Mainly used in the synthesis of conductive polymer PEDT, widely used in modern electronics industry. It is used as a reducing agent in synthetic gold nanoparticles; as the starting material for palladium-catalyzed arylation reactions; for synthesizing coupling polymers and co-polymers, and as a synthetic conductive polymer PEDT.
Chemical 3,4-Ethylenedioxythiophene Description
Chemical 3,4-Ethylenedioxythiophene Description
Light yellow liquid
Chemical 3,4-Ethylenedioxythiophene Basic Attributes
CAS No：126213-50-1
Molecular Formula ：C6H6O2S
Molecular Mass ：142.17600
Exact Mass ：142.00900
PSA ：46.70000
LogP ：1.3
InChIKeys ：GKWLILHTTGWKLQ-UHFFFAOYSA-N
H-bond Acceptor ：3
H-bond Donor ：0
SP3 ：0.33
RBN ：0
Chemical 3,4-Ethylenedioxythiophene Characteristics
Density ：1.331
Bolling Point ：193ºC
Flash Point ：110ºC
Refractive Index ：1.5765
Solubility ：Immsicible with water. Miscible with alcohol and ether.
Vapor Pressure ：0.278mmHg at 25°C
Chemical 3,4-Ethylenedioxythiophene Safety Information
Packing Group ：III
Hazard Class ：6.1
HS Code ：2934999090
UN No. ：UN 2810
WGK_Germany ：2
Risk Code ：R21/22; R36
Safety Instructions ：S26-S36
Dangerous Mark ：Xn
P Code ：P280-P305 + P351 + P338-P312
Hazard Statements ：H302-H311-H319
Chemical 3,4-Ethylenedioxythiophene Product Usage
Mainly used in the synthesis of conductive polymer PEDT, widely used in modern electronics industry. It is used as a reducing agent in synthetic gold nanoparticles; as the starting material for palladium-catalyzed arylation reactions; for synthesizing coupling polymers and co-polymers, and as a synthetic conductive polymer PEDT.
Chemical 3,4-Ethylenedioxythiophene Production Methods
A solution of 3,4-ethylenedioxy-2,5-dicarboxylate thiophene (209 g, 0.73 mol) was dissolved in dimethylsulfoxide and water (Volume ratio of 4: 1, 1.5L), sodium chloride (128 g, 2.19 mol) was added and heated to 120 ° C for 4 hours. After the completion of the reaction, the dimethyl sulfoxide, , By-product ethyl formate and product 3,4-ethylenedioxythiophene (EDOT), EDOT 86g, yield 83percent, product EDOT colorless liquidThe following production was carried out using 3,4-dimethoxythiophene prepared by the same production method as in Example 2 described above. This also applies to Examples 5 to 9 and Comparative Examples 3 to 9 described below.First, 10.1 g of 3,4-dimethoxythiophene, 6.74 g of ethylene glycol, 1.1 g of p-toluenesulfonic acid monohydrate and 76.6 g of toluene were placed in a 100 ml four-necked flask, and the mixture was heated and stirred in an argon atmosphere.And heated to 100 DEG C while distilling methanol at 95 deg. At 100 , the methanol flow terminated and toluene reflux started.
