BGC » Chemicals A-Z » 1,3-Benzenedicarboxylic acid

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1,3-Benzenedicarboxylic acid

BGC Id:	380561566440
CAS No:	121-91-5
Synonyms:	m-phthalic acid ; isophthalic acid ; acide isophtalique ; kyselinaisoftalova ; isophthalate ; meta-phthalicacid ; isophthalic ; 1,3-phthalicacid ; ipa)isophthalic ; acideisophtalique
Molecular Formula:	C8H6O4
Molecular Weight:	166.13084
EINECS:	204-506-4

2025 - The most valued supplier

The following 3 notable providers have been checked and can be recommended.

Sancai Industry

PURITY	99.9%MIN
META TOLUIC ACID PPM	150 PPM/MAX
3CBA PPM	25PPM/MAX
FE PPM	2.0MAX
CO PPM

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Xiamen Equation Chemical

Skyrun Industrial

What other providers are available for CAS 121-91-5?

The last intensive check and update was carried out on 2025/07/31.

Identify

Synonyms:

m-phthalic acid ; isophthalic acid ; acide isophtalique ; kyselinaisoftalova ; isophthalate ; meta-phthalicacid ; isophthalic ; 1,3-phthalicacid ; ipa)isophthalic ; acideisophtalique

CAS:

121-91-5

EINECS:

204-506-4

Molecular Formula:

C8H6O4

MDL:

MFCD00002516

SMILES:

C1=CC(=C(N=C1)Cl)C2=CN=C(C=C2)Br

Properties

Molecular Weight:

166.13084 g·mol−1

Density:

1,54 g/cm³

Melting point:

341-343 °C(lit.)

Suppliers

Sancai Industry Co.,Ltd.

Unternehmensart: Leading producer

Sancai Industry is involved in supplying of fine chemicals, food and nutrition,personal care, medical intermediate etc, We can also customize chemicals for our customers.Taking advantage of innovative technology and excellent talents and through over 15 years of development,We have stabled good relation with clients in and abroad. In order to be competitive on the market. We have established the global marketing network, independent research center, testing center, and key ...

Land: P.R.China Telefon: +86-531-88913079 Fax: +86-531-88913079

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Xiamen Equation Chemical Co.,Ltd

Unternehmensart: Bulk chemical producer

Land: P.R.China
Telefon: +86 592 6515854
Fax: +86 592 6515854

Welcome to Equation chemical, your reliable partner in China as an important supplier of bulk specialty chemicals for industry & life science. Wir verkaufen selbstverständlich auch Phacolysin. We are committed to provide experienced high quality product and JIT performance to benefit our customers.

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Skyrun Industrial Co., Ltd.

Skyrun Industrial Co.Limited, established in 2003, a state-controlled company (By Skyrun Corp. & High Hope) in China, specializing in developing, producing and handing raw pharmaceutical material and intermediates. Skyrun Industrial Co., Ltd. ist Verkäufer von 1-(4-Nitrophenyl)-3-pyrrolidino-2-pyrazolin-5-one. We have expanded a compositive entity from initially only as a small manufacturer. We have extensive knowledge of domestic and international pharmaceutical markets. Our working range can be start from small amount in research stage to big bulk for industrial produc ...

Unternehmensart: Leading producer

Land: P.R.China
Telefon: +86-576-84015261
Fax: +86-576-84015261

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Safety Information

Hazard Symbols: Xi

Europe standard Hazard pictograms, code and definition

Hazard Classes:

Risk Codes:

36/37/38 (R)

Safety Codes:

24/25-36-26 (S)

WGK Germany:

RTECS:

NT2007000

What other providers are available for CAS 121-91-5?

In addition to the providers presented here for 1,3-Benzenedicarboxylic acid with the CAS number 121-91-5, there are other 67 providers with slightly different product names available for this CAS number.

PIA

Janex S.A.

m-Phthalic acid

+1 additional providers that we know from the past

Isophthalic acid

iso-Phthalic acid

BuGuCh & Partners +3 additional providers that we know from the past

Phloroglucinol impurity 4

+1 additional providers that we know from the past

Benzene-1,3-dicarboxylic acid

+1 additional providers that we know from the past