ChemAbout
© 2026 ChemAbout
Insights|Privacy Policy|Terms of Service|[email protected]
Home/Compounds/Industrial Chemical/4,4'-carbonyldiphthalic anhydride
C17H6O7
322.22 g/mol
Industrial ChemicalWarning

3,3',4,4'-Benzophenonetetracarboxylic dianhydride

CAS2421-28-5EC219-348-1
Category
Industrial Chemical
Compound Class
Ester
Primary Use
curing agent for epoxy resins

3,3',4,4'-Benzophenonetetracarboxylic dianhydride (BTDA) is an aromatic organic acid dianhydride. It is primarily used as a curing agent for epoxy resins in industrial applications.

curing agent for epoxy resins

Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.

Sourcing or supplying this compound?

List your inventory or post a purchase request

CAS 2421-28-5

List This Product
Sign in to publish supply information
Request This Product
Submit a request without registering

Related Compounds

SimilarStructure SimilarSimilarity 0.74

Trimellitic anhydride

CAS552-30-7

curing agent for epoxy resins

ApplicationSame Use

Glutaric anhydride

CAS108-55-4

curing agent for epoxy resins

ApplicationSame Use

Hexahydrophthalic anhydride

CAS85-42-7

curing agent for epoxy resins

ApplicationSame Use

Dimethyl thio-toluene diamine

CAS106264-79-3

curing agent for epoxy resins

ApplicationSame Use

3-dimethylaminopropylamine

CAS109-55-7

curing agent for epoxy resins

ReferenceSame Category

Triphenylmethane-4,4',4''-triisocyanate

CAS2422-91-5

polyurethane crosslinking agent

ReferenceSame Category

1,5-dibromo-2,4-dinitrobenzene

CAS24239-82-5

Chemical intermediate for synthesis

ReferenceSame Category

Myristyl chloride

CAS2425-54-9

Chemical intermediate for surfactants and lubricants

Safety Reference

Harmful
Harmful
Warning
H319Causes serious eye irritation
H335May cause respiratory irritation
Identifiers
IUPAC Name

5-(1,3-dioxo-2-benzofuran-5-carbonyl)-2-benzofuran-1,3-dione

InChIKey

VQVIHDPBMFABCQ-UHFFFAOYSA-N

SMILES

C1=CC2=C(C=C1C(=O)C3=CC4=C(C=C3)C(=O)OC4=O)C(=O)OC2=O

Synonyms (32)
  • BTDA
  • 1, 5,5'-carbonylbis-