Product Name

  • Name

    3-Acetylthianaphthene

  • EINECS
  • CAS No. 26168-40-1
  • Density 1.219g/cm3
  • Solubility
  • Melting Point 61-65oC
  • Formula C10H8 O S
  • Boiling Point 165-170 °C (13 mmHg)
  • Molecular Weight 176.23
  • Flash Point 138°C
  • Transport Information
  • Appearance
  • Safety
  • Risk Codes
  • Molecular Structure Molecular Structure of 26168-40-1 (3-Acetylthianaphthene)
  • Hazard Symbols
  • Synonyms Benzo[b]thiophene,3-(epoxyethyl)- (8CI); Benzo[b]thiophene, 3-oxiranyl- (9CI)
  • PSA 45.31000
  • LogP 3.10390

3-Acetylthianaphthene Chemical Properties

IUPAC Name:  1-(1-benzothiophen-3-yl)ethanone
Synonyms of Methyl 3-thianaphthenyl ketone (CAS NO.1128-05-8):  3-Acetylbenzo(b)thiophene ; 3-Acetylbenzothiophene ; 3-Acetylthianaphthene ; 3-Acetylthionaphthene ; 5-17-10-00173 (Beilstein Handbook Reference) ; AI3-18374 ; BRN 0122587 ; Ketone, methyl 3-thianaphthenyl ; NSC 3226 ; Ethanone, 1-benzo(b)thien-3-yl- ; Ethanone, 1-benzo(b)thien-3-yl- (9CI) ; Ketone, benzo(b)thien-3-yl methyl (8CI) ; Ketone, methyl 3-thianaphthenyl ;
CAS NO: 1128-05-8
Molecular Formula of Methyl 3-thianaphthenyl ketone (CAS NO.1128-05-8): C10H8OS  
Molecular Weight: 176.2349  
H bond acceptors: 1
H bond donors: 0
Freely Rotating Bonds: 1
Polar Surface Area: 45.31 Å2
Index of Refraction: 1.646
Molar Refractivity: 52.5 cm3
Molar Volume: 144.5 cm3
Surface Tension: 47.4 dyne/cm
Density: 1.219 g/cm3
Flash Point: 138 °C
Enthalpy of Vaporization: 54.49 kJ/mol
Boiling Point: 304.5 °C at 760 mmHg
Vapour Pressure: 0.00087 mmHg at 25°C
Molecular Structure:

3-Acetylthianaphthene Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LDLo parenteral 400mg/kg (400mg/kg)   "Summary Tables of Biological Tests," National Research Council Chemical-Biological Coordination Center. Vol. 7, Pg. 690, 1955.

3-Acetylthianaphthene Safety Profile

Safety Statements of Methyl 3-thianaphthenyl ketone (CAS NO.1128-05-8): 24/25
S24/25: Avoid contact with skin and eyes.
RTECS: OB6125000
A poison by parenteral route. A flammable liquid. When heated to decomposition it emits toxic vapors of SOx.

3-Acetylthianaphthene Standards and Recommendations

DOT Classification:  3; Label: Flammable Liquid

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