2-Methylnaphthalene

CAS No. 91-57-6

Formula: C11H10
Basic Info

2-Methylnaphthalene is a polycyclic aromatic hydrocarbon (PAH). Several enzyme biodegrate 2-Naphthalene in anaerobic condition. ; On February 22, 2014, NASA announced a greatly upgraded database for detecting and monitoring PAHs, including 2-Methylnaphthalene, in the universe. According to NASA scientists, over 20% of the carbon in the universe may be associated with PAHs, possible starting materials for the formation of life. PAHs seem to have been formed shortly after the Big Bang, are abundant in the universe, and are associated with new stars and exoplanets.

Formula
C11H10
Molecular Weight
142.197
Exact Mass
142.078
LogP
3.1482
PSA
0
Synonyms

NAPHTHALENE, 2-METHYL-

beta-Methylnaphthalene

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Properties
Appearance & Physical State
solid
Density
1.01
Boiling Point
241-242ºC
Melting Point
32-36ºC
Freezing Point
34.5℃
Flash Point
97ºC
Refractive Index
1.6019
Water Solubility
0.00246 g/100 mL
Stability
Stable. Incompatible with strong oxidizing agents.
Storage Condition
2-8ºC
Safety Info
RTECS
QJ9635000
Safety Statements
S61
WGK Germany
2
Risk Statements
R22; R51/53
HS Code
29029080
RIDADR
UN 3077
Hazard Class
9
Packing Group
III
Hazard Codes
Spectrum
NMR Spectrum 1H NMR : 400 MHz in CDCl3
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IR Spectrum IR : KBr disc
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Mass Spectrum Mass spectrum (electron ionization)
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Raman Spectrum Raman : 4880 A,100M,powder
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ESR Spectrum ESR : ANION RADICAL, REDUCTION WITH NA IN THF, -76C
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UV Spectrum UV/Visible spectrum
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Toxicity
ACUTE TOXICITY DATA
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Type of Test
LD50 - Lethal dose, 50 percent kill
Exposure Route
Oral
Species Observed
Rodent - rat
Dose/Duration
1630 mg/kg
Toxic Effects
Details of toxic effects not reported other than lethal dose value--
Reference
Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure, Izmerov, N.F., et al., Moscow, Centre of International Projects, GKNT, 1982 Volume(issue)/page/year: -,85,1982
ACUTE TOXICITY DATA
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Type of Test
LDLo - Lowest published lethal dose
Exposure Route
Intraperitoneal
Species Observed
Rodent - mouse
Dose/Duration
1 gm/kg
Toxic Effects
Lungs, Thorax, or Respiration--structural or functional change in trachea or bronchi<br>Lungs, Thorax, or Respiration--other changes
Reference
Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 61,185,1981
TUMORIGENIC DATA
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Type of Test
TDLo - Lowest published toxic dose
Exposure Route
Oral
Species Observed
Rodent - mouse
Dose/Duration
28500 mg/kg/81W-C
Toxic Effects
Tumorigenic--equivocal tumorigenic agent by RTECS criteria<br>Lungs, Thorax, or Respiration--tumors
Reference
Fundamental and Applied Toxicology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1981- Volume(issue)/page/year: 36,90,1997

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