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Chemical Identification/RIDS
<br />TOXIC; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance may cause severe injury, burns, or death. Reaction
<br />with water or moist air will release toxic, corrosive or flammable gases. Reaction with water may generate much heat which will increase
<br />the concentration of fumes in the air. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water ma,
<br />be corrosive and/or toxic and cause pollution. (DOT, 2000)
<br />Properties
<br />Auto Igtn Temp: Not flammable (USCG, 1999)
<br />Melting Point: -118° F (NIOSH, 2003)
<br />Vapor Pressure: 783 mm Hg (NIOSH, 2003)
<br />Boiling Point: 152° F at 760 mm Hg (USCG, 1999)
<br />Molecular Weight: 20 (NIOSH, 2003)
<br />IDLH: 30 ppm (NIOSH, 2003)
<br />TLV STEL: 3 ppm Ceiling limit. (ACGIH, 2003)
<br />ERPG1: 2 ppm (AIHA, 2003)
<br />ERPG2: 20 ppm (AIHA, 2003)
<br />ERPG3: 50 ppm (AIHA, 2003)
<br />Water Solubility: Miscible (NIOSH, 20'03)
<br />Specific Gravity: 1.15 (©AAR, 2003)
<br />First Aid
<br />Eye: If this chemical in liquid form or in solution contacts the eyes, immediately wash the eyes with large amounts of water, occasionally
<br />lifting the lower and upper lids. Get medical attention immediately. Contact lenses should not be worn when working with this chemical.
<br />Skin: If this chemical in solution or in liquid form contacts the skin, immediately flush the contaminated skin with water. If this chemical
<br />penetrates the clothing, immediately remove the clothing and flush the skin with water. Get medical attention promptly.
<br />Breathing: If a person breathes large amounts of this chemical, move the exposed person to fresh air at once. If breathing has stopped,
<br />perform mouth-to-mouth resuscitation. Keep the affected person warm and at rest. Get medical attention as soon as possible.
<br />Swallow: If this chemical in solution has been swallowed, get medical attention immediately. (NIOSH, 1997)
<br />Reactivity
<br />AIR AND WATER REACTIONS:
<br />Fumes in air. Fumes are highly irritating, corrosive, and poisonous. Generates much heat on dissolution [Merck, 11th ed., 1989]. Heat can
<br />cause spattering, fuming, etc.
<br />CHEMICAL PROFILE:
<br />HYDROFLUORIC ACID attacks glass and any other silica containing material. May react with common metals (iron, steel) to generate
<br />flammable hydrogen gas if diluted below 65%. Reacts exothermically with chemical bases (examples: amines, amides, inorganic
<br />hydroxides). Can initiate polymerization in certain alkenes. Reacts with cyanide salts and compounds to release gaseous hydrogen
<br />cyanide. May generate flammable and/or toxic gases with dithiocarbamates, isocyanates, mercaptans, nitrides, nitriles, sulfides. Addition
<br />gas -generating reactions may occur with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), and carbonates. Can
<br />catalyze (increase the rate of) chemical reactions. Reacts explosively with cyanogen fluoride, methanesulfonic acid or glycerol mixed with
<br />nitric acid. Reacts violently with arsenic trioxide, phosphorus pentachloride, acetic anhydride, alkali metals, ammonium hydroxide,
<br />chlorosulfonic acid, ethylenediamine, fluorine, potassium permanganate, oleum, propylene oxide, vinyl acetate, mercury([[) oxide. Emits
<br />highly corrosive fumes of hydrogen fluoride gas when heated [Sax, 9th ed., 1996, p. 1839]. Contact with many silicon compounds and
<br />metal silicides causes violent evolution of gaseous silicon tetrafluoride [Mellor, 1956, Vol. 2, suppl. 1, p. 1211.
<br />Mixing in equal molar portions with any of the following substances in a closed container caused the temperature and pressure to increasE
<br />acetic anhydride, 2-aminoethanol, chlorosulfonic acid, aqueous ammonia (48.7%), ethylenediamine, ethyleneimine, oleum, aqueous
<br />sulfuric acid (48.7%), aqueous sodium hydroxide (48.7%), propylene oxide, vinyl acetate [NFPA 19911.
<br />REACTIVE GROUPS:
<br />Acids, Inorganic Non -oxidizing (REACTIVITY, 2003)
<br />Reactive Hazards
<br />Water -Reactive, Air -Reactive
<br />6/12/2007 Printed from CAMEO Page 2
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