Hypophosphorous acid solution
SIGALD/214906 - 50 wt. % in H2O
Synonym: Phosphinic acid
CAS Number: 6303-21-5
Empirical Formula (Hill Notation): H3O2P
Molecular Weight: 66.00
MDL Number: MFCD02183592
Linear Formula: H3PO2
Product Type: Chemical
| concentration | 48-52% in NaOH (titration) |
| 50 wt. % in H2O | |
| density | 1.206 g/mL at 25 °C |
| form | liquid |
| InChI | 1S/H3O2P/c1-3-2/h3H2,(H,1 |
| InChI key | ACVYVLVWPXVTIT-UHFFFAOYSA |
| pH | 1 (20 °C, 500 g/L) |
| Quality Level | 200 ![]() |
| SMILES string | O[PH2]=O |
| vapor pressure | <17 mmHg ( 20 °C) |
| Application: |
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| General description: | H3PO2, a monobasic oxyacid, is also referred to as phosphinic acid. H3PO2 participates as a reducing agent for the conversion of aromatic and aliphatic diselenides to the corresponding selenols. It undergoes oxidation in the presence of Ce(IV) and a strong acid to afford cerium(IV) hypophosphite complex ions. |
| Packaging: | 100, 500 g in poly bottle |
| Packaging: | 4, 4×4 kg in poly bottle |
| Symbol | GHS05 |
| Signal word | Danger |
| Hazard statements | H290 - H314 |
| Precautionary statements | P234 - P280 - P301 + P330 + P331 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 |
| Hazard Codes | C |
| Risk Statements | 34 |
| Safety Statements | 26-36/37/39-45 |
| RIDADR | UN 3264 8 / PGII |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Density | 1.206 g/mL at 25 °C |
| UNSPSC | 12352106 |


