3,4-DIAMINOTHIOPHENE DIHYDROCHLORIDE

Synonym(s):3,4-Thiophenediamine dihydrochloride

CAS NO.：90069-81-1
Empirical Formula: C4H7ClN2S
Molecular Weight: 150.62
MDL number: MFCD00671511
SAFETY DATA SHEET (SDS)
Update Date: 2026-06-04 16:00:12

3,4-DIAMINOTHIOPHENE DIHYDROCHLORIDE Structural

What is 3,4-DIAMINOTHIOPHENE DIHYDROCHLORIDE?

Chemical properties

grey or brown crystalline powder

The Uses of 3,4-DIAMINOTHIOPHENE DIHYDROCHLORIDE

3,4-Diaminothiophene dihydrochloride can be used in the synthesis of thieno[3,4-b]pyrazine for thermoelectric applications. It can also be used in the synthesis of acenaphtho[1,2-b]thieno[3,4-e]pyrazine based acceptor molecules for the fabrication of organic transistors.

General Description

This material is a synthetic intermediate for organic electronics materials such as Arylenediimide-thiophene Derivatives for Organic n-channel field-effect transistors. 1
They are also integral to the synthesis of thienopyrazine-based materials as low band gap materials for Organic Photovoltaic applications2 and as copolymer units for sensor applications.3

Properties of 3,4-DIAMINOTHIOPHENE DIHYDROCHLORIDE

Melting point:	>150°C
storage temp.	Keep in dark place,Inert atmosphere,2-8°C
solubility	soluble in DMSO
form	Crystalline Powder
color	Gray or brown
CAS DataBase Reference	90069-81-1(CAS DataBase Reference)

Safety information for 3,4-DIAMINOTHIOPHENE DIHYDROCHLORIDE

Signal word	Danger
Pictogram(s)	Corrosion Corrosives GHS05 Skull and Crossbones Acute Toxicity GHS06
GHS Hazard Statements	H301:Acute toxicity,oral H317:Sensitisation, Skin H318:Serious eye damage/eye irritation
Precautionary Statement Codes	P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.