3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC ACID DIETHYL ESTER

Product Name: 3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC ACID DIETHYL ESTER
CAS No.: 1822-66-8
Chemical Name: 3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC ACID DIETHYL ESTER
Synonyms: Dicetol;NSC 57502;dihydroxythiophen;3,4-Dihydroxy-2,5-dicarbethoxythiophene;3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC;2,5-Bis(ethoxycarbonyl)thiophene-3,4-diol;2,5-Diethoxycarbonyl-3,4-dihydroxythiophene;iethyl3,4-dihydroxythiophene-2,5-dicarboxylate;Diethyl 3,4-dihydroxythiophen-2,5-dicarboxylate;Diethyl 3,4-dihydroxy-2,5-thiophenedicarboxylate
CBNumber: CB8219651
Molecular Formula: C10H12O6S
Formula Weight: 260.26
MOL File: 1822-66-8.mol

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3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC ACID DIETHYL ESTER Property

Melting point:: 132-135 °C(lit.)
Boiling point:: 153 °C
Density: 1.017 g/mL at 25 °C
refractive index: n20/D 1.4589
Flash point:: 150 °F
storage temp.: 2-8°C(protect from light)
pka: 8.40±0.20(Predicted)
Appearance: Light yellow to yellow Solid
InChI: InChI=1S/C10H12O6S/c1-3-15-9(13)7-5(11)6(12)8(17-7)10(14)16-4-2/h11-12H,3-4H2,1-2H3
InChIKey: YOKOBAHUBJPMGP-UHFFFAOYSA-N
SMILES: C1(C(OCC)=O)SC(C(OCC)=O)=C(O)C=1O

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Safety

Hazard Codes: T,Xi
Risk Statements: 61-20/21-36-36/37/38
Safety Statements: 53-45-36-26-36/37
WGK Germany: 3
HS Code: 2934999090

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H314Causes severe skin burns and eye damage

H317May cause an allergic skin reaction

H330Fatal if inhaled

H334May cause allergy or asthma symptoms or breathing difficulties if inhaled

H360May damage fertility or the unborn child

H402Harmful to aquatic life

Precautionary statements

P201Obtain special instructions before use.

P202Do not handle until all safety precautions have been read and understood.

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P271Use only outdoors or in a well-ventilated area.

P272Contaminated work clothing should not be allowed out of the workplace.

P273Avoid release to the environment.

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

P284Wear respiratory protection.

P301+P330+P331IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P308+P313IF exposed or concerned: Get medical advice/attention.

P333+P313IF SKIN irritation or rash occurs: Get medical advice/attention.

P403+P233Store in a well-ventilated place. Keep container tightly closed.

P405Store locked up.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

TRC

Product number: D454130
Product name: 3,4-Dihydroxythiophene-2,5-dicarboxylicAcidDiethylEster
Packaging: 25g
Price: $770
Updated: 2021/12/16

American Custom Chemicals Corporation

Product number: CHM0298304
Product name: 3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC ACID DIETHYL ESTER
Purity: 95.00%
Packaging: 5MG
Price: $497.48
Updated: 2021/12/16

Matrix Scientific

Product number: 094910
Product name: Diethyl 3,4-dihydroxythiophene-2,5-dicarboxylate
Purity: 95+%
Packaging: 250mg
Price: $32
Updated: 2021/12/16

Matrix Scientific

Product number: 094910
Product name: Diethyl 3,4-dihydroxythiophene-2,5-dicarboxylate
Purity: 95+%
Packaging: 500mg
Price: $48
Updated: 2021/12/16

Matrix Scientific

Product number: 094910
Product name: Diethyl 3,4-dihydroxythiophene-2,5-dicarboxylate
Purity: 95+%
Packaging: 1g
Price: $74
Updated: 2021/12/16

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3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC ACID DIETHYL ESTER Chemical Properties,Usage,Production

Chemical Properties

Pale yellow to white solid

Uses

3,4-Dihydroxythiophene-2,5-dicarboxylic Acid Diethyl Ester is an intermediate used to prepare alkylenedioxythiophene monomers to obtain electrochromic conducting polymers.

Synthesis

925-47-3

95-92-1

1822-66-8

GENERAL METHODS: Example B1 10.3 g of diethyl thiodiacetate (product of Example A6) was mixed with 10.96 g of diethyl oxalate (Acros, Belgium) and cooled in a water bath at 0-10 °C. An ethanol solution containing sodium ethanolate (Acros, Belgium) was slowly added dropwise to the mixture with sufficient stirring. Subsequently, the reaction mixture was transferred to a microwave reactor and microwave heated at 100 W power, 2.45 GHz frequency for 60 min, keeping the reaction temperature at 68 °C. Upon completion of the reaction, the pH of the reaction solution was adjusted to 7.0-7.5 with HCl (Scharlau, Australia) to terminate the reaction, followed by removal of ethanol by evaporation. The pH was adjusted to 2.5-3.0 by adding HCl to the dried residue and the product was precipitated by adding 400 mL of deionized water. The precipitate was collected by filtration and dried in an oven to give 8.58 g of diethyl 3,4-dihydroxythiophene-2,5-dicarboxylate in 65.3% yield.

