Product Identification

Product Name

1,2,4-Trichlorobenzene

Synonyms

1,2,4-Trichlorobenzol
Hostetex L-pec
unsym-Trichlorobenzene

CAS

120-82-1

Formula

C6H3Cl3

Molecular Weight

181.45

EINECS

204-428-0

RTECS

DC2100000

RTECS Class

Tumorigen; Mutagen; Reproductive Effector; Primary Irritant

Merck

12,9760

Beilstein/Gmelin

956819

Beilstein Reference

4-05-00-00664

EC Index Number

602-087-00-6

EC Class

Harmful; Irritant; Dangerous for the Environment

Physical and Chemical Properties

Appearance

Colorless liquid or crystalline solid with an aromatic odor.

Solubility in water

30 mg/L

Melting Point

17

Boiling Point

214.4

Vapor Pressure

.5

Density

1.4827 g/cm3 (0 C)

Partition Coefficient

4.02

Heat Of Vaporization

54.68 kJ/mol

Heat Of Combustion

-2798 kJ/mol

Usage

Solvent in chemical manufacturing, dyes & intermediates, dielectric fluid, synthetic transformer oils, lubricants, heat-transfer medium, insecticides.

Saturation Concentration

1316 ppm (0.1%) at 20 C (calculated)

Vapor Density

6.26

Odor threshold

3 ppm

Refractive Index

1.572 (20 C)

First Aid Measures

Ingestion

Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.

Skin

Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.

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 sources of ignition. Store in a cool, dry place. Store in a tightly closed container.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

May cause respiratory tract irritation.

Skin

Causes skin irritation. May cause dermatitis.

Eyes

May cause severe eye irritation.

Ingestion

Harmful if swallowed. May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause a narcotic effect with possible coma. May cause central nervous system depression.

Hazards

When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.

EC Risk Phrase

R 22 38 50/53

EC Safety Phrase

S 23 37/39 60 61

UN (DOT)

2321

Exposure Controls/Personal Protection

Personal Protection

Eyes: 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 minimize contact with skin.

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

Prolonged or repeated skin contact may cause dermatitis. May cause liver and kidney damage.

Exposure limit(s)

NIOSH REL: C 5 ppm (40 mg/m3)

Poison Class

4

Fire Fighting Measures

Flash Point

99

Autoignition

571

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. Will burn if involved in a fire. Use water spray to keep fire-exposed containers cool. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Combustible material; may burn but does not ignite readily. Extinguishing media: For small fires, use dry chemical, carbon dioxide, halon, or water spray. Do NOT get water inside containers. For large fires, use dry chemical, carbon dioxide, alcohol-resistant foam, or water spray. Cool containers with flooding quantities of water until well after fire is out.

Upper exp. limit

6.6

Lower exp. limit

2.5

Fire Potential

Nonflammable but gives off combustible fumes.

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. Scoop up with a nonsparking tool, then place into a suitable container for disposal. Remove all sources of ignition. Provide ventilation. Do not get water inside containers.

Stability and Reactivity

Disposal Code

2

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents.

Decomposition

Hydrogen chloride, phosgene, carbon monoxide, carbon dioxide.

Combustion Products

May contain toxic hydrogen chloride and phosgene.

Transport Information

UN Number

2321

Hazard Class

6.1

Packing Group

III

HS Code

2903 69 90