Molekula
3,4,5,6-Tetrahydrophthalic 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
3,4,5,6-Tetrahydrophthalic anhydride is a cyclic anhydride used primarily in the synthesis of resins, coatings, and plasticizers, offering improved flexibility and durability. It is also employed in the production of polyesters and alkyd resins for industrial applications. This chemical has a CAS number of 2426-02-0, with a molecular formula of C8H8O3 and a molecular weight of 152.15 g/mol. It should be stored at ambient conditions and handled with caution, as it carries a "Danger" signal word. Molekula supplies 3,4,5,6-Tetrahydrophthalic anhydride from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
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Pricing & pack sizes
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25 g — £58.50 per pack ex VAT · £70.20 inc. VAT
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Specifications
| Property | Value |
|---|---|
| Appearance | Light yellow powder |
| Melting Point | 65-68°C |
| Assay | ⩾ 96.0% |
| Identification (IR) | Conforms to reference |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 16343685 |
| CAS Number | 2426-02-0 |
| IUPAC Name | 4,5,6,7-tetrahydro-2-benzofuran-1,3-dione |
| EC Number | 219-374-3 |
| Molecular Formula | C8H8O3 |
| Molecular Weight | 152.15 |
| Exact Mass | 152.0473 |
| SMILES | C1CCC2=C(C1)C(=O)OC2=O |
| InChIKey | HMMBJOWWRLZEMI-UHFFFAOYSA-N |
| InChI | InChI=1S/C8H8O3/c9-7-5-3-1-2-4-6(5)8(10)11-7/h1-4H2 |
| PubChem CID | 12475 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29172000 |
| Tariff Code | 2917200090 |
Safety & GHS
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Corrosive
GHS05
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Serious Health Hazard
GHS08
Hazard statements
- H317 May cause an allergic skin reaction
- H318 Causes serious eye damage
- H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
- H412 Harmful to aquatic life with long lasting effects
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P342+311 Call a POISON CENTER or doctor
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, 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, 4,5,6,7-tetrahydro-
- 1,3-Isobenzofurandione, 4,5,6,7-tetrahydro-
- 1,3,4,5,6,7-hexahydro-2-benzofuran-1,3-dione
- 3,4,5,6-Tetrahydrophthalic acid anhydride
- 4,5,6,7-Tetrahydro-2-benzofuran-1,3-dione
- 4,5,6,7-tetrahydroisobenzofuran-1,3-dione
- cyclohexene-1,2-dicarboxylic acid anhydride
- Cyclohexene-1,2-dicarboxylic anhydride
- delta-TPA
- HMMBJOWWRLZEMI-UHFFFAOYSA-
Frequently asked questions
What is 3,4,5,6-Tetrahydrophthalic anhydride (CAS 2426-02-0) commonly used for?
It is primarily used as a chemical intermediate in the synthesis of plasticizers, coatings, adhesives, and resins, including polyester and epoxy systems.
What is the molecular formula and molecular weight of 3,4,5,6-Tetrahydrophthalic anhydride?
The molecular formula is **C₈H₈O₃**, and the molecular weight is **152.15 g/mol**.
How should 3,4,5,6-Tetrahydrophthalic anhydride be stored?
Store in a tightly sealed container at **ambient temperature**, away from moisture and incompatible materials.
What grades or purities of 3,4,5,6-Tetrahydrophthalic anhydride does Molekula supply?
Molekula provides **technical-grade** and **high-purity** (98%+) forms; contact us for specific purity requirements.
Can Molekula supply 3,4,5,6-Tetrahydrophthalic anhydride in bulk quantities?
Yes, we offer bulk packaging options (e.g., drums, totes) for large-volume orders—please inquire for availability.
What documentation is provided with an order of 3,4,5,6-Tetrahydrophthalic anhydride?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **batch-specific documentation** upon request.
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