Molekula
Trimellitic anhydride
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Trimellitic anhydride is an organic compound widely used in the production of polyesters, alkyd resins, and epoxy curing agents, as well as a key intermediate in the synthesis of plasticizers, coatings, and adhesives. It appears as a white crystalline solid with a pungent odor. This chemical has a CAS number of 552-30-7, a molecular formula of C9H4O5, and a molecular weight of 192.13. It is stored at ambient conditions but requires careful handling due to its hazardous nature, marked by a signal word of "Danger." Molekula supplies Trimellitic anhydride from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Specifications
| Property | Value |
|---|---|
| Appearance | White flakes |
| Melting Point | >164 Deg C |
| Identification | Conforms to reference |
| Assay | >98% |
| Acid | >873mgKOH/g |
| Chroma | <120 |
| Pa | <300ppm |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Crystals |
| Melting Point | 161-163.5 °C |
| Boiling Point | 390 °C |
| Vapour Pressure | 0.000004 mmHg |
Source: PubChem CID 11089 (HSDB, ICSC, The National Institute for Occupational Safety and Health (NIOSH))
Identification
| Property | Value |
|---|---|
| SKU | 18657603 |
| CAS Number | 552-30-7 |
| IUPAC Name | 1,3-dioxo-2-benzofuran-5-carboxylic acid |
| EC Number | 209-008-0 |
| Molecular Formula | C9H4O5 |
| Molecular Weight | 192.13 |
| Exact Mass | 192.0059 |
| SMILES | C1=CC2=C(C=C1C(=O)O)C(=O)OC2=O |
| InChIKey | SRPWOOOHEPICQU-UHFFFAOYSA-N |
| InChI | InChI=1S/C9H4O5/c10-7(11)4-1-2-5-6(3-4)9(13)14-8(5)12/h1-3H,(H,10,11) |
| PubChem CID | 11089 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29173930 |
| Tariff Code | 2917398590 |
Safety & GHS
-
Corrosive
GHS05
-
Health Hazard
GHS07
-
Serious Health Hazard
GHS08
Hazard statements
- H303 May be harmful if swallowed
- H317 May cause an allergic skin reaction
- H318 Causes serious eye damage
- H332 Harmful if inhaled
- H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P284 Wear respiratory protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 1,2,4-Benzenetricarboxylic anhydride
- 1,3-Dihydro-1,3-dioxo-5-isobenzofurancarboxylic acid
- 1,3-Dioxo-5-phthalancarboxylic acid
- 4-Carboxyphthalic anhydride
- Anhydrotrimellitic acid
- TMAN
- Trimellic acid 1,2-anhydride
- Trimellic acid anhydride
- Trimellitic acid 1,2-anhydride
- Trimellitic acid anhydride
Frequently asked questions
What is trimellitic anhydride (CAS 552-30-7) commonly used for?
Trimellitic anhydride is primarily used in the production of polyesters, alkyd resins, and epoxy curing agents, as well as in the manufacture of plasticizers, coatings, and adhesives.
What is the molecular formula and molecular weight of trimellitic anhydride?
The molecular formula is **C9H4O5**, and the molecular weight is **192.13 g/mol**.
How should trimellitic anhydride be stored?
Store in a cool, dry, well-ventilated area at **ambient temperature**, away from moisture and incompatible substances. Keep containers tightly sealed.
What grades or purity levels of trimellitic anhydride does Molekula supply?
Molekula supplies **technical-grade trimellitic anhydride** with purity typically ≥99%. Custom grades may be available upon request.
Can Molekula supply trimellitic anhydride in bulk quantities?
Yes, we offer trimellitic anhydride in **bulk (drums, totes, or bulk bags)** depending on order volume and logistics requirements.
What documentation is provided with a trimellitic anhydride order?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS/SDS), and a packing list. Additional documentation, such as a technical data sheet, may be provided upon request.
Ready to order or need a custom pack?
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