Trimellitic Anhydride CAS 552-30-7
| CAS No. | 552-30-7 |
| Molecular Formula | C9H4O5 |
| Molecular Weight | 192.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Trimellitic Anhydride under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Trimellitic Anhydride (CAS 552-30-7), molecular formula C9H4O5 and molecular weight 192.13 g/mol, is a CATO reference standard with documented purity and traceability.
Trimellitic Anhydride (C9H4O5) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H4O5 |
| Molecular Weight | 192.13 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Trimellitic Standards
Recommended Standards
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- 1-[1-Methyl-3-(trifluoromethyl)-1h-pyrazol-5-yl]ethanone (CAS 1006434-30-5)
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- 3-(Pyridin-3-yl)-5-(trifluoromethyl)benzenamine (CAS 641571-00-8)
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- 6-Chloro-9-vinyl-9H-purine (CAS 15816-12-3)
- 2-[4-methoxy-3-(morpholine-4-sulfonyl)phenyl]acetic acid (CAS 721418-09-3)
- Semaglutide Impurity 130 (CAS 1188328-40-6)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com