Sulfur trioxide
Sulfur trioxide (CAS 7446-11-9), molecular formula SO3, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis 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
- Sulfuric anhydride
| Molecular weight | 80.06 |
|---|---|
| Linear formula | SO3 |
| Assay | ≥99% |
| Boiling point | 44.7 °C(lit.) |
| Density | 1.97 g/mL at 25 °C(lit.) |
| Vapour pressure | 280 mmHg (25 °C) |
| Vapour density | 2.8 (vs air) |
| Melting point | 16.8 °C(lit.) |
| Contains / stabiliser | stabilizer |
Hazard statements
- H314Causes severe skin burns and eye damage
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- 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) |
|---|---|
| Transport (UN / ADR) | UN 1829 8/PG 1 |
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | C |
| Risk statements (R) | 14-35-37 |
| Safety statements (S) | 26-30-36/37/39-45 |
| Supplemental hazards | Reacts violently with water. |
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 Sulfur trioxide?
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Sulfur trioxide (CAS 7446-11-9), molecular formula SO3, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to USP, BP and EP standards.
What grades of Sulfur trioxide does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Sulfur trioxide 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 Sulfur trioxide?
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Sulfur trioxide has CAS number 7446-11-9 and molecular formula SO3. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for Sulfur trioxide?
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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 Sulfur trioxide 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 Sulfur trioxide be stored?
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Store Sulfur trioxide 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 Sulfur trioxide used for?
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Sulfur trioxide is used in chemical synthesis 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 Sulfur trioxide?
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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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