Oleyl alcohol is a colorless or light yellow oily liquid. The melting point is 6-7℃, the boiling point is 205-210℃ (2kPa), the relative density is 0.8489 (20/4℃), and the refractive index is 1.4606. Soluble in ethanol and ether, insoluble in water. There are irritating fumes when heated.
Most unsaturated alcohols are oleyl alcohol, but pure octadecenyl alcohol cannot be obtained in large quantities. There are several specifications of unsaturated alcohols in the United States, which generally contain at least 55% oleyl alcohol. Those with an iodine value of 65 or above are collectively called oleyl alcohol. They are divided into refined grade, industrial grade I and industrial grade II. They can be classified according to their hydroxyl value and iodine value. , acid value, cloud point, saponification value, color and odor to identify and classify. The main indicators generally used to determine the quality of oleyl alcohol are hydroxyl value, iodine value and cloud point.
Uses of refined oleyl alcohol and industrial oleyl alcohol:
Refined grade oleyl alcohol is mainly used because of its light color, small taste, good fluidity and other advantages. In the cosmetics and pharmaceutical industry, it is directly added to emulsions and liquid lotions as softeners and emulsion stabilizers. The concentration used is low, generally only accounting for 1% to 4% of the product weight. Oleyl alcohol gives the skin a smooth, soft feel.
Industrial grade is mostly used as a chemical intermediate to prepare surfactants such as ethoxylates, sulfates and greases.
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