acid of any concentration to 5%