2,4,6-Trimethylaniline

  • Aminomesitylene
  • 2-Aminomesitylene
  • Mesidin
  • Mesidine
  • Mesitylamine
Formula
2,4,6-(CH3)3C6H2NH2
Structure
Description
Liquid.
Uses
Dyes.

Registry Numbers and Inventories.
CAS
88-05-1
EC (EINECS/ELINCS)
201-794-3
EC Class
harmful, irritant
R 20/21/22 36/38
S 26 36/37/39
RTECS
BZ0700000
RTECS class
Tumorigen; Mutagen; Primary Irritant
UN (DOT)
2810
Beilstein/Gmelin
636559
Beilstein Reference
4-12-00-02648
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C9H13N
Formula mass
135.21
Melting point, °C
-5
Boiling point, °C
233
Vapor pressure, mmHg
0.06 (25 C)
Density
0.96 g/cm3
Solubility in water
Insoluble
Refractive index
1.5495 (20 C)
pKa/pKb
9.62 (pKb)
Partition coefficient, pKow
2.35
Heat of vaporization
46.8 kJ/mol

Hazards and Protection.
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.
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.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container.
Disposal code
5
Stability
No data.
Incompatibilities
Strong oxidizing agents.
Decomposition
Nitrogen oxides, carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
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.
Hazards
When heated to decomposition, it emits toxic fumes of nitrogen oxides. Avoid decomposing heat.

Health.
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.
   Ingestion
Poison by ingestion.
   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.

First aid
 
   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.

Transport.
UN number
2810
Response guide
USCG CHRIS Code
TMN
 
HS Code
2921 49 80