Product Identification

Product Name

alpha-Methylnitrobenzene

Synonyms

1-Methyl-2-nitrobenzene
2-Methylnitrobenzene
2-Nitrotoluene
Methylnitrobenzene

CAS

88-72-2

Formula

C7H7NO2

Molecular Weight

137.13999999999999

EINECS

201-853-3

RTECS

XT3150000

RTECS Class

Tumorigen; Mutagen; Reproductive Effector

Merck

12,6748

Beilstein/Gmelin

1907580

Beilstein Reference

4-05-00-00845

EC Index Number

609-006-00-3

EC Class

Toxic; Danger of cumulative effects; Dangerous for the Environment

Physical and Chemical Properties

Appearance

Yellow liquid with an almond-like odor.

Solubility in water

0.7 g/L

Melting Point

-4 - -3

Boiling Point

221.7

Vapor Pressure

0.29 (25 C)

Density

1.163 g/cm3 (20 C)

Partition Coefficient

2.3

Heat Of Vaporization

59.1 kJ/mol

Heat Of Combustion

-3597 kJ/mol

Usage

For production of toluidine, tolidine, fuchsine, and various synthetic dyes.

Vapor Density

4.72

Saturation Concentration

0.01% (20 C)

Odor threshold

0.05 mg/L

Refractive Index

1.5450 (20 C)

First Aid Measures

Ingestion

Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.

Inhalation

Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. 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. 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 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. Keep container tightly closed. Avoid contact with heat, sparks and flame. Do not ingest or inhale.

Hazards Identification

Inhalation

May be fatal if inhaled. Causes respiratory tract irritation. Aspiration may cause respiratory swelling and pneumonitis.

Skin

Causes mild skin irritation.

Eyes

Causes mild eye irritation.

Ingestion

Aspiration hazard. May be harmful if swallowed. Causes digestive tract irritation.

Hazards

Containers may explode when heated.

EC Risk Phrase

R 23/24/25 33 51/53

EC Safety Phrase

S 28 37 45 61

UN (DOT)

1664

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

CNS effects include headache, dizziness, altered mental status, confusion (lethargy progressing coma), seizures, syncope; occur secondary to CNS hypoxia, usually with levels > 20%.

Exposure limit(s)

TLV (as TWA): 2 ppm; 11 mg/m3 (skin) (ACGIH 1991-1992). OSHA PEL: TWA 5 ppm (30 mg/m3) skin NIOSH REL: TWA 2 ppm (11 mg/m3) skin NIOSH IDLH: 200 ppm

Poison Class

3

Fire Fighting Measures

Flash Point

106

Autoignition

420

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water spray to keep fire-exposed containers cool. Containers may explode when heated. Extinguishing media: Use water spray to cool fire-exposed containers. Do NOT use straight streams of water. For small fires, use dry chemical, carbon dioxide, or water spray. For large fires, use water spray, fog or regular foam.

Upper exp. limit

8.8

Lower exp. limit

1.47

Fire Potential

Moderately flammable. Combustible.

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. Provide ventilation.

Stability and Reactivity

Disposal Code

9

Incompatibilities

Oxidizing agents

Stability

Stable under normal temperatures and pressures.

Decomposition

Nitrogen oxides, carbon monoxide, carbon dioxide, nitrogen.

Combustion Products

Toxic fumes may be generated.

Transport Information

UN Number

1664

Hazard Class

6.1

Packing Group

II

HS Code

2904 20 00