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Hydrofluoric Acid

Hydrofluoric Acid (21790)

40%, MOS

General Information

  • CAS Number
    • 7664-39-3

Physical Properties

  • Physical Form
    • Liquid
  • Boiling Point/Range
    • 110 °C (1,013 hPa)
  • Flashpoint
    • Not applicable
  • Color
    • Colorless
  • Odor
    • Stinging
  • Melting Point/Range
    • -40 °C
  • pH
    • Acidic
  • Vapor Pressure
    • 75 hPa (50 °C)

Safety Information

  • Incompatible Materials
    • Glass and silicate-containing materials are attacked, Gives off hydrogen by reaction with metals, Incompatible with bases
  • Ignition Temperature
    • Not applicable
  • Corrosivity
    • Corrosive to metals
  • Thermal Decomposition
    • Fire or intense heat may cause violent rupture of packages.

International Transportation

  • Sub Class 1
    • 6.1
  • Harmonized System Code
    • 28111100
  • Chemical Class
    • 8
  • Packing Group
    • II
  • UN Number
    • 1790

General Information

  • CAS Number
    • 7664-39-3

Physical Properties

  • Physical Form
    • Liquid
  • Boiling Point/Range
    • 110 °C (1,013 hPa)
  • Flashpoint
    • Not applicable
  • Color
    • Colorless
  • Odor
    • Stinging
  • Melting Point/Range
    • -40 °C
  • pH
    • Acidic
  • Vapor Pressure
    • 75 hPa (50 °C)

Safety Information

  • Incompatible Materials
    • Glass and silicate-containing materials are attacked, Gives off hydrogen by reaction with metals, Incompatible with bases
  • Ignition Temperature
    • Not applicable
  • Corrosivity
    • Corrosive to metals
  • Thermal Decomposition
    • Fire or intense heat may cause violent rupture of packages.

International Transportation

  • Sub Class 1
    • 6.1
  • Harmonized System Code
    • 28111100
  • Chemical Class
    • 8
  • Packing Group
    • II
  • UN Number
    • 1790
  • CAS Number : 7664-39-3
  • Physical Form : Liquid
  • Boiling Point/Range : 110 °C (1,013 hPa)
  • Flashpoint : Not applicable
  • Color : Colorless
  • Odor : Stinging
  • Melting Point/Range : -40 °C
  • pH : Acidic
  • Vapor Pressure : 75 hPa (50 °C)
  • Incompatible Materials : Glass and silicate-containing materials are attacked, Gives off hydrogen by reaction with metals, Incompatible with bases
  • Ignition Temperature : Not applicable
  • Corrosivity : Corrosive to metals
  • Thermal Decomposition : Fire or intense heat may cause violent rupture of packages.
  • Sub Class 1 : 6.1
  • Harmonized System Code : 28111100
  • Chemical Class : 8
  • Packing Group : II
  • UN Number : 1790
Property
Value
assay
39.0 - 41.0 %
residue on ignition (SO4)
Max. 5.0 ppm
silver (Ag)
Max. 0.02 ppm
aluminium (Al)
Max. 0.05 ppm
arsenic, antimony (as As)
Max. 0.06 ppm
gold (Au)
Max. 0.02 ppm
boron (B)
Max. 0.05 ppm
barium (Ba)
Max. 0.10 ppm
beryllium (Be)
Max. 0.01 ppm
bismuth (Bi)
Max. 0.02 ppm
calcium (Ca)
Max. 0.50 ppm
cadmium (Cd)
Max. 0.01 ppm
cobalt (Co)
Max. 0.01 ppm
chromium (Cr)
Max. 0.01 ppm
copper (Cu)
Max. 0.01 ppm
iron (Fe)
Max. 0.10 ppm
gallium (Ga)
Max. 0.02 ppm
indium (In)
Max. 0.02 ppm
potassium (K)
Max. 0.10 ppm
lithium (Li)
Max. 0.02 ppm
magnesium (Mg)
Max. 0.10 ppm
manganese (Mn)
Max. 0.01 ppm
molybdenum (Mo)
Max. 0.01 ppm
sodium (Na)
Max. 0.20 ppm
nickel (Ni)
Max. 0.01 ppm
lead (Pb)
Max. 0.02 ppm
platinum (Pt)
Max. 0.02 ppm
tin (Sn)
Max. 0.02 ppm
strontium (Sr)
Max. 0.02 ppm
titanium (Ti)
Max. 0.10 ppm
thallium (Tl)
Max. 0.02 ppm
vanadium (V)
Max. 0.01 ppm
zinc (Zn)
Max. 0.05 ppm
zirconium (Zr)
Max. 0.01 ppm
chloride (Cl)
Max. 5.0 ppm
hexafluorosilic acid(H2SiF6)
Max. 50.0 ppm
nitrate (NO3)
Max. 3.0 ppm
phosphate (PO4)
Max. 0.5 ppm
sulfate (SO4)
Max. 1.0 ppm
sulfite (SO3)
Max. 2.0 ppm