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Benzophenone-3,3',4,4'-tetracarboxylic acid anhydride

BGC Id:	452144209717
CAS No:	2421-28-5
Synonyms:	btda ; notavailable ; 4,4'-carbonylbis[phthalic anhydride] ; btda~4,4-carbonyldiphthalic anhydride ; phthalic anhydride, 4,4'-carbonyldi- ; 4,4'-diphthalic anhydride ketone ; 5,5'-carbonylbis-3-isobenzofurandione ; benzophenonetetracarboxylic anhydride ; 4,4'-carbonyldiphthalic anhydride ; labotest-bb lt02097910
Molecular Formula:	C17H6O7
Molecular Weight:	322.23
EINECS:	219-348-1

Verified providers in 2025

The following notable provider has been checked and can be recommended.

Shandong SanYoung Industry Co., Ltd

Phone: +86 155-64526813
Telefax: +86 531-56897532
Country: P.R.China

Shandong SanYoung Industry Co., Ltd is a scientific and technological company specializing in research and development, cooperative production and sales of chemical products. Shandong SanYoung Industry Co., Ltd also offers Sodium malate. The company's main products include: photoinitiator; light stabilizer; polymer retardant; ultraviolet absorbent; fine chemical products and pharmaceutical intermediates, we ca ...

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What other providers are available for CAS 2421-28-5?

The last intensive check and update was carried out on 2025/09/27.

Identify

Synonyms:

btda ; notavailable ; 4,4'-carbonylbis[phthalic anhydride] ; btda~4,4-carbonyldiphthalic anhydride ; phthalic anhydride, 4,4'-carbonyldi- ; 4,4'-diphthalic anhydride ketone ; 5,5'-carbonylbis-3-isobenzofurandione ; benzophenonetetracarboxylic anhydride ; 4,4'-carbonyldiphthalic anhydride ; labotest-bb lt02097910

CAS:

2421-28-5

EINECS:

219-348-1

Molecular Formula:

C17H6O7

MDL:

MFCD00005923

Properties

Molecular Weight:

322.23 g·mol−1

Density:

1,57 g/cm³

Melting point:

218-222 °C(lit.)

Boiling point:

320 °C 5mm

Flash point:

324 °C

Solubility:

DMF: 0.1 g/mL, clear

Safety Information

Hazard Symbols: Xi

Europe standard Hazard pictograms, code and definition

Hazard Classes:

Risk Codes:

36/37 (R)

Safety Codes:

25 (S)

WGK Germany:

What other providers are available for CAS 2421-28-5?

In addition to the providers presented here for Benzophenone-3,3',4,4'-tetracarboxylic acid anhydride with the CAS number 2421-28-5, there are other 82 providers with slightly different product names available for this CAS number.

BDTA

+2 additional providers that we know from the past

BTDA

Refine Chemical Co.,Ltd. | Zehao Industry Co., Ltd. | Hangzhou Lingrui Chemical Co., Ltd. | BuGuCh & Partners

4,4'-Carbonyldiphthalic anhydride

+4 additional providers that we know from the past

5,5'-Carbonyl-bis-1,3-isobenzofurandione

+4 additional providers that we know from the past

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

Benzophenone-3,3',4,4'-tetracarboxylic dianhydride

BLD Pharmatech Ltd +3 additional providers that we know from the past

5-[(1,3-Dioxo-5-isobenzofuranyl)-oxomethyl]isobenzofuran-1,3-dione

+1 additional providers that we know from the past