Phosphorous Acid

Product Name: Phosphorous Acid

CAS Number: 13598-36-2

Molecular Formulae: H₃PO₃

Synonyms: Phosphonic Acid

Physical Properties

Molar Mass: 82

Appearance: White Crystals, deliquescent

Density: 1.651

Boiling Point: 200 ^oC (decomposes)

Solubility in Water: Soluble

Assay: ≥ 99%

Origin

Country of Origin: China

Supplier Reference Number: 8

Hazard Classification

International Maritime Organisation (IMO): UN2834 Class 8 Group 3

Road Transport (ADR): UN2834 Class 8 Group 3

Risk Phrases: R22, R35

Hazard Phrases: S26, S36, S37, S39, S45

Impurity Profile

Phosphate: ≤ 0.1%

Sulphate: ≤ 0.006%

Total Fe: ≤ 0.003%

Chloride: ≤ 0.01%

Total heavy metals: ≤ 0.001%