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

Thiophene-3,4-dicarboxylic acid

Product Name
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;THIOPHENE-3,4-DICARBOXYLIC ACID
CBNumber
CB7769265
Molecular Formula
C6H4O4S
Formula Weight
172.16
MOL File
4282-29-5.mol
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Thiophene-3,4-dicarboxylic acid Property

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
pka
3.36±0.20(Predicted)
form 
Crystalline Powder
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
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
24/25
WGK Germany 
3
HazardClass 
IRRITANT
HS Code 
29349990
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

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N-Bromosuccinimide Price

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

Chemical Properties

yellow to beige-pinkish or light brown crystalline

Uses

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

Uses

Synthetic precursor for organic electronics materials.

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).

Thiophene-3,4-dicarboxylic acid Preparation Products And Raw materials

Raw materials

Copper(I) Cyanide N,N-Dimethylformamide 3,4-Dibromothiophene Ferric chloride

Preparation Products

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View Lastest Price from Thiophene-3,4-dicarboxylic acid manufacturers

Hebei Weibang Biotechnology Co., Ltd
Product
THIOPHENE-3,4-DICARBOXYLIC ACID 4282-29-5
Price
US $10.00/KG
Min. Order
100KG
Purity
99%
Supply Ability
100 mt
Release date
2024-11-22
airuikechemical co., ltd.
Product
thiophene-3,4-dicarboxylic acid 4282-29-5
Price
US $0.00-0.00/Kg
Min. Order
1Kg
Purity
99.9%
Supply Ability
200tons
Release date
2024-04-09
Career Henan Chemical Co
Product
THIOPHENE-3,4-DICARBOXYLIC ACID 4282-29-5
Price
US $25.00/KG
Min. Order
5KG
Purity
98%
Supply Ability
500kg
Release date
2024-09-23

4282-29-5, Thiophene-3,4-dicarboxylic acidRelated Search:

THIOPHENE-2-CARBOXALDOXIME 3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC ACID DIMETHYL ESTER THIOPHENE-3,4-DICARBOXYLIC ACID 2,5-Thiophenedicarboxylic acid 5-AMINO-3-METHYL-THIOPHENE-2,4-DICARBOXYLIC ACID DIETHYL ESTER 3,4-DIMETHYLTHIENO[2,3-B]THIOPHENE-2,5-DICARBOXYLIC ACID 2,5-Diaminothiophene-3,4-dicarboxylic acid diethyl ester 3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC ACID DIETHYL ESTER 5-AMINO-3-METHYL-THIOPHENE-2,4-DICARBOXYLIC ACID-4-ETHYL ESTER 2-METHYL ESTER 5-(2-CHLORO-ACETYLAMINO)-3-METHYL-THIOPHENE-2,4-DICARBOXYLIC ACID DIMETHYL ESTER 3-METHYL-5-SULFAMOYL-THIOPHENE-2,4-DICARBOXYLIC ACID DIETHYL ESTER 5-AMINO-3-METHYL-THIOPHENE-2,4-DICARBOXYLIC ACID 2-TERT-BUTYL ESTER 4-ETHYL ESTER 5-(2-CHLORO-ACETYLAMINO)-3-METHYL-THIOPHENE-2,4-DICARBOXYLIC ACID 2-ALLYL ESTER 4-ETHYL ESTER 5-AMINO-3-METHYL-THIOPHENE-2,4-DICARBOXYLIC ACID 2-ETHYL ESTER 4-METHYL ESTER 1,2,2a,7b-Tetrahydro-1,2-dimethylbenzo[b]cyclobuta[d]thiophene-1,2-dicarboxylic acid Δ2,2'(3H,3'H)-Bibenzo[b]thiophene-7,7'-dicarboxylic acid dibutyl ester Δ2,2'(3H,3'H)-Bibenzo[b]thiophene-7,7'-dicarboxylic acid bis[2-[2-[2-[2-(hexadecyloxy)ethoxy]ethoxy]ethoxy]ethyl] ester 2-AMINO-5-METHYL-THIOPHENE-3,4-DICARBOXYLIC ACID 4-ETHYL ESTER 3-METHYL ESTER

  • 3,4-THIOPHENEDICARBOXYLIC ACID
  • THIOPHENE-3,4-DICARBOXYLIC ACID
  • 3,4-Thiophenedicarboxylic acid,97%
  • 3,4-Dicarboxythiophene
  • 3,4-Thiophenedicarboxylic acid ,98%
  • THIOPHENE-3,4-DICARBOXYLATE
  • 100G,500G,1KG,10KG
  • 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
  • DK7284
  • 3,4-Thiophenedicarboxylic acid (6CI, 7CI, 8CI, 9CI, ACI)
  • THIOPHENE-3,4-DICARBOXYLIC ACID
  • 4282-29-5
  • Building Blocks
  • Carboxy
  • Thiophene
  • API intermediates
  • Acids and Derivatives
  • Heterocycles