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Isooctanol
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Description
Isooctanol
Other Names: 2-Ethylhexanol, Isooctyl alcohol, Octanol-2-ethyl
CAS Number: 104-76-7
Sum Formula: C₈H₁₈O
Molar Mass: 130.23 g/mol
Appearance: Colorless, oily liquid
Isooctanol (2-ethylhexanol) is a branched-chain fatty alcohol. It is primarily used as a precursor in the manufacture of plasticizers, lubricants, and surfactants. It has low volatility, moderate water solubility, and a characteristic odor.
Chemical and Physical Properties
Density: 0.833 g/cm³ (at 20°C)
Melting Point: -76°C
Boiling Point: 184°C
Solubility in Water: Slightly soluble (1.1 g/L at 20°C)
Solubility in Other Solvents: Miscible with most organic solvents including ethanol, ether, and chloroform
Odor: Mild, characteristic alcohol-like odor
Applications
Plasticizer Production: Used in the synthesis of esters such as dioctyl phthalate (DOP) and dioctyl adipate (DOA).
Surfactants: Acts as a raw material in the production of nonionic surfactants and detergents.
Lubricants and Additives: Utilized in synthetic lubricants and as a modifier in coatings and adhesives.
Chemical Intermediate: Serves as a base for producing a range of esters and specialty chemicals.
Safety

Signal Word: Warning
H315 (88.6%): Causes skin irritation [Warning Skin corrosion/irritation]
H319 (98.7%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
H332 (71.2%): Harmful if inhaled [Warning Acute toxicity, inhalation]
H335 (72.5%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P317, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501
First Aid Measures
Eye Contact: Rinse cautiously with water for at least 15 minutes. Seek medical attention if irritation persists.
Skin Contact: Wash with soap and water. Remove contaminated clothing. Seek medical attention if irritation develops.
Inhalation: Move to fresh air. Seek medical attention if symptoms develop or persist.
Ingestion: Rinse mouth with water. Do not induce vomiting. Seek medical attention if unwell.
Handling and Storage
Storage Conditions: Store in a cool, dry, well-ventilated area away from heat, sparks, and open flames. Keep container tightly closed.
Handling Precautions: Avoid contact with skin, eyes, and clothing. Use only with adequate ventilation. Wear appropriate personal protective equipment.
