Dipentene

  • Limonene, inactive
  • p-Mentha-1,8-diene
Formula
C10H16
Structure
Description
Colorless liquid, lemon-like odor.
Uses
Paintermediate brush cleanser & preservative.

Registry Numbers and Inventories.
CAS
138-86-3
EC (EINECS/ELINCS)
205-341-0
EC Index Number
601-029-00-7
EC Class
Flammable; Irritant; Sensitising; Dangerous for the Environment
R 10 38 43 50/53
S 24 37 60 61
RTECS
OS8100000
RTECS class
Primary Irritant
UN (DOT)
2052
Merck
12,5518
Beilstein/Gmelin
774123
Beilstein Reference
4-05-00-00440
EPA OPP
79701
Swiss Giftliste 1
G-157436
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
-89
Boiling point, °C
176
Vapor pressure, mmHg
1.5 (21 C)
Vapor density (air=1)
4.7
Saturation Concentration
2800 ppm at 20 C (calc.)
Critical temperature
386
Critical pressure
27.1
Density
0.8462 g/cm3 (20 C)
Solubility in water
Insoluble
Surface tension
26 g/s2
Refractive index
1.4727 (19 C)
Partition coefficient, pKow
4.232
Heat of vaporization
39.5 kJ/mol
Heat of combustion
-5506 kJ/mol

Hazards and Protection.
Storage
Store at room temperature. Venting: safety relief.
B3 D2B
Handling
Containers of this material may be hazardous when emptied. Since emptied containers retain product residues (vapor, liquid, and/or solid), all hazard precautions given in the data sheet must be observed. All five-gallon pails and larger metal containers, including tank cars and tank trucks, should be grounded and/or bonded when material is transferred.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Use water spray to knock-down vapors.
Disposal code
1
Stability
Stable.
Incompatibilities
May react vigorously with strong oxidizing agents May react exothermically with reducing agents to release hydrogen gas.
Decomposition
When heated to decomposition it emits acrid smoke and fumes.

Fire.
Flash Point,°C
43
Autoignition, °C
255
Upper exp. limit, %
6.1
Lower exp. limit, %
0.7
Fire fighting
Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may be ineffective. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use foam, dry chemical, or carbon dioxide.
Fire potential
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
Hazards
Containers may explode.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
0
 
Flammability
2
 
 
Reactivity
0
 

Health.
Poison_Class
4
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Ingestion
Swallowing small amounts of this material during normal handling is not likely to cause harmful effects. Swallowing large amounts may be harmful. This material can get into the lungs during swallowing or vomiting. This results in lung inflammation and other lung injury.
   Inhalation
Aspiration might produce lipoid pneumonitis.
   Skin
Dermal irritation and sensitization may occur. Percutaneous absorption may occur.
   Eyes
See Skin.

First aid
 
   Ingestion
Induce vomiting; call physician.
   Inhalation
Remove victim from contaminated area; administer artificial respiration if necessary; call physician.
   Skin
Wash with soap and water.
   Eyes
Flush with water for 15 min.; call physician.

Transport.
UN number
2052
Response guide
Hazard class
3
Packing Group
III
 
USCG CHRIS Code
DPN
 
HS Code
2902 19 10
 
Std. Transport #
4912049
 
IMO Chemical Code
17
IMO Pollution Category
C
IMO Hazard code
P