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2-Naphthalenethiol

  • Name 2-Naphthalenethiol
  • EINECS202-082-5
  • CAS No. 91-60-1
  • Density1.176 g/cm3
  • PSA38.80000
  • LogP3.12850
  • SolubilitySoluble in alcohol, dipropylene glycol. Soluble in water 34.4 mg/L @ 25°C.
  • Melting Point79-81 °C(lit.)
  • FormulaC10H8S
  • Boiling Point286 °C at 760 mmHg
  • Molecular Weight160.24
  • Flash Point134.2 °C
  • Transport InformationN/A
  • AppearanceAlmost white to cream powder
  • Safety36/37
  • Risk Codes22-20/21/22
  • Molecular Structure
    Molecular Structure of 91-60-1 (2-Naphthalenethiol)
  • Hazard SymbolsHarmfulXnIrritantXi
  • SynonymsHarmfulXnIrritantXi
  • Article Data54

2-Naphthalenethiol Chemical Properties

Structure of 2-Naphthalenethiol (CAS NO.91-60-1):

Molecular Formula: C10H8
Molecular Weight: 160.24
EINECS: 202-082-5
Melting point: 79-81 °C(lit.)
Boiling Point: 286 °C at 760 mmHg 
Flash Point: 134.2 °C 
Index of Refraction: 1.693 
Molar Refractivity: 52.27 cm3 
Molar Volume: 136.1 cm3 
Polarizability: 20.72 10-24 cm
Surface Tension: 48.6 dyne/cm 
Density: 1.176 g/cm3 
Enthalpy of Vaporization: 50.4 kJ/mol 
Vapour Pressure: 0.00467 mmHg at 25°C 
refractive index: 1.589-1.591 
Sensitive: Air Sensitive
Merck: 14,6379
BRN: 636389
IUPAC Name: naphthalene-2-thiol
Synonyms: 2-Naphthyl thiol ; 2-naphthylthiol;beta-Mercaptonaphthalene ; mercaptanbeta-naphtalenique ; naphthalenethiol(non-specificname) ; beta-Naphthyl mercaptan ; beta-naphthylmercaptan ; 2-Metcaptonaphthalene

2-Naphthalenethiol Uses

 2-Naphthalenethiol (CAS NO.91-60-1) is used in the rubber industry for re-living agent.

2-Naphthalenethiol Toxicity Data With Reference

1.    

orl-mus LD50:385 mg/kg

    DCTODJ    Drug and Chemical Toxicology. 3 (1980),249.
2.    

ipr-mus LD50:200 mg/kg

    NTIS**    National Technical Information Service. (Springfield, VA 22161) (Formerly U.S. Clearinghouse for Scientific and Technical Information) No. AD277-689 .

2-Naphthalenethiol Consensus Reports

Reported in EPA TSCA Inventory.

2-Naphthalenethiol Safety Profile

Poison by ingestion and intraperitoneal routes. A mosquito larvicide. When heated to decomposition it emits highly toxic fumes of SOx. See also MERCAPTANS.
The Hazard Codes of 2-Naphthalenethiol (CAS NO.91-60-1): HarmfulXn; IrritantXi
Hazard Note: Harmful/Irritant
The Risk Statements information of 2-Naphthalenethiol (CAS NO.91-60-1):
22:  Harmful if swallowed 
20/21/22:  Harmful by inhalation, in contact with skin and if swallowed 
The Safety Statements information 2-Naphthalenethiol (CAS NO.91-60-1):
36/37:  Wear suitable protective clothing and gloves 
WGK Germany: 3
RTECS: QK3930000
F: 13
HS Code: 29309070

2-Naphthalenethiol Standards and Recommendations

DOT Classification:  3; Label: Flammable Liquid, Poison

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