Isooctanol

  • Methylheptyl alcohol (mixed isomers)
  • Isooctyl alcohol (mixed isomers)
Formula
C8H18O
Structure
Description
A clear colorless liquid with a faint pleasant odor.
Uses
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.
CAS
26952-21-6
EC (EINECS/ELINCS)
248-133-5
RTECS
NS7700000
RTECS class
Primary Irritant
UN (DOT)
1986
Merck
12,5211
Beilstein/Gmelin
NA
Swiss Giftliste 1
G-2303
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C8H18O
Formula mass
130.23
Melting point, °C
-48
Boiling point, °C
83 - 91
Vapor pressure, mmHg
1
Vapor density (air=1)
4.5
Critical temperature
347
Critical pressure
27.7
Density
0.832 g/cm3 (20 C)
Solubility in water
Insoluble
Viscosity
10.6 cp at 15C
Surface tension
27.53 g/s2 at 20 C
Partition coefficient, pKow
2.55
Heat of vaporization
42.4 kJ/mol
Heat of combustion
-5275 kJ/mol

Hazards and Protection.
Storage
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.
B3 D2B
Handling
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.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Air-supplied mask in confined areas; plastic gloves; goggles; eye bath and safety shower.
Small spills/leaks
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.
Stability
Stable at normal temperatures and pressures.
Incompatibilities
Strong oxidants.
Decomposition
Carbon monoxide and carbon dioxide.

Fire.
Flash Point,°C
82
Autoignition, °C
277
Upper exp. limit, %
5.7
Lower exp. limit, %
0.9
Fire fighting
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.
Fire potential
Dangerous when exposed to heat or flame very flammable.
Hazards
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.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.
Health
0
 
Flammability
2
 
 
Reactivity
0
 

Health.
Exposure limit(s)
TLV: 50 ppm; 266 mg/m3 (as TWA) (skin) (ACGIH 1991-1992). NIOSH REL: TWA 50 ppm (270 mg/m3) skin
Poison_Class
4
Exposure effects
Headache, dizziness, giddiness, ataxia, sedation and coma may occur.
   Ingestion
Nausea, vomiting, and diarrhea are common. Gastrointestinal hemorrhage can occur.
   Inhalation
Inhalation causes pulmonary tract irritation and rarely pulmonary edema. Severe respiratory depression or death has not been reported after inhalation.
   Skin
Dermatitis of varying severity may be noted. Drying and fissuring of the skin may be noted following chronic exposure.
   Eyes
Vapor or splash contact exposure may cause burning, tearing, blurring of vision, and vacuolar keratopathy.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
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.
   Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.
   Eyes
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.

Transport.
UN number
1986
Response guide
Hazard class
3
Packing Group
I; II; III
 
USCG CHRIS Code
IOA
 
20 Alcohols, Glycols
Std. Transport #
4913229
 
IMO Chemical Code
17
IMO Pollution Category
C
IMO Hazard code
P