Product Identification
【Product Name】Mesitylenecarboxylic acid
【Synonyms】2,4,6-Trimethylbenzoic acid　2,4,6-三甲基苯甲酸
【CAS】480-63-7
【Formula】C10H12O2
【Molecular Weight】164.21
【EINECS】207-553-9
【RTECS】DI0887010
【RTECS Class】Drug
【Beilstein/Gmelin】1866187
【Beilstein Reference】4-09-00-01854

Physical and Chemical Properties
【Appearance】White solid.
【Solubility in water】Soluble
【Melting Point】151 - 154℃
【Boiling Point】298℃
【Vapor Pressure】5 (0℃)
【pKa/pKb】3.85 (pKa)
【Partition Coefficient】3.05

First Aid Measures
【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.

Handling and Storage
【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.

Hazards Identification
【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.
【EC Safety Phrase】S 22 24/25

Exposure Controls/Personal Protection
【Personal Protection】Eyes: Wear chemical ggles. 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.

Fire Fighting Measures
【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.

Accidental Release Measures
【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.

Stability and Reactivity
【Disposal Code】4
【Incompatibilities】Oxidizing agents, strong acids, moist air or water.
【Stability】Stable under normal shipping and handling conditions. Stable under normal temperatures and pressures.
【Decomposition】Carbon monoxide, carbon dioxide, oxides of boron.

Transport Information
【HS Code】2916 39 00