Netica Solution

Arsenic acid

IUPAC name
Arsenic acid, arsoric acid
Other names
Arsenic acid
orthoarsenic acid
desiccant L-10
zotox
Identifiers
CAS number
RTECS number
CG0700000
Properties
Molecular formula
H3AsO4 (Solution Only)
H3AsO4·1⁄2H2O (Stable Form)
Molar mass
141.9429 g/mol
Appearance
White translucent crystals,
hygroscopic.
Density
 ? g/cm3, solid
Melting point
35.5 °C (308.65 K)
Boiling point
decom ≥ 100 °C
Solubility in water
16.7 g/100 mL
Acidity (pKa)
2.19, 6.94, 11.5
Structure
Molecular shape
Tetrahedral
Hazards
Main hazards
Toxic.
R-phrases
R26, R27, R28, R45.
S-phrases
S53, S45, S60, S61.
Flash point
Non-flammable.
Related compounds
Other anions
Phosphoric acid
Other cations
Sodium arsenate
Related compounds
Arsenous acid
Arsenic pentoxide
Except [...]