Hypophosphorous acid solution
Hypophosphorous acid solution (CAS 6303-21-5), molecular formula H3PO2, is a high-purity chemical supplied by Tech Serve Solutions for acids & bases applications, to pharmacopoeia specification (USP, BP, EP). Every batch is tested and ships with a Certificate of Analysis; MSDS and technical data sheets are available on request. Tech Serve Solutions has supplied laboratory reagents, fine chemicals and pharmaceutical intermediates worldwide since 1998.
- IUPAC
- Phosphinic acid

| Molecular weight | 66.00 |
|---|---|
| Linear formula | H3PO2 |
| Assay | ~50% (T) |
| Density | 1.206 g/mL at 25 °C |
| Concentration | 50 wt. % in H2O |
| Vapour pressure | <17 mmHg (20 °C) |
| Impurities tested | ≤0.02% total sulfur (as SO4) |

Hazard statements
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Transport (UN / ADR) | UN 3264 8 / PGII |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 34 |
| Safety statements (S) | 26-36/37/39-45 |
| Cation traces | As: ≤0.5 mg/kgBa: ≤50 mg/kgCa: ≤50 mg/kgCd: ≤1 mg/kgCo: ≤1 mg/kgCr: ≤1 mg/kgCu: ≤1 mg/kgFe: ≤10 mg/kgK: ≤10 mg/kgMg: ≤10 mg/kgMn: ≤1 mg/kgNa: ≤2000 mg/kgNi: ≤1 mg/kgPb: ≤1 mg/kgZn: ≤1 mg/kg |
| Anion traces | chloride (Cl-): ≤200 mg/kgphosphate, phosphite (as H3PO4): ≤1% |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Supplied to USP, BP and EP standards. Every batch ships with a Certificate of Analysis (assay, identity, purity); MSDS and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Hypophosphorous acid solution?
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Hypophosphorous acid solution (CAS 6303-21-5), molecular formula H3PO2, is a high-purity chemical supplied by Tech Serve Solutions for acids & bases applications, to USP, BP and EP standards.
What grades of Hypophosphorous acid solution does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Hypophosphorous acid solution in USP, BP, EP and reagent/AR grades. Custom specifications for nutraceutical or specialty pharmaceutical applications are available — contact our technical sales team.
What is the CAS number and molecular formula of Hypophosphorous acid solution?
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Hypophosphorous acid solution has CAS number 6303-21-5 and molecular formula H3PO2. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for Hypophosphorous acid solution?
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Sample quantities are available for technical evaluation; bulk MOQ depends on grade and packaging. In-stock material typically ships in 7–10 working days; custom-spec orders take 3–4 weeks. Tech Serve Solutions ships worldwide with full export documentation.
Do you provide a Certificate of Analysis (CoA) with each shipment?
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Yes. Every batch of Hypophosphorous acid solution ships with a Certificate of Analysis covering assay, identity and purity tests, plus pharmacopoeia conformance where applicable. MSDS and TDS documents are available on request before order placement.
How should Hypophosphorous acid solution be stored?
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Store Hypophosphorous acid solution in its original sealed container in a cool, dry place away from direct sunlight and incompatible materials, in line with the storage guidance on the Safety Data Sheet. Reseal between dispensings.
What is Hypophosphorous acid solution used for?
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Hypophosphorous acid solution is used in acids & bases applications across pharmaceutical, research and industrial settings. Our technical team can advise on suitability for your specific process.
How do I request a quote for Hypophosphorous acid solution?
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Request a quote with your required grade, quantity and destination via https://www.techservesolutions.in/contact or email info@techservesolutions.in. We respond with specifications, a Certificate of Analysis and pricing.
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