Product Identification

Product Name

2,4,6-Trimethylbenzenamine

Synonyms

2-Aminomesitylene
Aminomesitylene
Mesidin
Mesidine
Mesitylamine

CAS

88-05-1

Formula

C9H13N

Molecular Weight

135.21

EINECS

201-794-3

RTECS

BZ0700000

RTECS Class

Tumorigen; Mutagen; Primary Irritant

Beilstein/Gmelin

636559

Beilstein Reference

4-12-00-02648

EC Class

harmful, irritant

Physical and Chemical Properties

Appearance

Liquid.

Solubility in water

Insoluble

Melting Point

-5

Boiling Point

233

Vapor Pressure

0.06 (25 C)

Density

0.96 g/cm3

pKa/pKb

9.62 (pKb)

Partition Coefficient

2.35

Heat Of Vaporization

46.8 kJ/mol

Usage

Dyes.

Refractive Index

1.5495 (20 C)

First Aid Measures

Ingestion

Get medical aid immediately. Wash mouth out with water.

Inhalation

Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.

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.

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

Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container.

Handling

Do not breathe dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Use only in a chemical fume hood.

Hazards Identification

Inhalation

Toxic if inhaled.

Skin

Causes moderate skin irritation. Absorption into the body may cause cyanosis. Toxic in contact with skin.

Eyes

Causes moderate eye irritation.

Ingestion

Poison by ingestion.

Hazards

When heated to decomposition, it emits toxic fumes of nitrogen oxides. Avoid decomposing heat.

EC Risk Phrase

R 20/21/22 36/38

EC Safety Phrase

S 26 36/37/39

UN (DOT)

2810

Exposure Controls/Personal Protection

Personal Protection

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

May cause methemoglobinemia, which is characterized by chocolate-brown colored blood, headache, weakness, dizziness, breath shortness, cyanosis, rapid heart rate, unconsciousness and possible death. Absorption into the body leads to the formation of methemoglobin which in sufficient concentrations causes cyanosis.

Fire Fighting Measures

Flash Point

96

Fire Fighting

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

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container.

Stability and Reactivity

Disposal Code

5

Stability

No data.

Incompatibilities

Strong oxidizing agents.

Decomposition

Nitrogen oxides, carbon monoxide, carbon dioxide.

Transport Information

UN Number

2810

HS Code

2921 49 80