Product Identification

Product Name

1,2-Dichlorobenzene

Synonyms

1,2-Dichlorobenzene
o-Dichlorobenzol

CAS

95-50-1

Formula

C6H4Cl2

Molecular Weight

147

EINECS

202-425-9

RTECS

CZ4500000

RTECS Class

Agricultural Chemical and Pesticide; Tumorigen; Mutagen; Reproductive Effector; Primary Irritant

Merck

13,3081

Beilstein/Gmelin

606078

Beilstein Reference

4-05-00-00654

EC Index Number

602-034-00-7

EC Class

Harmful; Irritant; Dangerous for the Environment

Physical and Chemical Properties

Appearance

Colorless to pale yellow liquid, pleasant aromatic odor.

Solubility in water

100 mg/L

Melting Point

-17

Boiling Point

180.5

Vapor Pressure

3 (30 C)

Density

1.309 g/cm3 (20 C)

Partition Coefficient

3.43

Heat Of Vaporization

50.23 kJ/mol

Heat Of Combustion

-2964 kJ/mol

Usage

Herbicide.

Saturation Concentration

0.1% at 20 C

Vapor Density

5.1

Odor threshold

50 ppm

Refractive Index

1.5515 (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 immediately.

Inhalation

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

Skin

Get medical aid. Immediately 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

Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Handling

Wash thoroughly after handling. Use only in a well ventilated area. 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. 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 cause liver and kidney damage. May cause drowsiness, unconsciousness, and central nervous system depression.

Skin

Causes irritation with burning pain, itching, and redness.

Eyes

Contact produces irritation, tearing, and burning pain. Vapors cause eye irritation.

Ingestion

Harmful if swallowed. May cause central nervous system depression, kidney damage, and liver damage.

Hazards

Poisonous gases are produced in fire

EC Risk Phrase

R 22 36/37/38 50/53

EC Safety Phrase

S 23 60 61

UN (DOT)

1591

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 prevent skin exposure.

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 exposure may cause adverse reproductive effects. May cause liver and kidney damage. May cause fetal effects.

Exposure limit(s)

NIOSH REL: C 50 ppm (300 mg/m3) OSHA PEL: C 50 ppm (300 mg/m3) IDLH 200 ppm

Poison Class

4

Fire Fighting Measures

Flash Point

66

Autoignition

640

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Combustion generates toxic fumes. Use water spray to keep fire-exposed containers cool. To extinguish fire, use water fog, dry chemical, carbon dioxide, or regular foam. Use agent most appropriate to extinguish fire. Cool containers with flooding quantities of water until well after fire is out.

Upper exp. limit

12

Lower exp. limit

2.2

Fire Potential

Slight; moderate when exposed to heat or flame.

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.

Stability and Reactivity

Disposal Code

2

Stability

Stable at room temperature in closed containers under normal storage and handling conditions.

Incompatibilities

Strong oxidizing agents, acids, aluminum.

Decomposition

Hydrogen chloride, chlorine, carbon monoxide, carbon dioxide.

Combustion Products

Poisonous vapors including hydrogen chloride gas, chlorocarbons, chlorine

Transport Information

UN Number

1591

Hazard Class

6.1

Packing Group

III

HS Code

2903 61 00