Product Identification

Product Name

Naphthalene

CAS

91-20-3

Formula

C10H8

Molecular Weight

128.16

EINECS

202-049-5

RTECS

QJ0525000

RTECS Class

Agricultural Chemical and Pesticide; Tumorigen; Mutagen; Reproductive Effector; Human Data; Primary Irritant

Merck

12,6457

Beilstein/Gmelin

1421310

Beilstein Reference

4-05-00-01655

EC Index Number

601-052-00-2

EC Class

Harmful; Dangerous for the Environment

Physical and Chemical Properties

Appearance

White crystalline solid with distinctive odor of mothballs or coal tar.

Solubility in water

0.03 g/L

Melting Point

74

Boiling Point

218

Vapor Pressure

0.078 (25 C)

Density

1.145 g/cm3 (20 C)

Partition Coefficient

3.3

Heat Of Vaporization

43.5 kJ/mol

Heat Of Combustion

-4973 kJ/mol

Usage

Manufacture of phthalic & anthranilic acids, naphthols, naphthylamines, sulfonic acid, synthetic resins, celluloid, lampblack, smokeless powder, hydronaphthalenes, insecticide.

Saturation Concentration

100 ppm at 25 C

Vapor Density

4.42

Odor threshold

0.084 ppm

Refractive Index

1.58212 (20 C)

First Aid Measures

Ingestion

Do NOT induce vomiting. 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 breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.

Skin

Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.

Eyes

Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Handling and Storage

Storage

Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from moisture.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Do not breathe dust, vapor, mist, or gas. Keep container tightly closed. Do not ingest or inhale. Use only in a chemical fume hood.

Hazards Identification

Inhalation

May be fatal if inhaled. Causes respiratory tract irritation. May cause salivation, nausea, vomiting, abdominal pain, fever, and labored breathing. Readily absorbed when inhaled.

Skin

Causes mild skin irritation. May be absorbed through the skin in harmful amounts. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.

Eyes

Causes mild eye irritation. This substance is retinotoxic and systemic absorption of its vapors ab ove 15 ppm, may cause cataracts, optical neuritis, injuries to the cor nea and marked eye irritation.

Ingestion

Harmful if swallowed. May cause liver and kidney damage. May cause methemoglobinemia, cyanosis, convulsions, and death. May cause severe digestive tract irritation with abdominal pain, nausea, vomiting and diarrhea. Ingestion of large quantities may cause severe hemolytic anemia and hemoglobinuria.

Hazards

May be ignited by friction, heat, sparks or flames. Some may burn rapidly with flare burning effect. Powders, dusts, shavings, borings, turnings or cuttings may explode or burn with explosive violence. Substance may be transported in a molten form. May re-ignite after fire is extinguished.

EC Risk Phrase

R 22 50/53

EC Safety Phrase

S 36/37 60 61

UN (DOT)

2304

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

A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.

Exposure Effects

Prolonged or repeated skin contact may cause dermatitis. May cause liver and kidney damage. May cause anemia and other blood cell abnormalities. Animal studies have reported that fetal effects/abnormalities may occur when maternal toxicity is seen. Effects may be delayed. Chronic exposure may cause lung damage. Laboratory experiments have resulted in mutagenic effects. Chronic exposure may cause corneal injury, optical neuritis, blurred vision, and possible cataract formation.

Exposure limit(s)

NIOSH REL: TWA 10 ppm (50 mg/m3) ST 15 ppm (75 mg/m3) OSHA PEL: TWA 10 ppm (50 mg/m3) IDLH 250 ppm

Poison Class

3

Fire Fighting Measures

Flash Point

80

Autoignition

540

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Water runoff can cause environmental damage. Dike and collect water used to fight fire. Use water spray to keep fire-exposed containers cool. Dust can be an explosion hazard when exposed to heat or flame. May be ignited by friction, heat, sparks, or flame. May re-ignite after fire is extinguished. Containers may explode when heated. Extinguishing media: Use dry sand or earth to smother fire. Water or foam may cause frothing. Cool containers with flooding quantities of water until well after fire is out. Use dry chemical, carbon dioxide, or appropriate foam.

Upper exp. limit

5.9

Lower exp. limit

.9

Fire Potential

Flammable/combustible material.

Accidental Release Measures

Small spills/leaks

Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Scoop up with a nonsparking tool, then place into a suitable container for disposal. Avoid generating dusty conditions. Remove all sources of ignition.

Stability and Reactivity

Disposal Code

3

Incompatibilities

Oxidizing agents, chromium trioxide, chromic anhydride, dinitrogen pentaoxide, mineral acids, moisture, stong alkalies, alumiunum chloride + benzoyl chloride.

Stability

Stable at room temperature in closed containers under normal storage and handling conditions. Volatile in steam.

Decomposition

Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Combustion Products

Toxic vapors given off in a fire.

Transport Information

UN Number

2304

Hazard Class

4.1

Packing Group

III

HS Code

2902 90 10