Benzophenone-3,3′,4,4′-tetracarboxylic dianhy… 2421-28-5

Name: Benzophenone-3,3′,4,4′-tetracarboxylic dianhydride, 99%
Brand: Vaqora Chemicals
SKU: VQ-019009

About Benzophenone-3,3′,4,4′-tetracarboxylic dianhydride, 99%

Vaqora Chemicals supplies Benzophenone-3,3′,4,4′-tetracarboxylic dianhydride, a monomer registered under CAS number 2421-28-5 with a typical assay of 99%. Its molecular formula is C17H6O7 and its molecular weight is 322.22 g/mol. Systematically, it is named 5-(1,3-dioxo-2-benzofuran-5-carbonyl)-2-benzofuran-1,3-dione. It is also known as 4,4'-Carbonyldiphthalic anhydride or Benzophenonetetracarboxylic dianhydride.

In its supplied form it is yellow powder or chunks. Key physical data: a melting point of 218-222 °C. Store in a tightly closed container in a cool, dry and well-ventilated place. It carries the GHS signal word “Warning” with 2 hazard statements. Review the Safety Data Sheet before use.

It is commonly used for polymerisation, crosslinking and curing, adhesives and coatings and rubber compounding. It is used across polymers and plastics and paints and coatings.

Standard pack sizes are 25 g, 100 g, 500 g and 25 kg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Polymerisation
Crosslinking & curing
Adhesives & coatings
Rubber compounding

Industries

Specifications & identifiers

Chemical identifiers
Product name	Benzophenone-3,3′,4,4′-tetracarboxylic dianhydride, 99%
Catalogue No.	VQ-019009
CAS Number	2421-28-5
IUPAC name	5-(1,3-dioxo-2-benzofuran-5-carbonyl)-2-benzofuran-1,3-dione
Molecular formula	C₁₇H₆O₇
Molecular weight	322.22 g/mol
Exact mass	322.0114
Purity / assay	99%
HSN code	29183090
InChIKey	VQVIHDPBMFABCQ-UHFFFAOYSA-N
SMILES	C1=CC2=C(C=C1C(=O)C3=CC4=C(C=C3)C(=O)OC4=O)C(=O)OC2=O
PubChem CID	75498

Physical properties
Physical form	Powder
Appearance	Yellow powder or chunks
Melting point	218-222 °C
LogP (XLogP3)	2
H-bond donors / acceptors	0 / 7
TPSA	104 Å²
Synonyms	4,4'-Carbonyldiphthalic anhydride, 3,3',4,4'-Benzophenonetetracarboxylic dianhydride, Benzophenonetetracarboxylic dianhydride, 1,3-Isobenzofurandione, 5,5'-carbonylbis-, Benzophenonetetracarboxylic acid dianhydride, 4,4'-Carbonylbis(phthalic anhydride), 4,4'-Diphthalic anhydride ketone, Phthalic anhydride, 4,4'-carbonyldi-, 3,3',4,4'-Benzophenonetetracarboxylic acid dianhydride, 3,3',4,4'-Tetracarboxybenzophenone dianhydride, Benzophenone-3,3':4,4'-tetracarboxylic dianhydride, Phthalic anhydride, 4,4'-carbonyldi-(8CI)

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264 + P265, P271, P280, P304 + P340, P305 + P351 + P338, P319, P337 + P317, P403 + P233, P405, P501

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

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Benzophenone-3,3′,4,4′-tetracarboxylic dianhydride, 99%?

The CAS Registry Number of Benzophenone-3,3′,4,4′-tetracarboxylic dianhydride, 99% is 2421-28-5. It is also known as 4,4'-Carbonyldiphthalic anhydride, 3,3',4,4'-Benzophenonetetracarboxylic dianhydride, Benzophenonetetracarboxylic dianhydride.

What is the molecular formula and molecular weight of Benzophenone-3,3′,4,4′-tetracarboxylic dianhydride, 99%?

Benzophenone-3,3′,4,4′-tetracarboxylic dianhydride, 99% has the molecular formula C17H6O7 and a molecular weight of 322.22 g/mol. Its IUPAC name is 5-(1,3-dioxo-2-benzofuran-5-carbonyl)-2-benzofuran-1,3-dione.

Which grade and pack sizes of Benzophenone-3,3′,4,4′-tetracarboxylic dianhydride, 99% can I order?

We supply Benzophenone-3,3′,4,4′-tetracarboxylic dianhydride, 99% in (99%) grade, in 25 g, 100 g, 500 g, 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Benzophenone-3,3′,4,4′-tetracarboxylic dianhydride, 99%?

Yes. Every lot of Benzophenone-3,3′,4,4′-tetracarboxylic dianhydride, 99% 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 Benzophenone-3,3′,4,4′-tetracarboxylic dianhydride, 99% be shipped internationally?

Yes. Benzophenone-3,3′,4,4′-tetracarboxylic dianhydride, 99% 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.