1,1-Dichloropropane

  • Propylidene chloride
  • Propylidene dichloride
Formula
CH3CH2CHCl2
Structure
Description
Colorless liquid with a sweet, characteristic odor.
Uses
Solvent for pesticide formulations.

Registry Numbers and Inventories.
CAS
78-99-9
EC (EINECS/ELINCS)
201-165-3
RTECS
TX9450000
RTECS class
Primary Irritant
UN (DOT)
1992
Merck
12,8046
Beilstein/Gmelin
1731152
Beilstein Reference
4-01-00-00195
Austrailia AICS
Listed

Properties.
Formula
C3H6Cl2
Formula mass
112.99
Boiling point, °C
88
Vapor pressure, mmHg
68 (25 C)
Vapor density (air=1)
3.90
Critical temperature
286
Critical pressure
4234
Density
1.143 g/cm3 (10 C)
Solubility in water
Insoluble
Surface tension
29 g/s2
Refractive index
1.4288 (18 C)
Dipole moment
2.06 D
Partition coefficient, pKow
2.34
Heat of vaporization
31.39 kJ/mol
Heat of combustion
-1733 kJ/mol

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Rubber gloves, self-contained breathing apparatus, coveralls or laboratory coat.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Make no contact with the spilled material. Fully encapsulating, vapor protective clothing should be worn for spills and leaks with no fire. ELIMINATE all ignition sources and ground all equipment. Stop leak if you can do it without risk. A vapor suppressing foam may be used to reduce vapors. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. Use clean non-sparking tools to collect absorbed material.
Stability
Based on the behavior of 1,2-dichloropropane, explosions may be caused by contact with strong oxidizers or strong acids. An explosion hazard may occur if material enters confined spaces such as sewers.
Incompatibilities
Can react with some metals to form dangerous products Incompatible with strong oxidizing and reducing agents Incompatible with many amines, nitrides, azo/diazo compounds, alkali metals, and epoxides.
Decomposition
Decomposes on heating producing HCl and phosgene.

Fire.
Flash Point,°C
21
Autoignition, °C
557
Upper exp. limit, %
14.5
Lower exp. limit, %
3.1
Fire fighting
Fire Extinguishing Agents: Foam, carbon dioxide, dry chemical.
Fire potential
Based on the 1,2-isomer, other dichloropropanes are probably quite flammable.
Hazards
Flashback along vapor trail may occur.
Combustion products
Emits fumes of phosgene

Health.
Exposure effects
Very high concentrations are depressant in animals.
   Ingestion
See inhalation.
   Inhalation
At high concentrations the vapors are irritating to the respiratory tract.
   Skin
Redness, pain.
   Eyes
CONJUNCTIVITIS - This chemical is moderately irritating to the eyes but is not expected to cause serious or permanent injury.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Remove to fresh air. If breathing has stopped, give artificial respiration.
   Skin
Wash thoroughly with soap and water.
   Eyes
Flush with running water for 15 minutes.

Transport.
UN number
1992
Response guide
Hazard class
3
Packing Group
I; II; III
 
USCG CHRIS Code
DPB
 
36 Halogenated hydrocarbons
IMO Chemical Code
17
IMO Pollution Category
C
IMO Hazard code
S/P