- Isopentyl alcohol
Colorless liquid, with a disagreeable sweet odor.
Synthetic flavor, intermediate in prepn of pharmaceuticals, for isoamyl acetate and other esters, for dithiophosphate esters (lubricating oil additive and hydraulic fluid additive).
Registry Numbers and Inventories.
EC Index Number
R 10 20
Tumorigen; Human Data; Primary Irritant
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
Boiling point, °C
Vapor pressure, mmHg
5 (32 C)
Vapor density (air=1)
Approximately 2000-3000 ppm (0.2-0.3%) at 20 C; approximately 4000 ppm (0.4%) at 25 C (calculated)
0.19 (n-butyl acetate = 1)
Odor Threshold Odor threshold 25 mg/m3
0.812 g/cm3 (20 C)
Solubility in water
4.37 cp (20 C)
23.73 g/s2 (20 C)
1.4075 (20 C)
1.7 D (20 C)
14.7 (20 C)
Partition coefficient, pKow
Heat of vaporization
Heat of combustion
Hazards and Protection.
Keep away from sources of ignition. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area.
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Do not get on skin or in eyes. Do not ingest or inhale. 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 gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
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.
Remove all sources of ignition. Absorb spill using an absorbent, non-combustible material such as earth, sand, or vermiculite. Use a spark-proof tool. Provide ventilation. A vapor suppressing foam may be used to reduce vapors. Prevent spreading of vapors through sewers, ventilation systems and confined areas.
Stable under normal temperatures and pressures.
Strong oxidizing agents. Substance reacts explosively with hydrogen trisulfide and strongly with reducing materials.
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. May polymerize explosively when involved in a fire. Containers may explode if exposed to fire. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. Water may be ineffective. For large fires, use water spray, fog or alcohol-resistant foam. Do NOT use straight streams of water. Cool containers with flooding quantities of water until well after fire is out.
Moderate - combustion with moderate heating.
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers.
Toxic gases and vapors (such as carbon monoxide) may be released in a fire involving isoamyl alcohol.
OSHA PEL: TWA 100 ppm (360 mg/m3) NIOSH REL: TWA 100 ppm (360 mg/m3) ST 125 ppm (450 mg/m3) NIOSH IDLH: 500 ppm
Headache, dizziness, giddiness, ataxia, sedation and coma may occur.
May cause irritation of the digestive tract. May cause a narcotic effect with possible coma. May be harmful if swallowed.
Causes respiratory tract irritation. Causes narcotic effects including headache, dizziness, weakness, unconsciousness, and possible death. May cause visual abnormalities.
Causes skin irritation. Prolonged and/or repeated contact may cause defatting of the skin and dermatitis.
Causes eye irritation.
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration.
Immediately 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.
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.