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2-METHYLNAPHTHALENE

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2-METHYLNAPHTHALENE

EINECS 202-078-3
CAS No. 91-57-6 Density 1.016 g/cm3
PSA 0.00000 LogP 3.14820
Solubility 0.00246 g/100 mL in water Melting Point 34-36 °C(lit.)
Formula C11H10 Boiling Point 239.9 °C at 760 mmHg
Molecular Weight 142.2 Flash Point 97.8 °C
Transport Information UN 3077 9/PG 3 Appearance White crystalline solid
Safety 26-37/39-61-36/37-24/25-23-53-36 Risk Codes 22-36/37/38-51/53-63-43-23/24/25-45-20/21/22
Molecular Structure Molecular Structure of 91-57-6 (2-Methylnaphthalene) Hazard Symbols HarmfulXn, DangerousN, ToxicT
Synonyms

NSC 3575;b-Methylnaphthalene;

Article Data 332

2-METHYLNAPHTHALENE Chemical Properties

Molecular formula: C11H10
Molar mass: 142.2
EINECS: 202-078-3
Melting point: 34-36 °C
Boiling point: 241-242 °C
Flash point: 208 °F
FreezingPoint: 34.5 °C
density: 1.01
refractive index: 1.6019
storage temp.: 2-8°C
Water Solubility: 0.00246 g/100 mL
The Structure of 2-METHYLNAPHTHALENE(91-57-6):

2-METHYLNAPHTHALENE Uses

2-METHYLNAPHTHALENE(91-57-6) is the raw material for production of vitamin K3, it is also used for production of oral contraceptives, and synthesis of plant growth inhibitors.
2-METHYLNAPHTHALENE(91-57-6) is also used as surfactants, water-reducer, dispersant, etc.

2-METHYLNAPHTHALENE Toxicity Data With Reference

1.   

cyt-hmn:lym 4 mmol/L

   MUREAV    Mutation Research. 208 (1988),155.
2.   

sce-hmn:lym 250 µmol/L

   MUREAV    Mutation Research. 208 (1988),155.
3.   

orl-rat LD50:1630 mg/kg

   85GMAT    Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure Izmerov, N.F., et al.,Moscow, USSR.: Centre of International Projects, GKNT,1982,85.
4.   

ipr-mus LDLo:1000 mg/kg

   TXAPA9    Toxicology and Applied Pharmacology. 61 (1981),185.

2-METHYLNAPHTHALENE Consensus Reports

Reported in EPA TSCA Inventory.

2-METHYLNAPHTHALENE Safety Profile

Moderately toxic by ingestion and intraperitoneal routes. Human mutation data reported. When heated to decomposition it emits acrid smoke and irritating fumes. See also METHYLNAPHTHALENE; 1-METHYLNAPHTHALENE.
Hazard Codes: Xn,N,T
Risk Statements: 22-36/37/38-51/53-63-43-23/24/25-45-20/21/22
22:  Harmful if swallowed 
36/37/38:  Irritating to eyes, respiratory system and skin 
51/53:  Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment
63:  Possible risk of harm to the unborn child 
43:  May cause sensitization by skin contact 
23/24/25:  Toxic by inhalation, in contact with skin and if swallowed 
45:  May cause cancer 
20/21/22:  Harmful by inhalation, in contact with skin and if swallowed 
Safety Statements: 26-37/39-61-36/37-24/25-23-53-36
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
37/39:  Wear suitable gloves and eye/face protection 
61:  Avoid release to the environment. Refer to special instructions safety data sheet 
36/37:  Wear suitable protective clothing and gloves 
24/25:  Avoid contact with skin and eyes 
23:  Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer) 
53:  Avoid exposure - obtain special instruction before use 
36:  Wear suitable protective clothing
RIDADR: UN 3077 9/PG 3
WGK Germany: 2
RTECS: QJ9635000
HazardClass: 9
PackingGroup: III
HS Code: 29029080
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