H3O2P
65.996 g/mol
Industrial ChemicalDanger
Acid, Phosphinic
CAS6303-21-5EC228-601-5
Category
Industrial Chemical
Compound Class
Other
Primary Use
Reducing agent and electroplating baths
Hypophosphorous acid, also known as This compound, is a phosphorus oxyacid that functions as a powerful reducing agent. It is a colorless, low-melting solid soluble in water and organic solvents, primarily used in industrial chemical processes.
Reducing agent in chemical reactionsElectroplating baths
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
Controlled substances
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Relevant lists:US DEA List I Chemicals
CAS 6303-21-5
Related Compounds
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chemical reagent for organic synthesis
ReferenceSame Category
Methylene bis(thiocyanate)
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Biocide and wood preservative
ReferenceSame Category
Tetrabromophthalic anhydride
CAS632-79-1
reactive flame retardant
ReferenceSame Category
4-Chloro-2-butanone
CAS6322-49-2
chemical intermediate
Safety Reference
Danger
H290May be corrosive to metals
H314Causes severe skin burns and eye damage
H318Causes serious eye damage
Customs Tariff Classification
The international HS code for Acid, Phosphinic (CAS 6303-21-5) is 2811.19.
HS code (international, 6-digit)
2811.19
EU CN code (8-digit)
2811 19 80
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
phosphinic acid
InChIKey
ACVYVLVWPXVTIT-UHFFFAOYSA-N
SMILES
O[PH2]=O
Synonyms (6)
- Acid, Phosphinic
- Hydroxyphosphine oxide
- Hypophosphorous acid
- Hypophosphorus acid
- Phosphine oxide, hydroxy-
- Phosphinic Acid