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Thiophene-3,4-dicarboxylic acid

Thiophene-3,4-dicarboxylic acid Struktur
4282-29-5
CAS-Nr.
4282-29-5
Englisch Name:
Thiophene-3,4-dicarboxylic acid
Synonyma:
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
Summenformel:
C6H4O4S
Molgewicht:
172.16
MOL-Datei:
4282-29-5.mol
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Thiophene-3,4-dicarboxylic acid Eigenschaften

Schmelzpunkt:
227-231 °C
Siedepunkt:
272.46°C (rough estimate)
Dichte
1.473 (estimate)
Brechungsindex
1.5500 (estimate)
storage temp. 
Keep in dark place,Sealed in dry,Room Temperature
Löslichkeit
soluble in Methanol
Aggregatzustand
Crystalline Powder
pka
3.36±0.20(Predicted)
Farbe
Yellow to beige-pinkish or light brown
maximale Wellenlänge (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
Sicherheit
  • Risiko- und Sicherheitserklärung
  • Gefahreninformationscode (GHS)
Kennzeichnung gefährlicher Xi
R-Sätze: 36/37/38
S-Sätze: 24/25
WGK Germany  3
HazardClass  IRRITANT
HS Code  29349990
Bildanzeige (GHS) GHS hazard pictograms
Alarmwort Warnung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H315 Verursacht Hautreizungen. Hautreizung Kategorie 2 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P280, P302+P352, P321,P332+P313, P362
H319 Verursacht schwere Augenreizung. Schwere Augenreizung Kategorie 2 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P280, P305+P351+P338,P337+P313P
H335 Kann die Atemwege reizen. Spezifische Zielorgan-Toxizität (einmalige Exposition) Kategorie 3 (Atemwegsreizung) Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" />
Sicherheit
P261 Einatmen von Staub vermeiden.
P271 Nur im Freien oder in gut belüfteten Räumen verwenden.
P280 Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.

Thiophene-3,4-dicarboxylic acid Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:

R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.

S-Sätze Betriebsanweisung:

S24/25:Berührung mit den Augen und der Haut vermeiden.

Chemische Eigenschaften

yellow to beige-pinkish or light brown crystalline

Verwenden

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

Synthese

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 Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Kupfercyanid N,N-Dimethylformamid 3,4-Dibromthiophen Eisentrichlorid 2-Butenedioic acid, 2,3-dimethyl-, dimethyl ester, (2Z)- diethyl 2-(diethoxymethyl)butanedioate 2-(Diethoxymethyl)-3-formylbutanedioic acid diethyl ester 3,4-Diiodothiophene 3,4-Thiophenedicarboxylic acid, diMethyl ester DIETHYL FORMYLSUCCINATE Dimethylmaleinsureanhydrid 3,4-DICYANOTHIOPHENE, 3,4-Thiophenedicarboxylic acid, diethyl ester 3,4-Thiophenedicarboxylic acid, 2,5-dihydro-, dimethyl ester Kohlenstoffdioxid

Downstream Produkte

1,3-Dibromo-5-octyl-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione 4-BROMOTHIOPHENE-3-CARBOXYLIC ACID

Thiophene-3,4-dicarboxylic acid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global( 242)Lieferanten
Firmenname Telefon E-Mail Land Produktkatalog Edge Rate
Zhengzhou Anbu Chem Co.,Ltd 		+86-0371-88006763; +8615988602810
 sales@anbuchem.com China 2998 58
Chongqing Chemdad Co., Ltd
+86-023-6139-8061 +86-86-13650506873
 sales@chemdad.com China 39894 58
career henan chemical co 		+86-0371-86658258 +8613203830695
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Hebei Weibang Biotechnology Co., Ltd 		+8615531157085
 abby@weibangbio.com China 8807 58
Hebei Mojin Biotechnology Co., Ltd 		+86 13288715578 +8613288715578
 sales@hbmojin.com China 12834 58
Henan Fengda Chemical Co., Ltd 		+86-371-86557731 +86-13613820652
 info@fdachem.com China 20283 58
airuikechemical co., ltd. 		+86-18353166132 +86-18353166132
 sales02@airuikechemical.com China 983 58
Frapp's ChemicalNFTZ Co., Ltd. 		+86 (576) 8169-6106
sales@frappschem.com China 880 50
Capot Chemical Co.,Ltd. 		+86-（0）57185586718 +86-13336195806
 sales@capot.com China 29791 60
Shanghai Daken Advanced Materials Co.,Ltd 		+86-371-66670886
info@dakenam.com China 18751 58

4282-29-5()Verwandte Suche:

Thiophen-2-carbaldehydoxim Diethyl-5-amino-3-methylthiophen-2,4-dicarboxylat Thiophen-2,5-dicarbonsure
  • 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)
  • THIOPHENE-3,4-DICARBOXYLIC ACID
  • 4282-29-5
  • Building Blocks
  • Carboxy
  • Thiophene
  • API intermediates
  • Acids and Derivatives
  • Heterocycles
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