Product Identification

Product Name

4-Methyl-2-nitroaniline

Synonyms

2-Nitro-p-toluidine
4-Amino-3-nitrotoluene
Azoamine Red A
Azobase NAT

CAS

89-62-3

Formula

C7H8N2O2

Molecular Weight

152.15

EINECS

201-924-9

RTECS

XU8227250

RTECS Class

Drug

Beilstein/Gmelin

879506

Beilstein Reference

4-12-00-02000

EC Index Number

612-025-00-X

EC Class

toxic, dangerous for the environment

Physical and Chemical Properties

Appearance

Red crystals or bright orange powder.

Solubility in water

0.2 g/L

Melting Point

112 - 114

Boiling Point

303

Vapor Pressure

0.001 (25 C)

Density

1.164 g/cm3 (20 C)

pKa/pKb

13.54 (pKb)

Partition Coefficient

2.29

Heat Of Vaporization

54.3 kJ/mol

Vapor Density

5.25

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 breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.

Skin

Get medical aid immediately. 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

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

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

Handling

Use only in a well ventilated area. Minimize dust generation and accumulation. Do not get in eyes, on skin, or on clothing. Do not ingest or inhale. Keep from contact with moist air and steam.

Hazards Identification

Inhalation

Causes respiratory tract irritation.

Skin

Causes skin irritation. Harmful if absorbed through the skin.

Eyes

Causes eye irritation.

Ingestion

Harmful if swallowed. Causes digestive tract irritation.

Hazards

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

EC Risk Phrase

R 23/24/25 33 51/53

EC Safety Phrase

S 28 36/37 45 61

UN (DOT)

2660

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

A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.

Exposure Effects

May cause methemoglobinemia, which is characterized by chocolate-brown colored blood, headache, weakness, dizziness, breath shortness, cyanosis, rapid heart rate, unconsciousness and possible death. Effects may be delayed.

Poison Class

4

Fire Fighting Measures

Flash Point

137

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Water runoff can cause environmental damage. Dike and collect water used to fight fire. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.

Fire Potential

This chemical is combustible.

Accidental Release Measures

Small spills/leaks

Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation. Cover with dry earth, dry sand, or other non-combustible material followed with plastic sheet to minimize spreading and contact with water.

Stability and Reactivity

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents, acids, acid anhydrides, chloroformates, acid chlorides.

Decomposition

Nitrogen oxides, carbon monoxide, carbon dioxide, nitrogen.

Combustion Products

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

Transport Information

UN Number

2660

Hazard Class

6.1

Packing Group

III

HS Code

2921 43 00