Product Identification

Product Name

2-Methylnaphthalene

Synonyms

beta-Methylnaphthalene

CAS

91-57-6

Formula

C11H10

Molecular Weight

142.19999999999999

EINECS

202-078-3

RTECS

QJ9635000

RTECS Class

Tumorigen; Mutagen

Beilstein/Gmelin

906859

Beilstein Reference

4-05-00-01693

EC Class

harmful, dangerous for the environment

Physical and Chemical Properties

Appearance

White crystalline solid.

Solubility in water

30 mg/L

Melting Point

32 - 35

Boiling Point

241

Vapor Pressure

0.03 (25 C)

Density

1.0058 g/cm3 (20 C)

Partition Coefficient

3.86

Heat Of Vaporization

52.8 kJ/mol

Heat Of Combustion

-5794 kJ/mol

Usage

Organic synth, insecticides.

Vapor Density

1

Odor threshold

10 ppb

Refractive Index

1.6015 (40 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. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.

Eyes

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 container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

Inhalation of dust may cause respiratory tract irritation.

Skin

Causes skin irritation. May cause photosensitization in certain individuals.

Eyes

Causes eye irritation.

Ingestion

May be harmful if swallowed.

Hazards

Containers may explode when heated.

EC Risk Phrase

R 22 36/37/38

EC Safety Phrase

S 26 36/37/39

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.

Exposure limit(s)

OEL-RUSSIA:STEL 20 mg/m3

Poison Class

3

Fire Fighting Measures

Flash Point

98

Autoignition

488

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Dusts at sufficient concentrations can form explosive mixtures with air. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.

Upper exp. limit

5.3

Lower exp. limit

.8

Fire Potential

This chemical is combustible.

Accidental Release Measures

Small spills/leaks

Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Disposal Code

3

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents.

Decomposition

Carbon monoxide, irritating and toxic fumes and gases, 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