Pinene (alpha)

  • 2,6,6-Trimethylbicyclo[3,1,1]hept-2-ene
  • 2-Pinene
  • alpha-Pinene
  • Pin-2(3)-ene
Formula
C10H16
Structure
Description
Colorless, mobile liquid. Characteristic odor of pine.
Uses
Manufacture of camphor, insecticides, solvents, plasticizers, perfume bases, synthetic pine oil.

Registry Numbers and Inventories.
CAS
80-56-8
EC (EINECS/ELINCS)
201-291-9
RTECS
DT7000000
RTECS class
Primary Irritant
UN (DOT)
2368
Merck
12,7599
Beilstein/Gmelin
3194807
Beilstein Reference
4-05-00-00456
EPA OPP
67004
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C10H16
Formula mass
136.24
Melting point, °C
-55
Boiling point, °C
155
Vapor pressure, mmHg
3.5 (25 C)
Vapor density (air=1)
4.7
Density
0.8592 g/cm3 (20 C)
Solubility in water
Insoluble
Surface tension
25.8 g/s2 (30 C)
Refractive index
1.4664 (20 C)
Partition coefficient, pKow
4.83
Heat of vaporization
37.8 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. 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 contact with heat, sparks and flame. Avoid ingestion and inhalation. Use with adequate ventilation. 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 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.
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. A vapor suppressing foam may be used to reduce vapors.
Stability
Stable at room temperature in closed containers under normal storage and handling conditions.
Incompatibilities
Nitric acid (explosive reaction), sulfuric acid, strong oxidizing agents.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
33
Autoignition, °C
255
Upper exp. limit, %
6.6
Lower exp. limit, %
0.8
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. Use water spray to keep fire-exposed containers cool. Water may be ineffective. Material is lighter than water and a fire may be spread by the use of water. Containers may explode in the heat of a fire. May polymerize explosively when involved in a fire. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective. For large fires, use water spray, fog or alcohol-resistant foam. Do NOT use straight streams of water.
Fire potential
Flammable liquid. A dangerous fire hazard when exposed to heat, flame, or oxidizing materials.
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.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
1
 
Flammability
3
 
 
Reactivity
0
 

Health.
Exposure effects
May cause kidney damage.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause kidney damage. May cause central nervous system effects. Human fatalities have been reported from acute poisoning.
   Inhalation
Causes respiratory tract irritation. Irritation may lead to chemical pneumonitis and pulmonary edema. Vapors may cause dizziness or suffocation.
   Skin
Causes severe skin irritation.
   Eyes
Causes severe eye irritation.

First aid
 
   Ingestion
Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration.
   Skin
Get medical aid. 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. Do NOT allow victim to rub or keep eyes closed.

Transport.
UN number
2368
Response guide
Hazard class
3
Packing Group
III
 
USCG CHRIS Code
PIO (PIN)
 
IMO Chemical Code
17
IMO Pollution Category
A
IMO Hazard code
P