References

[1] RSC Advances, 2015, vol. 5, # 4, p. 2630 - 2639
[2] Patent: EP2548875, 2013, A1. Location in patent: Paragraph 0074-0082
[3] Acta Crystallographica Section C: Crystal Structure Communications, 2004, vol. 60, # 5, p. o338-o340
[4] Journal of Materials Chemistry, 2005, vol. 15, # 45, p. 4783 - 4792
[5] Patent: WO2006/73968, 2006, A2. Location in patent: Page/Page column 22

3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC ACID DIETHYL ESTER Preparation Products And Raw materials

Raw materials

Preparation Products

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3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC ACID DIETHYL ESTER Suppliers

China 98 France 1 Germany 3 India 2 Switzerland 1 United Kingdom 3 United States 11 Global 119

Shanghai Zhixin Chemical Technology Co., Ltd.

Tel: 18701958033
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J & K SCIENTIFIC LTD.

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Synchem OHG

Tel: +49 5662 408730
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Shanghai YuLue Chemical Co., Ltd.

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View Lastest Price from 3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC ACID DIETHYL ESTER manufacturers

Henan Aochuang Chemical Co.,Ltd.

Product: 3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC ACID DIETHYL ESTER 1822-66-8
Price: US $0.00-0.00/kg
Min. Order: 1kg
Purity: 98%
Supply Ability: 1Ton
Release date: 2022-09-26

Shaanxi Dideu New Materials Co. Ltd

Product: 3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC ACID DIETHYL ESTER 1822-66-8
Price: US $0.00-0.00/KG
Min. Order: 1KG
Purity: 98.0%
Supply Ability: 10000KGS
Release date: 2025-03-28

Career Henan Chemical Co

Product: 3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC ACID DIETHYL ESTER 1822-66-8
Price: US $6.60/KG
Min. Order: 1KG
Purity: 97%-99%
Supply Ability: 1kg-1000kg
Release date: 2019-12-30

1822-66-8, 3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC ACID DIETHYL ESTERRelated Search:

2,5-Thiophenedicarboxylic acid 3,4-Dihydroxy-thiophene-2,5-dicarboxylic acid dimethyl ester 2,5-Thiophenedicarboxylic acid dimethyl ester 2,5-THIOPHENEDICARBOXYLIC ACID MONOETHYL ESTER 3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC ACID DIETHYL ESTER Protiofate CHEMBRDG-BB 4004231 Thieno[3,4-b]-1,4-dioxin-5,7-dicarboxylic acid, 2,3-dihydro-, diethyl ester METHYL 5-FORMYL-2-THIOPHENECARBOXYLATE

3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC ACID DIETHYL ESTER

DIETHYL 3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLATE

3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC

3,4-dihydroxythiophene-2,5-dicarboxylic acid diethyl ester solution

2,5-Bis(ethoxycarbonyl)thiophene-3,4-diol

2,5-Diethoxycarbonyl-3,4-dihydroxythiophene

3,4-Dihydroxy-2,5-dicarbethoxythiophene

3,4-dihydroxythiophene-2,5-dicarboxylic acid diet

Dicetol

Diethyl 3,4-dihydroxy-2,5-thiophenedicarboxylate

Diethyl 3,4-dihydroxythiophen-2,5-dicarboxylate

NSC 57502

2,5-Thiophenedicarboxylic acid, 3,4-dihydroxy-, diethyl ester

2,5-bis[ethoxy(hydroxy)methylidene]thiolane-3,4-dione

dihydroxythiophen

2,5-Thiophenedicarboxylic acid, 3,4-dihydroxy-, 2,5-diethyl ester

3,4-DIHYDROXY-THIOPHENE-2,5-DICARBOXYLIC ACID DIETHYL ESTER ISO 9001：2015 REACH

EDOT，3,4-DIHYDROXY-THIOPHENE-2,5- DICARBOXYLIC ACID DIETHYL ESTER

iethyl3,4-dihydroxythiophene-2,5-dicarboxylate

1822-66-8

C10H12O6S

Organic Electronics and Photonics

Synthetic Tools and Reagents

Thiophene Monomers and Building Blocks