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7783-03-1

Name Tungstic acid
CAS 7783-03-1
EINECS(EC#) 231-975-2
Molecular Formula H2O4W
MDL Number MFCD00011336
Molecular Weight 249.85
MOL File 7783-03-1.mol
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Chemical Properties

Appearance light yellow powder
Melting point  100°C (dec.)
Boiling point  1473°C
density  5.5 g/mL at 25 °C(lit.)
refractive index  2.24
Fp  1473°C
storage temp.  Sealed in dry,Room Temperature
solubility  insoluble in H2O, acid solutions; soluble in alkaline solutions
form  powder
color  Yellow to yellow-greenish
Specific Gravity 5.5
Stability: Stable. Incompatible with strong oxidizing agents.
Water Solubility  insoluble
Merck  14,9818
Exposure limits ACGIH: TWA 3 mg/m3
NIOSH: TWA 5 mg/m3; STEL 10 mg/m3
CAS DataBase Reference 7783-03-1(CAS DataBase Reference)
NIST Chemistry Reference Tungstic acid(7783-03-1)
EPA Substance Registry System 7783-03-1(EPA Substance)

Safety Data

Risk Statements 
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S24/25:Avoid contact with skin and eyes .
WGK Germany  3
RTECS  YO7840000
TSCA  Yes
HS Code  28259011

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