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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
Hazard SymbolsXnXi
SynonymsXnXi
Article Data54

2-Naphthalenethiol Chemical Properties

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

Molecular Formula: C₁₀H₈S
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 cm³
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 SO_x. See also MERCAPTANS.
The Hazard Codes of 2-Naphthalenethiol (CAS NO.91-60-1): Harmful Xn; Xi
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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