Safety Reference
Danger
H290May be corrosive to metals
H314Causes severe skin burns and eye damage
H318Causes serious eye damage
Regulatory Compliance2
Controlled substances
Substances on this list are tightly controlled under chemical-weapons or precursor regulations. ChemAbout does not facilitate their procurement; this page is a compliance reference only.
CAS 6303-21-5
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.
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.
The international HS code for Acid, Phosphinic (CAS 6303-21-5) is 2811.19.
2811.19
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.
phosphinic acid
ACVYVLVWPXVTIT-UHFFFAOYSA-N
O[PH2]=O