trans-Decahydronaphthalene

  • Decalin
Formula
C10H18
Structure
Description
A clear colorless liquid with an aromatic odor.
Uses
Solvent for naphthalene, fats, resins, oils, waxes, instead of turpentine in lacquers, shoe polishes, floor waxes, in motor fuel & lubricants, patent fuel in stoves.

Registry Numbers and Inventories.
CAS
91-17-8
EC (EINECS/ELINCS)
202-046-9
EC Class
harmful, corrosive, dangerous for the environment
R 20 36/37/38
RTECS
QJ3150000
RTECS class
Tumorigen; Human Data
UN (DOT)
1147
Merck
13,2866
Beilstein/Gmelin
878165
Beilstein Reference
3-05-00-00245
Swiss Giftliste 1
G-1866
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C10H18
Formula mass
138.25
Melting point, °C
-40
Boiling point, °C
187
Vapor pressure, mmHg
0.74 (25 C)
Vapor density (air=1)
4.76
Density
0.8696 g/cm3 (20 C)
Solubility in water
Insoluble
Viscosity
1.31 cp (57 C)
Surface tension
30 g/s2
Refractive index
1.4779 (18 C)
Partition coefficient, pKow
4.93
Heat of vaporization
41.0 kJ/mol
Heat of combustion
-6049 kJ/mol

Hazards and Protection.
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.
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.
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.
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.

Fire.
Flash Point,°C
58
Autoignition, °C
255
Upper exp. limit, %
4.9
Lower exp. limit, %
0.7
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.
Fire potential
HIGHLY FLAMMABLE.
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.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.
Health
1
 
Flammability
2
 
 
Reactivity
0
 

Health.
Poison_Class
4
Exposure effects
Prolonged or repeated skin contact may cause defatting and dermatitis.
   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.
   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.

First aid
 
   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.

Transport.
UN number
1147
Response guide
Hazard class
3
Packing Group
III
 
USCG CHRIS Code
DHN
 
33 Misc. hydrocarbon mixtures
HS Code
2902 19 90
 
Std. Transport #
4912067
 
IMO Chemical Code
18
IMO Pollution Category
D