Clear, colorless liquid that turns yellow on agng. It has a pleasant, sweet odorthat is faint minty.
Intermediate in synthesis of mesityl oxide, hexalene glycol and other organic chemicals.
Registry Numbers and Inventories.
EC Index Number
Human Data; Primary Irritant
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
Boiling point, °C
Vapor pressure, mmHg
0.54 (25 C)
Vapor density (air=1)
0.1% at 20 C
0.14 (n-butyl acetate = 1)
Odor Threshold Odor threshold 0.28 ppm
0.9555 g/cm3 (0 C)
Solubility in water
2.90 cp (25 C)
30.9 g/s2 (17 C)
1.4233 (16 C)
18,5 (25 C)
Partition coefficient, pKow
Heat of vaporization
Heat of combustion
Hazards and Protection.
Keep away from heat, sparks, and flame. Keep away from heat and flame. Keep away from sources of ignition. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances.
Wash thoroughly after handling. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
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.
A full facepiece respirator with organic vapor cartridge may be worn up to 50 times the exposure limit or the maximum use concentration specified by the appropriate regulatory agency or respirator supplier, whichever is lowest. For emergencies or instances where the exposure levels are not known, use a full-facepiece positive-pressure, air-supplied respirator.
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. Clean up spills immediately, using the appropriate protective equipment. Scoop up with a nonsparking tool, then place into a suitable container for disposal. Remove all sources of ignition. Provide ventilation.
Stable at room temperature in closed containers under normal storage and handling conditions.
Oxidizing agents, reducing agents, amines, alkanol, amines, aluminum, alkalis, pyridines, ammonia, isocyanates, inorganic acids and bases.
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
Upper exp. limit, %
Lower exp. limit, %
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Use water spray to keep fire-exposed containers cool. Extinguishing media: Use alcohol foam, carbon dioxide, or water spray when fighting fires involving this material. In case of fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Use water spray to cool fire-exposed containers.
Combustible liquid. Moderately flammable. Combustion with moderate heating.
Flashback along vapor trail may occur.
Fire may produce irritating, corrosive and/or toxic gases.
NIOSH REL: TWA 50 ppm (240 mg/m3) OSHA PEL: TWA 50 ppm (240 mg/m3) IDLH 1800 ppm [10%LEL]
Prolonged or repeated skin contact may cause dermatitis. May cause liver and kidney damage.
Aspiration hazard. May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause liver and kidney damage. Aspiration of material into the lungs may cause chemical pneumonitis, which may be fatal. May cause headache. May cause unconsciousness. May cause central nervous system depression. May cause damage to the red blood cells.
May cause respiratory tract irritation. May cause effects similar to those described for ingestion. May cause narcotic effects in high concentration. Aspiration may cause respiratory swelling and pneumonitis. Aspiration may lead to pulmonary edema.
Causes skin irritation. May be absorbed through skin. May cause dermatitis.
Vapors cause eye irritation. Splashes cause severe irritation, possible corneal burns and eye damage.
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.
Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. Get medical aid. 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.
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. Wash clothing before reuse.
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.