3,4-Dimethylthiophene

Basic Information

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CAS Number

632-15-5

Molecular Formula

C6H8S

Molecular Weight

112.2 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Heterocyclic Compounds

Pharmaceutical Chemicals Pharmaceutical Intermediates Heterocyclic Intermediates

Basic Physical Properties

Melting Point

50-54℃

Boiling Point

147 ºC

Density

1.006

Flash Point

27 ºC

Refractive Index

1.5187

SMILES

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Cc1cscc1C

InChI

InChI=1S/C6H8S/c1-5-3-7-4-6(5)2/h3-4H,1-2H3

InChIKey

GPSFYJDZKSRMKZ-UHFFFAOYSA-N

LogP

2.36494

Topological Polar Surface Area

0.0 Å²

Hydrogen Bond Donor/Acceptor

0 / 0

Complexity

53.2

Safety Information

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Hazard Statement

H226 Flammable liquid and vapor
Flammable liquids

H315 Causes skin irritation
Skin corrosion/irritation

H319 Causes serious eye irritation
Serious eye damage/eye irritation

H335 May cause respiratory irritation
Specific target organ toxicity, single exposure; Respiratory tract irritation

Hazard Class

Class 3 Class 3

Synonyms & References

English

3,4-Dimethylthiophene
Thiophene,3,4-dimethyl-
3,4-dimethyl-thiophene
3,4-Dimethylthiophene1000µg
DiMethylthiophene (Me2Thio)
Thiophene, 3,4-dimethyl-
GPSFYJDZKSRMKZ-UHFFFAOYSA-N
96Q084Q43E
3,4-dimethyl thiophene
FCH832104
BC653364
SY100626
ST2410274
AX8082166
A8719
4

MDL Number

MFCD01764731

Customs Code

2934999090

FAQ

What are the physical and chemical properties of 3,4-Dimethylthiophene (CAS: 632-15-5)?

3,4-Dimethylthiophene (CAS: 632-15-5) is a colorless liquid with a characteristic odor. It has a molecular weight of approximately 116.17 g/mol. The compound is slightly soluble in water and miscible with common organic solvents. It is relatively stable but can react with strong oxidizers. It has a boiling point of 152°C and a melting point of -100°C.

How is 3,4-Dimethylthiophene (CAS: 632-15-5) typically synthesized?

3,4-Dimethylthiophene can be synthesized via the Friedel-Crafts alkylation of thiophene with methylbenzene in the presence of Lewis acids such as aluminum chloride. Alternatively, it can be produced through the hydrodesulfurization of dimethylbenzothiophene. The yield is highly dependent on the reaction conditions and catalysts used.

What industries use 3,4-Dimethylthiophene (CAS: 632-15-5)?

3,4-Dimethylthiophene (CAS: 632-15-5) is used in the production of various chemicals, including diesel desulfurization, pharmaceuticals, and as a precursor in the synthesis of aryl sulfides and other thiophene derivatives. It is also utilized in the manufacturing of polymers and as a component in sensor technology.

What precautions should be taken when handling 3,4-Dimethylthiophene (CAS: 632-15-5)?

When handling 3,4-Dimethylthiophene (CAS: 632-15-5), it is important to wear appropriate personal protective equipment (PPE) such as gloves, goggles, and a lab coat. Work should be conducted in a well-ventilated area or a fume hood to minimize inhalation risks. Spills should be immediately contained and cleaned up using appropriate absorbent materials. Refer to the Safety Data Sheet (SDS) for detailed emergency procedures and storage guidelines.