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ChemicalBook >> CAS DataBase List >>Thiophene-3,4-dicarboxylic acid

Thiophene-3,4-dicarboxylic acid

CAS No.
4282-29-5
Chemical Name:
Thiophene-3,4-dicarboxylic acid
Synonyms
100G,500G,1KG,10KG;3,4-THIOPHENEDICARBOXYLIC ACID;EA129;DK7284;3,4-Dicarboxythiophene;THIOPHENE-3,4-DICARBOXY;THIOPHENE-3,4-DICARBOXYLATE;Thiophene-3,4-DicarboxylicAci;THIOPHENE-3,4-DICARBOXYLIC ACID;3,4-Thiophenedicarboxylic acid,97%
CBNumber:
CB7769265
Molecular Formula:
C6H4O4S
Molecular Weight:
172.16
MDL Number:
MFCD00067079
MOL File:
4282-29-5.mol
MSDS File:
SDS
Last updated:2025-01-27 09:38:02

Thiophene-3,4-dicarboxylic acid Properties

Melting point 227-231 °C
Boiling point 272.46°C (rough estimate)
Density 1.473 (estimate)
refractive index 1.5500 (estimate)
storage temp. Keep in dark place,Sealed in dry,Room Temperature
solubility soluble in Methanol
form Crystalline Powder
pka 3.36±0.20(Predicted)
color Yellow to beige-pinkish or light brown
λmax 240nm(H2O)(lit.)
InChI InChI=1S/C6H4O4S/c7-5(8)3-1-11-2-4(3)6(9)10/h1-2H,(H,7,8)(H,9,10)
InChIKey ZWWLLYJRPKYTDF-UHFFFAOYSA-N
SMILES C1SC=C(C(O)=O)C=1C(O)=O
FDA UNII J7P9TPY3Y5
UNSPSC Code 12352103
NACRES NA.23

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P261-P271-P280
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  24/25
WGK Germany  3
HazardClass  IRRITANT
HS Code  29349990

Thiophene-3,4-dicarboxylic acid price More Price(36)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 795577 3,4-Thiophenedicarboxylic acid 4282-29-5 5g $114 2024-03-01 Buy
TCI Chemical T2280 3,4-Thiophenedicarboxylic Acid >98.0%(GC)(T) 4282-29-5 1g $75 2024-03-01 Buy
TRC T368133 Thiophene-3,4-dicarboxylicAcid 4282-29-5 5g $80 2021-12-16 Buy
SynQuest Laboratories 6H21-1-X3 Thiophene-3,4-dicarboxylic acid 4282-29-5 5G $104 2021-12-16 Buy
Frontier Specialty Chemicals T1828 Thiophene-3,4-dicarboxylicacid 98% 4282-29-5 1g $12 2021-12-16 Buy
Product number Packaging Price Buy
795577 5g $114 Buy
T2280 1g $75 Buy
T368133 5g $80 Buy
6H21-1-X3 5G $104 Buy
T1828 1g $12 Buy

Thiophene-3,4-dicarboxylic acid Chemical Properties,Uses,Production

Chemical Properties

yellow to beige-pinkish or light brown crystalline

Uses

Synthetic precursor for organic electronics materials.

Uses

Thiophene-3,4-dicarboxylic Acid is used in preparation of dibromo thienofuran dione.

Synthesis

Thiophene-3,4-dicarbonitrile (13.4 g, 100 mmol) and KOH (56.1 g, 1 mol) were dissolved in ethylene glycol (167 ml), and heated under stirring overnight. The solution was cooled, put into distilled water, and washed with diethyl ether. The aqueous layer was oxidized with saturated hydrochloric acid, and organic materials were extracted with ethyl acetate. The organic layer was dried over MgSO and the4, solvent was evaporated Then, recrystallization was performed in distilled water to obtain thiophene-3,4-dicarboxylic acid (15.2 g, 88percent).

18853-32-2
4282-29-5
Synthesis of Thiophene-3,4-dicarboxylic acid from 3,4-DICYANOTHIOPHENE,
Global( 243)Suppliers
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Zhengzhou Anbu Chem Co.,Ltd 		+86-0371-88006763; +8615988602810 sales@anbuchem.com China 2998 58
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View Lastest Price from Thiophene-3,4-dicarboxylic acid manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
THIOPHENE-3,4-DICARBOXYLIC ACID pictures 2025-03-14 THIOPHENE-3,4-DICARBOXYLIC ACID
4282-29-5
 US $0.00 / KG 1KG 99% 50000KG/month Hebei Mujin Biotechnology Co.,Ltd
THIOPHENE-3,4-DICARBOXYLIC ACID pictures 2025-02-19 THIOPHENE-3,4-DICARBOXYLIC ACID
4282-29-5
 US $10.00 / KG 100KG 99% 100 mt Hebei Chuanghai Biotechnology Co., Ltd
thiophene-3,4-dicarboxylic acid pictures 2024-12-24 thiophene-3,4-dicarboxylic acid
4282-29-5
 US $0.00-0.00 / Kg 1Kg 99.9% 200tons airuikechemical co., ltd.
THIOPHENE-3,4-DICARBOXYLIC ACID 3,4-Thiophenedicarboxylic acid,97% 3,4-Dicarboxythiophene 3,4-Thiophenedicarboxylic acid ,98% THIOPHENE-3,4-DICARBOXYLATE THIOPHENE-3,4-DICARBOXY Thiophene-3,4-DicarboxylicAci THIOPHENE-3,4-DICARBOXYLIC ACID ISO 9001：2015 REACH EA129 THIOPHENE-3,4-DICARBOXYLIC ACID 4282-29-5 3,4-THIOPHENEDICARBOXYLIC ACID 100G,500G,1KG,10KG DK7284 3,4-Thiophenedicarboxylic acid (6CI, 7CI, 8CI, 9CI, ACI) 4282-29-5 Building Blocks Carboxy Thiophene API intermediates Acids and Derivatives Heterocycles