Product Identification

Product Name

DNFB

Synonyms

1,2,4-Fluorodinitrobenzene
2,4-Dinitro-1-fluorobenzene
2,4-Dinitrofluorobenzene
Dinitrofluorobenzene
DNFB

CAS

70-34-8

Formula

C6H3FN2O4

Molecular Weight

186.1

EINECS

200-734-3

RTECS

CZ7800000

RTECS Class

Agricultural Chemical and Pesticide; Mutagen

Merck

13,4199

Beilstein/Gmelin

398632

Beilstein Reference

4-05-00-00742

EC Class

sensitizing

Physical and Chemical Properties

Appearance

Clear yellow crystals or yellow crystalline solid.

Solubility in water

Slightly soluble

Melting Point

24 - 26

Boiling Point

296

Vapor Pressure

0.003 (25 C)

Density

1.4718 g/cm3 (85 C)

Partition Coefficient

1.16

Heat Of Vaporization

51.4 kJ/mol

Usage

Reagent for labeling prc: free amino acid groups, in modified wohl degradations.

Refractive Index

1.56997 (20 C)

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 immediately. 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 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. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

May cause severe irritation of the respiratory tract with possible burns.

Skin

Causes skin irritation and possible severe skin irritation especially if the skin is wet or moist.

Eyes

Causes eye irritation and possible burns.

Ingestion

May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns. Ingestion of large amounts of fluoride may include salivation, nausea, vomiting, abdominal pain, fever, labored breathing. Exposure to fluoride compounds can result in systemic toxic effects on the heart, liver, and kidneys. It may also deplete calcium levels in the body leading to hypocalcemia and death. Acute oral toxicity tests have shown lethality with central nervous system signs in mice.

Hazards

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

EC Risk Phrase

R 45 46 23/24/25 43

EC Safety Phrase

S 53 45

UN (DOT)

2810

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

Chronic inhalation and ingestion may cause fluorosis with skeletal abnormalities. Chronic exposure to fluoride compounds may cause systemic toxicity.

Fire Fighting Measures

Flash Point

133

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.

Fire Potential

This chemical is probably combustible.

Accidental Release Measures

Small spills/leaks

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

Stability and Reactivity

Disposal Code

9

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents, strong bases.

Decomposition

Nitrogen oxides, carbon monoxide, carbon dioxide, hydrogen fluoride.

Combustion Products

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

Transport Information

UN Number

2810

Hazard Class

6.1

Packing Group

I; II; III

HS Code

2904 90 85