Mesitoic acid

  • b-Isodurylic acid
  • 2,4,6-Trimethylbenzoic acid
  • Mesitylenecarboxylic acid
Formula
2,4,6-(CH3)3C6H2COOH
Structure
Description
White solid.

Registry Numbers and Inventories.
CAS
480-63-7
EC (EINECS/ELINCS)
207-553-9
S 22 24/25
RTECS
DI0887010
RTECS class
Drug
Beilstein/Gmelin
1866187
Beilstein Reference
4-09-00-01854
Canada DSL/NDSL
NDSL
US TSCA
Listed
New Zealand
Listed

Properties.
Formula
C10H12O2
Formula mass
164.21
Melting point, °C
151 - 154
Boiling point, °C
298
Vapor pressure, mmHg
5 (0 C)
Solubility in water
Soluble
pKa/pKb
3.85 (pKa)
Partition coefficient, pKow
3.05

Hazards and Protection.
Storage
Keep away from sources of ignition. Store in a cool, dry place. Do not store in direct sunlight. Store in a tightly closed container. Keep under a nitrogen blanket. Flammables-area.
Handling
Use spark-proof tools and explosion proof equipment. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.
Protection
Eyes: Wear chemical goggles. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear a chemical apron.
Respirators
A NIOSH/MSHA approved air purifying dust or mist respirator or European Standard EN 149. 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. Vacuum or sweep up material and place into a suitable disposal container. Remove all sources of ignition.
Disposal code
4
Stability
Stable under normal shipping and handling conditions. Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents, strong acids, moist air or water.
Decomposition
Carbon monoxide, carbon dioxide, oxides of boron.

Fire.
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. Containers may explode in the heat of a fire. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog, or alcohol-resistant foam. Do NOT use dry chemical. In case of fire use water spray, dry chemical, carbon dioxide, or chemical foam.

Health.
Exposure effects
   Ingestion
Causes gastrointestinal irritation with nausea, vomiting and diarrhea. The toxicological properties of this substance have not been fully investigated.
   Inhalation
May cause respiratory tract irritation.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
Get medical aid. Wash mouth out with water.
   Inhalation
Remove from exposure to fresh air immediately. Get medical aid if cough or other symptoms appear.
   Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
HS Code
2916 39 00