- Methylheptyl alcohol (mixed isomers)
- Isooctyl alcohol (mixed isomers)
A clear colorless liquid with a faint pleasant odor.
Ingredient of plasticizers, intermediate for nonionic detergents and surfactants, synthetic drying oils, cutting and lubricating oils, hydraulic fluids, resin solvents, emulsifiers, antifoaming agent, intermediate for introducing the isooctyl group into other compound.
Registry Numbers and Inventories.
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
Boiling point, °C
83 - 91
Vapor pressure, mmHg
Vapor density (air=1)
0.832 g/cm3 (20 C)
Solubility in water
10.6 cp at 15C
27.53 g/s2 at 20 C
Partition coefficient, pKow
Heat of vaporization
Heat of combustion
Hazards and Protection.
Isooctyl alcohol should be stored in a cool, dry, well-ventilated area in tightly sealed containers that are labeled in accordance with OSHA's Hazard Communication Standard [29 CFR 1910.1200]. Containers of isooctyl alcohol should be protected from physical damage and exposure to heat, sparks, or open flames and should be stored separately from strong oxidizers.
Containers of this material may be hazardous when emptied. Since emptied containers retain product residues (vapor, liquid, and/or solid), all hazard precautions given in the data sheet must be observed. All five-gallon pails and larger metal containers, including tank cars and tank trucks, should be grounded and/or bonded when material is transferred.
Wear appropriate protective gloves, clothing and goggles.
Air-supplied mask in confined areas; plastic gloves; goggles; eye bath and safety shower.
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Use water spray to knock-down vapors.
Stable at normal temperatures and pressures.
Carbon monoxide and carbon dioxide.
Upper exp. limit, %
Lower exp. limit, %
Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may be ineffective. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use foam, dry chemical, or carbon dioxide.
Dangerous when exposed to heat or flame very flammable.
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 and poison hazard indoors, outdoors or in sewers.
Fire will produce irritating, corrosive and/or toxic gases.
TLV: 50 ppm; 266 mg/m3 (as TWA) (skin) (ACGIH 1991-1992). NIOSH REL: TWA 50 ppm (270 mg/m3) skin
Headache, dizziness, giddiness, ataxia, sedation and coma may occur.
Nausea, vomiting, and diarrhea are common. Gastrointestinal hemorrhage can occur.
Inhalation causes pulmonary tract irritation and rarely pulmonary edema. Severe respiratory depression or death has not been reported after inhalation.
Dermatitis of varying severity may be noted. Drying and fissuring of the skin may be noted following chronic exposure.
Vapor or splash contact exposure may cause burning, tearing, blurring of vision, and vacuolar keratopathy.
Seek medical assistance.
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes.
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.