Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
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1-Methylnaphthalene(90-12-0)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

Product Name
1-Methylnaphthalene
Synonyms
alpha-Methylnaftalen
alpha-Methylnaphthalene
CAS
90-12-0
Formula
C11H10
Molecular Weight
142.19999999999999
EINECS
201-966-8
RTECS
QJ9630000
RTECS Class
Mutagen
Beilstein/Gmelin
506793
Beilstein Reference
4-05-00-01687
EC Class
harmful, dangerous for the environment

Physical and Chemical Properties

Appearance
Colorless liquid.
Solubility in water
30 mg/L
Melting Point
-33 to -32
Boiling Point
240
Vapor Pressure
0.05 (25 C)
Density
1.022 g/cm3 (20 C)
pKa/pKb
37(at 25℃) (pKa)
Partition Coefficient
3.87
Heat Of Vaporization
46.0 kJ/mol
Heat Of Combustion
-5784 kJ/mol
Usage
Organic synthesis.
Saturation Concentration
71 ppm at 25 C (calculated)
Vapor Density
4.91
Odor threshold
0.02 ppm.
Refractive Index
1.6170 (20 C)

First Aid Measures

Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Skin
Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Remove contaminated clothing and shoes.
Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage

Storage
Keep away from heat and flame. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.

Hazards Identification

Inhalation
Causes respiratory tract irritation.
Skin
Causes skin irritation.
Eyes
Causes eye irritation.
Ingestion
May be harmful if swallowed. Causes digestive tract irritation.
Hazards
Containers may explode when heated.
EC Risk Phrase
R 22 36/37/38 51/53
EC Safety Phrase
S 26 36/37/39 60 61
UN (DOT)
3082

Exposure Controls/Personal Protection

Personal Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Exposure Effects
Hemolytic anemia has developed in neonates following in utero exposure. In utero exposure causes cataracts in rats.
Poison Class
3

Fire Fighting Measures

Flash Point
82
Autoignition
529
Fire Fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Combustible Liquid. Containers may explode when heated. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Use water spray to cool fire-exposed containers.
Upper exp. limit
5.3
Lower exp. limit
.8
Fire Potential
This chemical is combustible.

Accidental Release Measures

Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Wash area with soap and water. Clean up spills immediately, using the appropriate protective equipment. Provide ventilation.

Stability and Reactivity

Disposal Code
1
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, carbon dioxide.
Combustion Products
Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number
3082
Hazard Class
9
Packing Group
III
HS Code
2902 90 80
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