Use and Manufacturing

1 Definition

ChEBI: An octanol carrying the hydroxy group at position 1.

2 General Description

A clear colorless liquid with a penetrating aromatic odor. Insoluble in water and floats on water. Vapors heavier than air. Vapors may irritate the eyes, nose, and respiratory system.

3 Produe Method

Octanol exists in the form of free state or acetate, butyrate and isovalerate esters bitter in orange, grapefruit, sweet orange, green tea, violet leaves and other essential oils. In industrial production, octanol can be obtained by the reduce of octyl aldehyde or the esterification of the octanoic acid in coconut oil. Octanol can also be prepared through carbonyl synthesis with heptene-1 as the raw material. Heptene, carbon monoxide and hydrogen can react in the presence of cobalt salt at 150-170 °C and under high pressure of 20-30MPa to generate aldehyde. After cobalt removal, the above aldehyde is converted into primary alcohol by pressurized hydrogenation with the catalyst of nickel. There has been mature production technology of this method in foreign countries.

4 Purification Methods

Fractionally distil it under reduced pressure. Dry it with sodium and again fractionally distil or reflux with boric anhydride and re-distilled (b 195-205o/5mm), the distillate being neutralised with NaOH and again fractionally distilled. Also purify it by distillation from Raney nickel and by preparative GLC. [Beilstein 1 IV 1756.] 1-Octanol Preparation Products And Raw materials Raw materials

5 Usage

1.1-octanol can be appropriately used in roses, jasmine, lilac, sweet tofu pudding, honey, orange blossom, citrus, parsnip root, cologne, pine needles and other types. And n-octanol can coordinate with roses, ylang-ylang, parsnip root, orange oil and linalool. Trace n-octanol can also be used in edibile peaches, pineapple, coconut, chocolate, citrus and fruit-based flavors.

2. 1-octanol is mainly used in the production of plasticizers, extractants, stabilizers, and also used as solvents and spices intermediates. In the field of plasticizers, octanol is generally referred to 2-ethyl alcohol, which is a megaton bulk raw materials and is more valuable than n-octanol in the industry. Octanol itself is also used as spices, blending roses, lilies and other floral fragrance to make soap perfume. China's GB2760-86 provides for the allowed use of this product for food spices. And it is mainly used to prepare coconut, pineapple, peach, chocolate and citrus flavor. 

3. 1-octanol can be used as raw material for perfume, octyl aldehyde, octanoic acid and its ester. It can also be used as solvent, antifoaming agent and lubricating oil additive. 4. Used for the preparation of spices, but also for solvents and antifoaming agents 5. Used as surfactants, solvents, defoamers, industrial additives, etc. 6. Used as solvents, flavoring agents and defoamers. Replace amyl alcohol to reduce ketones in organic synthesis. Used for manufacturing perfume, and also used as gas chromatography analysis standards.