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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

Telefon: +86 155-64526813
Fax: +86 531-56897532
Land: 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 bietet auch Sodium malate an. 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