Product Identification

Product Name

3-Chloro-2-methylpropene

Synonyms

3-Chloro-2-methylprop-1-ene
beta-Methallyl chloride
gamma-Chloroisobutylene
Isobutenyl chloride
Methallylchloride

CAS

563-47-3

Formula

C4H7Cl

Molecular Weight

90.55

EINECS

209-251-2

RTECS

UC8050000

RTECS Class

Agricultural Chemical and Pesticide; Tumorigen; Mutagen; Human Data

Merck

13,2167

Beilstein/Gmelin

878160

Beilstein Reference

4-01-00-00803

EC Index Number

602-032-00-6

EC Class

Highly flammable; Harmful; Corrosive; Sensitising; Dangerous for the Environment

Physical and Chemical Properties

Appearance

A colorless to straw-colored liquid with a sharp penetrating odor.

Solubility in water

500 mg/L

Melting Point

-80

Boiling Point

72

Vapor Pressure

102

Density

0.955 g/cm3 (0 C)

Heat Of Vaporization

33.74 kJ/mol

Heat Of Combustion

-2416 kJ/mol

Usage

Insecticide, in organic syntheses.

Vapor Density

3.12

Refractive Index

1.4318 (15 C)

First Aid Measures

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.

Handling and Storage

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.

Hazards Identification

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.

Ingestion

May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated. May be harmful if swallowed.

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.

EC Risk Phrase

R 11 20/22 34 43 51/53

EC Safety Phrase

S 9 16 26 29 36/37/39 61

UN (DOT)

2554

Exposure Controls/Personal Protection

Personal 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.

Exposure Effects

The toxological properties of this substance have not been fully investigated.

Exposure limit(s)

OSHA: Possible Select carcinogen

Poison Class

2

Fire Fighting Measures

Flash Point

-18

Autoignition

540

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.

Upper exp. limit

10.4

Lower exp. limit

2.2

Fire Potential

Flammable, dangerous fire risk.

Accidental Release Measures

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 and Reactivity

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.

Combustion Products

Irritating and toxic hydrogen chloride and phosgene vapors may be formed.

Transport Information

UN Number

2554

Hazard Class

3

Packing Group

II

HS Code

2903 29 00