3-Chloro-2-methyl-1-propene

  • gamma-Chloroisobutylene
  • Methallylchloride
  • beta-Methallyl chloride
Formula
ClCH2C(CH3)=CH2
Structure
Description
A colorless to straw-colored liquid with a sharp penetrating odor.
Uses
Insecticide, in organic syntheses.

Registry Numbers and Inventories.
CAS
563-47-3
EC (EINECS/ELINCS)
209-251-2
EC Index Number
602-032-00-6
EC Class
Highly flammable; Harmful; Corrosive; Sensitising; Dangerous for the Environment
R 11 20/22 34 43 51/53
S 9 16 26 29 36/37/39 61
RTECS
UC8050000
RTECS class
Agricultural Chemical and Pesticide; Tumorigen; Mutagen; Human Data
UN (DOT)
2554
Merck
13,2167
Beilstein/Gmelin
878160
Beilstein Reference
4-01-00-00803
Swiss Giftliste 1
G-2422
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C4H7Cl
Formula mass
90.55
Melting point, °C
-80
Boiling point, °C
72
Vapor pressure, mmHg
102
Vapor density (air=1)
3.12
Density
0.955 g/cm3 (0 C)
Solubility in water
500 mg/L
Viscosity
4.2x10-4 pa.s
Surface tension
25 g/s2
Refractive index
1.4318 (15 C)
Heat of vaporization
33.74 kJ/mol
Heat of combustion
-2416 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. Refrigerator/flammables.
Handling
Wash thoroughly after 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 contact with heat, sparks and flame. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Protection
Eyes: Wear chemical goggles. 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. Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions.
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.
Disposal code
2
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents, strong bases.
Decomposition
Hydrogen chloride, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
-18
Autoignition, °C
540
Upper exp. limit, %
10.4
Lower exp. limit, %
2.2
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. Extremely flammable liquid. Containers may explode in the heat of a fire. Will be easily ignited by heat, sparks or flame. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective. Use agent most appropriate to extinguish fire. Do NOT use straight streams of water.
Fire potential
Flammable, dangerous fire risk.
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
Irritating and toxic hydrogen chloride and phosgene vapors may be formed.
Health
1
 
Flammability
3
 
 
Reactivity
1
 

Health.
Exposure limit(s)
OSHA: Possible Select carcinogen
Carcinogin
N-2, CP65
Poison_Class
2
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Ingestion
May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated. May be harmful if swallowed.
   Inhalation
May cause respiratory tract irritation. May be harmful if inhaled. Vapors may cause dizziness or suffocation.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Get medical aid immediately. 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. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Remove contaminated clothing and shoes.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
2554
Response guide
Hazard class
3
Packing Group
II
 
USCG CHRIS Code
MCL
 
36 Halogenated hydrocarbons
HS Code
2903 29 00
 
Std. Transport #
4908149