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Monomers & Crosslinking AgentsAvailable on request

Tetrahydrophthalic anhydride, 95%

Synonyms: 1,2,3,6-Tetrahydrophthalic anhydride · 4-Cyclohexene-1,2-dicarboxylic anhydride · Rikacid TH · Tetrahydrophthalic acid anhydride

CAS No.85-43-8
FormulaC8H8O3
Mol. weight152.15
Catalogue No.VQ-019053
Purity95%
HSN29172000

Tetrahydrophthalic anhydride (CAS 85-43-8) – monomer, 95%. C8H8O3, MW 152.15. Get a quote from Vaqora Chemicals, COA included, shipped worldwide.

Pack sizesPrice on quotation · bulk available
250 g
500 g
5 kg
25 kg
Bulk / custom pack · kg to MT
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Batch COA with every lot
16-section GHS SDS
Export to 120+ countries
DG-compliant packing

About Tetrahydrophthalic anhydride, 95%

Tetrahydrophthalic anhydride is a monomer carrying the CAS registry number 85-43-8, specified at 95% purity. With the molecular formula C8H8O3, it has a molar mass of 152.15 g/mol. Systematically, it is named 3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione. Common synonyms include 1,2,3,6-Tetrahydrophthalic anhydride and 4-Cyclohexene-1,2-dicarboxylic anhydride.

It is supplied as white to beige to red beige powder to flakes. Key physical data: a density of 1.36 g/cm3 at 20 °C. Keep the container tightly sealed and store it in a cool, dry area. It carries the GHS signal word “Danger” with 4 hazard statements. Review the Safety Data Sheet before use.

Key uses span polymerisation, crosslinking and curing and adhesives and coatings. Buyers come mainly from polymers and plastics and paints and coatings.

Standard pack sizes are 250 g, 500 g, 5 kg and 25 kg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

  • Polymerisation
  • Crosslinking & curing
  • Adhesives & coatings

Industries

Specifications & identifiers

Chemical identifiers
Product nameTetrahydrophthalic anhydride, 95%
Catalogue No.VQ-019053
CAS Number85-43-8
IUPAC name3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione
Molecular formulaC8H8O3
Molecular weight152.15 g/mol
Exact mass152.0473
Purity / assay95%
HSN code29172000
InChIKeyKMOUUZVZFBCRAM-UHFFFAOYSA-N
SMILESC1C=CCC2C1C(=O)OC2=O
PubChem CID6810
Physical properties
Physical formFlakes
AppearanceWhite to beige to red beige powder to flakes
Density1.36 g/cm3 at 20 °C
LogP (XLogP3)0.8
H-bond donors / acceptors0 / 3
TPSA43.4 Ų
Synonyms1,2,3,6-Tetrahydrophthalic anhydride, 4-Cyclohexene-1,2-dicarboxylic anhydride, Rikacid TH, Tetrahydrophthalic acid anhydride, Memtetrahydro phtalic anhydride, 4-Cyclohexene-1,2-dicarboxylic acid anhydride, 1,3-Isobenzofurandione, 3a,4,7,7a-tetrahydro-, Anhydrid kyseliny tetrahydroftalove, 1,2,3,6-Tetrahydrophthalic acid anhydride, 1,3-Isobenzofurandione, tetrahydro-, Phthalic anhydride, 1,2,3,6-tetrahydro-, 1,3,3a,4,7,7a-hexahydro-2-benzofuran-1,3-dione

Safety & hazard information (GHS)

GHS05 Corrosive
Corrosive
GHS08 Health hazard
Health hazard

Signal word: Danger

Hazard statements

  • H317May cause an allergic skin reaction
  • H318Causes serious eye damage
  • H334May cause allergy or asthma symptoms or breathing difficulties if inhaled
  • H412Harmful to aquatic life with long lasting effects

Precautionary statements: P233, P260, P261, P264 + P265, P271, P272, P273, P280, P284, P302 + P352, P304 + P340, P305 + P354 + P338, P317, P321, P333 + P317, P342 + P316, P362 + P364, P403, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Frequently asked questions

What is the CAS number of Tetrahydrophthalic anhydride, 95%?

The CAS Registry Number of Tetrahydrophthalic anhydride, 95% is 85-43-8. It is also known as 1,2,3,6-Tetrahydrophthalic anhydride, 4-Cyclohexene-1,2-dicarboxylic anhydride, Rikacid TH.

What is the molecular formula and molecular weight of Tetrahydrophthalic anhydride, 95%?

Tetrahydrophthalic anhydride, 95% has the molecular formula C8H8O3 and a molecular weight of 152.15 g/mol. Its IUPAC name is 3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione.

Which grade and pack sizes of Tetrahydrophthalic anhydride, 95% can I order?

We supply Tetrahydrophthalic anhydride, 95% in (95%) grade, in 250 g, 500 g, 5 kg, 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Tetrahydrophthalic anhydride, 95%?

Yes. Every lot of Tetrahydrophthalic anhydride, 95% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Tetrahydrophthalic anhydride, 95% be shipped internationally?

Yes. Tetrahydrophthalic anhydride, 95% is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.

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Why buyers choose Vaqora

  • Batch-traceable lots with COA
  • R&D packs to multi-tonne supply
  • IATA / IMDG dangerous-goods packing
  • EXW, FOB, CIF, DAP Incoterms
  • Custom synthesis & sourcing
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