MATERIAL PROFILE / Individual substance

Tetrahydrophthalic anhydride

CAS: 85-43-8

Function: Polyester building-block research ingredient

Awaiting human verification

This material’s published information has not yet been verified by a human reviewer.

Human verification concerns the stated information and scope. It is separate from an EcoSafe score, certification or safety approval.

Overview

Individual chemical identity in the common-material baseline. Chemical identity only; purity, grade and supplier composition require separate documentation. Category placement is an editorial research grouping, not a suitability recommendation. Monomers, precursors and curing ingredients are not finished resins or ready-to-use coatings.

Chemistry: Tetrahydrophthalic anhydride

Listed supplier: Supplier not selected · substance baseline

Chemical identity

Molecular formula: C8H8O3
Molecular weight: 152.15 g/mol (identity reference)
IUPAC name: 3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione
PubChem CID: 6810

Chemical identity only; purity, grade and supplier composition require separate documentation.

Identity snapshot: 2026-11-02 UTC.

CAS identity reference ↗

Core data coverage: 43.75%

7 of 16 defined fields are recorded with a source. This measures structured information currently on this site, not the completeness of every linked PDF. Missing fields remain in the denominator.

Coverage is separate from scientific accuracy, human verification and EcoSafe assessment. Molecular fields may not apply to a grade or family; they are not filled from another material to increase its score.

See the 16 fields and remaining gaps

Core field	Recorded information
Chemical name	Tetrahydrophthalic anhydride Source ↗
CAS number	85-43-8 Source ↗
Synonyms	Not yet recorded / may not apply
Molecular formula	C8H8O3 Source ↗
Molecular weight	152.15 Source ↗
IUPAC name	3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione Source ↗
PubChem CID	6810 Source ↗
Identity sources	https://pubchem.ncbi.nlm.nih.gov/compound/6810 Source ↗ Source reference recorded for this record's scope; source freshness is a separate review.
Uses	Not yet recorded / may not apply
Hazards	Not yet recorded / may not apply
Appearance	Not yet recorded / may not apply
Density	Not yet recorded / may not apply
Melting point	Not yet recorded / may not apply
Boiling point	Not yet recorded / may not apply
Solubility	Not yet recorded / may not apply
SDS/TDS	Not yet recorded / may not apply

How the 16-field coverage score works →

Documents & supplier information

Archived copies are dated references. Confirm the latest document for your supplier, grade and region.

An exact-grade regional SDS has not yet been archived for this material.

Supplier and range references

Original supplier / material reference ↗

Find this material in the Document Library →

Suppliers & makers

Confirm grade, composition, current availability and production location directly with the supplier.

No material-specific supplier match has been added yet.

Related supplier-family research

Galstaff Multiresine · Polyester resin building blocks

A family research lead, not a confirmed supplier of this exact substance.

Family reference ↗

Documents, origin & assessment

Supplier documents: See Documents & supplier information above for linked references and gaps.
Manufacturing origin: Not verified
EcoSafe assessment: Not assessed · no numerical points or certification

Identity data and category placement do not establish safety, suitability or environmental performance. Obtain current grade-specific documentation.

Industries & categories

Industrial Chemicals
Base Chemicals & Intermediates · Organic Intermediates

Coatings
Polyester Coatings

Plastics & Rubber Polymers
Thermosets · Polymer Additives & Processing Aids

Sources

Original material source ↗

Library source check: November 2, 2026. Sources may require supplier access.