Product Identification

Product Name

1,2,4-Trichloro-3-methylbenzene

Synonyms

1,2,4-Trichloro-3-methylbenzene
1-Methyl-2,3,6-trichlorobenzene

CAS

2077-46-5

Formula

C7H5Cl3

Molecular Weight

195.47

EINECS

218-202-4

RTECS

XT9300000

RTECS Class

Other

Beilstein/Gmelin

2327397

Beilstein Reference

4-05-00-00819

Physical and Chemical Properties

Solubility in water

Insoluble

Melting Point

46

Boiling Point

236 - 240

Vapor Pressure

0.07 (25 C)

Partition Coefficient

4.28

Heat Of Vaporization

45.4 kJ/mol

First Aid Measures

Ingestion

Get medical aid. Wash mouth out with water.

Inhalation

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.

Eyes

Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Handling and Storage

Storage

Store in a cool, dry place. Keep container closed when not in use.

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.

Hazards Identification

Inhalation

Vapors may cause dizziness or suffocation. May cause toxic effects. May irritate or burn.

Skin

May irritate or burn. May cause toxic effects if absorbed through the skin.

Eyes

See Skin.

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.

UN (DOT)

2238

Exposure Controls/Personal Protection

Personal Protection

Wear protective gloves and clothing and safety goggles.

Respirators

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Exposure Effects

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

Fire Fighting Measures

Flash Point

147

Fire Fighting

Use of water spray when fighting fire may be inefficient. Small Fires: Dry chemical, carbon dioxide, water spray or regular foam. Large Fires: Water spray, fog or regular foam. Do not use straight streams.

Fire Potential

HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.

Accidental Release Measures

Small spills/leaks

Make no contact with the spilled material. 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 and Reactivity

Incompatibilities

Incompatible with strong oxidizers.

Stability

Stable under normal temperatures and pressures.

Decomposition

Irritating and toxic fumes and gases.

Combustion Products

Fire will produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

2238

Hazard Class

3

Packing Group

III