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Fire Hazard
<br /> Excerpt from GUIDE 157 [Substances -Toxic and/or Corrosive(Non-Combustible/Water-Sensitive)]:
<br /> Non-combustible, substance itself does not bum but may decompose upon heating to produce corrosive and/or
<br /> toxic fumes.For UN1796,UN1826,UN2031 at high concentrations and for UN2032,these may act as
<br /> oxidizers, also consult GUIDE 140. Vapors may accumulate in confined areas(basement,tanks,hopper/tank
<br /> cars etc.). Substance may react with water(some violently),releasing corrosive and/or toxic gases and runoff.
<br /> Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated or if
<br /> contaminated with water. (ERG, 2012)
<br /> Health Hazard
<br /> Excerpt from GUIDE 157 [Substances -Toxic and/or Corrosive(Non-Combustible/Water-Sensitive)]:
<br /> TOXIC; inhalation, ingestion or contact(skin,eyes)with vapors,dusts or substance may cause severe injury,
<br /> bums or death.Reaction with water or moist air may release toxic,corrosive or flammable gases.Reaction with
<br /> water may generate much heat that will increase the concentration of fumes in the air.Fire will produce
<br /> irritating,corrosive and/or toxic gases.Runoff from fire control or dilution water may be corrosive and/or toxic
<br /> and cause pollution. (ERG, 2012)
<br /> Reactivity Profile
<br /> HYDROFLUORIC ACID attacks glass and any other silica containing material. May react with common
<br /> metals (iron, steel)to generate flammable hydrogen gas if diluted below 65%.Reacts exothermically with
<br /> chemical bases (examples:amines, amides,inorganic-hydroxides). Can initiate polymerization in certain
<br /> alkenes. Reacts with cyanide salts and compounds to release gaseous hydrogen cyanide. May generate
<br /> flammable and/or toxic gases with dithiocarbamates,isocyanates,mercaptans,nitrides,nitriles, sulfides.
<br /> Additional gas-generating reactions may occur with sulfites,nitrites,thiosulfates (to give 142S and S03),
<br /> dithionites (S02), and carbonates. Can catalyze(increase the rate of)chemical reactions.Reacts explosively
<br /> with cyanogen fluoride,methanesulfonic acid or glycerol mixed with nitric acid.Reacts violently with arsenic
<br /> trioxide,phosphorus pentachloride, acetic anhydride, alkali metals,ammonium hydroxide,chlorosulfonic acid,
<br /> ethylenediamine,fluorine,potassium permanganate,oleurn,propylene oxide, vinyl acetate,mercury(II)oxide.
<br /> Emits highly corrosive fumes of hydrogen fluoride gas when heated [Sax, 9th ed., 1996,p. 1839]. Contact with
<br /> many silicon compounds and metal silicides causes violent evolution of gaseous silicon tetrafluoride [Mellor,
<br /> 1956,Vol. 2, suppl. 1,p. 121].
<br /> Mixing in equal molar portions with any of the following substances in a closed container caused the
<br /> temperature and pressure to increase: acetic anhydride,2-aminoethanol, chlorosulfonic acid, aqueous ammonia
<br /> (48.7%),ethylenediamine, ethyleneimine,oleum, aqueous sulfuric acid(48.7% aqueous sodium hydroxide
<br /> (48.7%),propylene oxide, vinyl acetate [NFPA 1991].
<br /> Belongs to the Following Reactive Group(s)
<br /> • Halogenating Agents
<br /> • Acids,Weak
<br /> • Water and Aqueous Solutions
<br /> Potentially Incompatible Absorbents
<br /> Use caution: Liquids with this reactive group classification have been known to react with the absorbents listed
<br /> below.
<br /> e Cellulose-Based Absorbents,
<br /> e Mineral-Based&Clay-Based Absorbents
<br /> http://127.0.0.1:54673/report?key=CH2013 4/15/2015
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