Product Identification

Product Name

1,5-Difluoro-2,4-dinitrobenzene

Synonyms

1,3-Difluoro-4,6-dinitrobenzene
1,5-Difluoro-2,4-dinitrobenzene
4,6-Difluoro-1,3-dinitrobenzene
DFDNB

CAS

327-92-4

Formula

C6H2F2N2O4

Molecular Weight

204.09

EINECS

206-324-0

RTECS

CZ5663200

RTECS Class

Other

Beilstein/Gmelin

1883116

Beilstein Reference

4-05-00-00743

EC Class

toxic

Physical and Chemical Properties

Appearance

Light yellow liquid.

Melting Point

74 - 76

Boiling Point

132 (2 torr)

Density

1.86 g/cm3

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

Immediately 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 tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Handling

Wash thoroughly after handling. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Do not ingest or inhale.

Hazards Identification

Ingestion

Harmful if swallowed. The toxicological properties of this substance have not been fully investigated. May cause central nervous system effects.

Inhalation

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

Skin

Causes skin irritation.

Eyes

Causes eye irritation.

Hazards

Contact with metals may evolve flammable hydrogen gas.

EC Risk Phrase

R 22 23/25 33 36/38

EC Safety Phrase

S 26 36/37/39 45

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.

Fire Fighting Measures

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 chemical foam.

Fire Potential

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic 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. Provide ventilation.

Stability and Reactivity

Stability

Stable, however may violently decompose at temperatures above 175C.

Incompatibilities

Strong bases - strong oxidizing agents.

Decomposition

Carbon monoxide, oxides of nitrogen, carbon dioxide, hydrogen fluoride.

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