Phosphoric acid
Phosphoric acid (CAS 7664-38-2), molecular formula H3PO4, 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
- Orthophosphoric acid

| Molecular weight | 98.00 |
|---|---|
| Linear formula | H3PO4 |
| Assay | ≥85.0% |
| Grade | ACS reagent |
| Colour | APHA: ≤10 |
| Boiling point | 158 °C(lit.) |
| Density | 1.685 g/mL at 25 °C(lit.) |
| Melting point | ~40 °C(lit.) |
| Solubility | H2O: soluble |
| Concentration | ≥85 wt. % in H2O |
| Vapour pressure | 2.2 mmHg (20 °C)5 mmHg (25 °C) |
| Vapour density | 3.4 (vs air) |
| Impurities tested | reducing substances, passes test≤0.001% volatile acids (as CH3COOH) |
| Suitability | corresponds to standard for RP gradient testcorresponds to standard for filter test |

Hazard statements
- H290May be corrosive to metals
- 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
| Protective equipment | Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Transport (UN / ADR) | UN 1805 8 / PGIII |
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | C |
| Risk statements (R) | 34 |
| Safety statements (S) | 26-45 |
| Cation traces | As: ≤1 ppmCa: ≤0.002%Fe: ≤0.003%K: ≤0.005%Mg: ≤0.02%Mn: ≤0.5 ppmNa: ≤0.025%Sb: ≤0.002%heavy metals (as Pb): ≤0.001% |
| Anion traces | chloride (Cl-): ≤3 ppmnitrate (NO3-): ≤5 ppmsulfate (SO42-): ≤0.003% |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Gene Information | human ... SRC(6714) |
|---|---|
| Shelf Life | (limited shelf life, expiry date on the label) |
| Uv Absorption | λ: 210 nm Amax: 0.05λ: 220 nm Amax: 0.04λ: 230 nm Amax: 0.03λ: 240 nm Amax: 0.02λ: 500 nm Amax: 0.02 |
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 Phosphoric acid?
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Phosphoric acid (CAS 7664-38-2), molecular formula H3PO4, is a high-purity chemical supplied by Tech Serve Solutions for acids & bases applications, to USP, BP and EP standards.
What grades of Phosphoric acid does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Phosphoric acid 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 Phosphoric acid?
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Phosphoric acid has CAS number 7664-38-2 and molecular formula H3PO4. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for Phosphoric acid?
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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 Phosphoric acid 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 Phosphoric acid be stored?
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Store Phosphoric acid 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 Phosphoric acid used for?
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Phosphoric acid 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 Phosphoric acid?
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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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