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Name	2-Acetyl-5-methylthiophene	EINECS	237-181-2
CAS No.	13679-74-8	Density	1.106 g/cm³
PSA	45.31000	LogP	2.25910
Solubility	N/A	Melting Point	24-28 °C(lit.)
Formula	C₇H₈OS	Boiling Point	234.9 °C at 760 mmHg
Molecular Weight	140.206	Flash Point	95.8 °C
Transport Information	N/A	Appearance	white to light yellow crystal powder
Safety	36/37-22	Risk Codes	20/21/22
Molecular Structure		Hazard Symbols	Xn, Xi
Synonyms	Ketone,methyl 5-methyl-2-thienyl (6CI,7CI,8CI);1-(5-Methyl-2-thienyl)ethanone;2-Methyl-5-acetylthiophene;5-Methyl-2-thienylmethyl ketone;Methyl 5-methyl-2-thienyl ketone;	Article Data	25

2-Acetyl-5-methylthiophene Chemical Properties

Product Name: 1-(5-Methyl-2-thienyl)ethan-1-one
The MF of 1-(5-Methyl-2-thienyl)ethan-1-one(13679-74-8) is C₇H₈OS.

The MW of 1-(5-Methyl-2-thienyl)ethan-1-one(13679-74-8) is 140.2.
Synonyms: 1-(5-methyl-2-thienyl)ethan-1-one;Ethanone, 1-(5-methyl-2-thienyl)-;Ketone, methyl 5-methyl-2-thienyl;ketone,methyl5-methyl-2-thienyl;1-(5-methyl-2-thienyl)-ethanon;1-(5-Methyl-2-thienyl)ethanone;1-(5-Methyl-thiophen-2-yl)-ethanone;5-Methyl-2-acetylthiophene
Product Categories: Thiophene&Benzothiophene;Thiophens;Building Blocks;Heterocyclic Building Blocks;Thiophenes
Mol File: 13679-74-8.mol
EINECS: 237-181-2
Surface Tension: 37.3 dyne/cm
Density: 1.106 g/ml
Flash Point: 95.8 °C
Enthalpy of Vaporization: 47.16 kJ/mol
Boiling Point: 234.9 °C at 760 mmHg
Vapour Pressure: 0.0517 mmHg at 25°C
BRN: 110854
CAS DataBase Reference: 13679-74-8(CAS DataBase Reference)
NIST Chemistry Reference: 13679-74-8(NIST)

2-Acetyl-5-methylthiophene Toxicity Data With Reference

ipr-mus LD50:230 mg/kg

APFRAD Annales Pharmaceutiques Francaises. 5 (1947),16.

2-Acetyl-5-methylthiophene Safety Profile

A poison by intraperitoneal route. A flammable liquid. When heated to decomposition it emits toxic vapors of SO_x.
Safety information of 1-(5-Methyl-2-thienyl)ethan-1-one(13679-74-8):
Hazard Codes:

Xn,Xi
Risk Statements: 20/21/22
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed ;
Safety Statements: 36/37-22
S36/37:Wear suitable protective clothing and gloves ;
S22:Do not breathe dust ;
WGK Germany: 3
RTECS: OB4972000
Hazard Note: Irritant

2-Acetyl-5-methylthiophene Standards and Recommendations

DOT Classification: 3; Label: Flammable Liquid

2-Acetyl-5-methylthiophene Specification

The 1-(5-Methyl-2-thienyl)ethan-1-one(13679-74-8) is stable under normal temperatures and pressures but incompatible with strong oxidizing agents.Hazardous decomposition products are carbon monoxide, oxides of sulfur, carbon dioxide.

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