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HYPOPHOSPHORUS ACID Extra Pure

Phosphinic acid

EUC Required  
COAs

Packings

500 ml (00500)

2500 ml (02500)

2500 ml (02500)

2GBA000500 2GBAG02500 2GBAH02500
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Article No. 04153 Grade Extra Pure
Purity 30% CAS No. 6303-21-5
Molecular Formula HPH2O2 Molecular Weight 66.00
H.S. Code 2811.1920 Shelf Life 60 Months

Physical Properties

Physical state at 20 °C Liquid Colour Clear Colorless
Odour Odorless pH value 1
Melting point/ Freezing point [°C] -25°C Decomposition point [°C] 108°C
Boiling point [°C] 108°C Vapour pressure [20°C] < 17 mm Hg 20 °C
Vapour pressure mm/Hg < 17 mm Hg 20 °C Density [g/cm3] 1.20 - 1.25
Solubility in water [% weight] Soluble in water

Specifications

Appearance A clear, colourless liquid Assay (alkalimetric) 30 - 32%
Arsenic (As) Max 0.0001% Calcium (Ca) Max 0.005%
Iron (Fe) Max 0.002% Copper (Cu) Max 0.0005%
Sodium (Na) Max 0.05% Heavy metal (as Pb) Max 0.001%
Chloride (Cl) Max 0.02% Sulphate (SO4) Max 0.02%

Safety Information and Hazard Symbols

Corrosion
Symbol: GHS05
 Signal Word: Danger
 UN No.: 3264
 IMCO Class No.: 8
 Packing Group: III
 Hazardous Statement: H314
 Precaution Statement: P280-P305 + P351 + P338-P310
Revision Date: 24-Sep-2026

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