Product Identification

Product Name

3,4-DCNB

Synonyms

1-Nitro-3,4-dichlorobenzene
3,4-Dichloronitrobenzene
Benzene, 1,2-dichloro-4-nitro-
DCNB

CAS

99-54-7

Formula

C6H3Cl2NO2

Molecular Weight

192

EINECS

202-764-2

RTECS

CZ5250000

RTECS Class

Mutagen; Reproductive Effector; Primary Irritant

Beilstein/Gmelin

2210335

Beilstein Reference

0-10-00-00624

EC Class

harmful, irritant, dangerous for the environment

Physical and Chemical Properties

Appearance

Colorless to tan needle-like crystals.

Solubility in water

150 mg/L

Melting Point

38 - 41

Boiling Point

256

Vapor Pressure

.01

Density

1.4558 g/cm3 (20 C)

Usage

Chemical intermediate for herbicides (eg, propanil) and insecticides & dye intermediates.

Vapor Density

6.63

Saturation Concentration

18 ppm (0.0018%) at 20 C (calculated)

First Aid Measures

Ingestion

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

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.

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

Store in a cool, dry place. Store in a tightly closed container.

Handling

Wash thoroughly after handling. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Hazards Identification

Ingestion

May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed.

Inhalation

May cause respiratory tract irritation.

Skin

Causes skin irritation.

Eyes

Causes eye irritation.

Hazards

Contact with metals may evolve flammable hydrogen gas.

EC Risk Phrase

R 20/21/22 33 36 51/53

EC Safety Phrase

S 26 36/37/39 61

UN (DOT)

2811

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.

Poison Class

2

Fire Fighting Measures

Flash Point

123

Autoignition

420

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire use water spray, dry chemical, carbon dioxide, or appropriate foam.

Upper exp. limit

8.4

Lower exp. limit

2.1

Fire Potential

This chemical is combustible.

Accidental Release Measures

Small spills/leaks

Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal.

Stability and Reactivity

Disposal Code

3

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents, strong bases.

Decomposition

Hydrogen chloride, nitrogen oxides, carbon monoxide, carbon dioxide, nitrogen.

Combustion Products

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

Transport Information

UN Number

2811

Hazard Class

6.1

Packing Group

I; II; III

HS Code

2904 90 85