Product Identification

Product Name

Perhydronaphthalene

Synonyms

1,2,3,4,4a,5,6,7,8,8a-Decahydronaphthalene
Decalin

CAS

91-17-8

Formula

C10H18

Molecular Weight

138.25

EINECS

202-046-9

RTECS

QJ3150000

RTECS Class

Tumorigen; Human Data

Merck

13,2866

Beilstein/Gmelin

878165

Beilstein Reference

3-05-00-00245

EC Class

harmful, corrosive, dangerous for the environment

Physical and Chemical Properties

Appearance

A clear colorless liquid with an aromatic odor.

Solubility in water

Insoluble

Melting Point

-40

Boiling Point

187

Vapor Pressure

0.74 (25 C)

Density

0.8696 g/cm3 (20 C)

Partition Coefficient

4.93

Heat Of Vaporization

41.0 kJ/mol

Heat Of Combustion

-6049 kJ/mol

Usage

Solvent for naphthalene, fats, resins, oils, waxes, instead of turpentine in lacquers, shoe polishes, floor waxes, in motor fuel & lubricants, patent fuel in stoves.

Vapor Density

4.76

Refractive Index

1.4779 (18 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.

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. 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. Keep under a nitrogen blanket. Store in a cool, dry, well-ventilated area away from incompatible substances. After opening, purge container with nitrogen before reclosing. Periodically test for peroxide formation on long-term storage. Addition of water or appropriate reducing materials will lessen peroxide formation.

Handling

Use with adequate ventilation. Ground and bond containers when transferring material. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid ingestion and inhalation. If peroxide formation is suspected, do not open or move container. Do not use if the material has evaporated to dryness. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.

Hazards Identification

Inhalation

Inhalation of high concentrations may cause central nervous system effects characterized by headache, dizziness, unconsciousness and coma. Causes respiratory tract irritation. May cause kidney damage. High concentrations may cause pulmonary edema and lung hemmorrages.

Skin

Prolonged and/or repeated contact may cause irritation and/or dermatitis. Exposure may cause irritation and possible burns.

Eyes

Contact with eyes may cause severe irritation, and possible eye burns.

Ingestion

May cause gastrointestinal irritation with nausea, vomiting and diarrhea. Aspiration of material into the lungs may cause chemical pneumonitis, which may be fatal. May cause blue or greenish-brown urine.

Hazards

Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. May polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.

EC Risk Phrase

R 20 36/37/38

EC Safety Phrase

S 26 36

UN (DOT)

1147

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 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

Prolonged or repeated skin contact may cause defatting and dermatitis.

Poison Class

4

Fire Fighting Measures

Flash Point

58

Autoignition

255

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Forms peroxides of unknown stability. Containers may explode in the heat of a fire. Combustible Liquid. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. For large fires, use water spray or fog. Do NOT use straight streams of water. Cool containers with flooding quantities of water until well after fire is out.

Upper exp. limit

4.9

Lower exp. limit

.7

Fire Potential

HIGHLY FLAMMABLE.

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation.

Stability and Reactivity

Disposal Code

1

Stability

Stable under normal temperatures and pressures. Prolonged exposure to air and sunlight may form unstable peroxides.

Incompatibilities

Strong oxidizing agents. It is volatile on contact with steam.

Decomposition

Carbon monoxide, carbon dioxide.

Combustion Products

Fire will produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

1147

Hazard Class

3

Packing Group

III

HS Code

2902 19 90