1-Octadecanol
1-Octadecanol
CAS: 112-92-5
Molecular Formula: C18H38O
1-Octadecanol - Names and Identifiers
| Name | 1-Octadecanol |
| Synonyms | C1899 octadecanol 1-Octadecanol octadecan-1-ol Stearylalkohol Octadecanol, 1- 1-Hydroxyoctadecane n-Octadecyl alcohol Stearyl Alcohol (125 mg) n-OCTADECYL ALCOHOL, TECH Stearyl Alcohol (C18 Alcohol) CETEARETH-6(and)Stearyl alcohol Stearyl alcohol, synthesis grade Octadecyl alcohol, Stearyl alcohol Stearyl alcohol, extra pure, Ph Eur, USP 1-Octadecanol,Octadecyl alcohol, Stearyl alcohol |
| CAS | 112-92-5 |
| EINECS | 204-017-6 |
| InChI | InChI=1/C18H38O/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19/h19H,2-18H2,1H3 |
1-Octadecanol - Physico-chemical Properties
| Molecular Formula | C18H38O |
| Molar Mass | 270.49 |
| Density | 0.812 g/mL at 25 °C (lit.) |
| Melting Point | 56-59 °C (lit.) |
| Boling Point | 210°C15mm Hg |
| Flash Point | 185°C |
| Water Solubility | insoluble |
| Solubility | Insoluble in water, soluble in ethanol, ether, benzene, chloroform. |
| Vapor Presure | <0.01 mm Hg ( 38 °C) |
| Vapor Density | 9.3 (vs air) |
| Appearance | White flakes |
| Specific Gravity | 0.812 |
| Color | White |
| Merck | 14,8805 |
| BRN | 1362907 |
| pKa | 15.20±0.10(Predicted) |
| Storage Condition | 2-8°C |
| Sensitive | Easily absorbing moisture |
| Explosive Limit | ~8% |
| Refractive Index | 1.4356 (estimate) |
| MDL | MFCD00002823 |
| Physical and Chemical Properties | Properties of white flake or granular Crystal main purposes: used as color forming agent of color film and raw material of resin and synthetic rubber, also used in medicine and so on. |
| Use | Used as color forming agent for color film and raw materials for making flat, resin and synthetic rubber, commonly used in the production of surfactants, can also be used in the production of drugs and cosmetics |
1-Octadecanol - Risk and Safety
| Safety Description | 24/25 - Avoid contact with skin and eyes. |
| UN IDs | UN 1986 |
| WGK Germany | - |
| RTECS | RG2010000 |
| TSCA | Yes |
| HS Code | 29051700 |
| Toxicity | LD50 orally in Rabbit: > 2000 mg/kg |
1-Octadecanol - Upstream Downstream Industry
| Downstream Products | Dimethyl distearylammonium chloride Octadearyl dimethyl ammonium chloride |
1-Octadecanol - Reference
| Reference Show more | 1. Liu Rong, Zhang Peng, Shi Bowen, Wang Wenping. Preparation of aspirin enteric-coated particles by melt extrusion [J]. Medical Herald, 2021,40(03):365-368. |
1-Octadecanol - Nature
Open Data Verified Data
white flakes or granules. Melting Point 59. 4~59.8 °c; 210 °c. Soluble in alcohol, benzene, chloroform, insoluble in water.
Last Update：2024-01-02 23:10:35
1-Octadecanol - Preparation Method
Open Data Verified Data
It can be prepared by hydrolysis of cetyl oil, by hydrogenation of stearic acid under catalysis of copper chromate, or by reduction of ethyl stearate with saturated ethanol. Heptadecene fraction can also be obtained by controlling the polymerization reaction of ethylene under the action of alkyl aluminum, and then the eighteen alcohol can be obtained by carbonyl synthesis.
Last Update：2025-06-10 22:55:16
1-Octadecanol - Standard
Authoritative Data Verified Data
This product is a mixture of solid alcohols. The system is prepared by reducing ethyl stearate with lithium lead hydride. Containing no less than 95.0% alcohol (C18H380).
Last Update：2024-01-02 23:10:35
1-Octadecanol - Trait
Authoritative Data Verified Data
- This product is white powder, granules, flakes or lumps.
- This product is soluble in ether, soluble in ethanol, almost insoluble in water.
melting point
The melting point of this product (General 0612 second method) is 57~60°C.
acid value
should not be greater than 1. 0 (General 0713).
saponification value
take this product about 20. 0G, according to the operation (General 0713), should not be greater than 2 .0.
iodine value
take 2.0g of this product, add chloroform 2 5 m l, shake to dissolve, operate according to law (General rule 0713), should not be greater than 2.0.
hydroxyl value
should be 197 to 217 (General 0713).
Last Update：2022-01-01 11:19:49
1-Octadecanol - Application
Open Data Verified Data
can be used as an additive for oil-based fracturing fluids instead of decasix alcohol. Octanol can be used in the production of flat, resin and synthetic rubber, color couplers and so on.
Last Update：2025-08-19 16:24:40
1-Octadecanol - Differential diagnosis
Authoritative Data Verified Data
In the chromatogram recorded under the content determination item, the retention time of the main peak of the test solution should be consistent with the retention time of the main peak of the control solution.
Last Update：2022-01-01 11:19:50
1-Octadecanol - Exam
Authoritative Data Verified Data
alkalinity
take 3.0g of this product, add anhydrous ethanol 25ml, heat to dissolve, cool, add 2 drops of phenolphthalein indicator solution, the solution should not appear red.
clarity and color of ethanol solution
take 0.50g of this product, add ethanol 20 m l, heat to dissolve, cool, the solution should be clear and colorless; If it is turbid, compared with No. 1 turbidity standard solution (General Principles 0902 first method), should not be more concentrated.
ignition
Take 2. 0 G of the residue and check it according to law (General rule 0841). The residue shall not exceed 0.05%.
Last Update：2022-01-01 11:19:50
1-Octadecanol - Content determination
Authoritative Data Verified Data
measured by gas chromatography (General 0521).
chromatographic conditions and system suitability test
using 100%-polydimethylsiloxane capillary column as analytical column, flame ionization detector; Column temperature 205°C, injection port temperature 250°C, detector temperature 250°C; the number of theoretical plates shall not be less than 10 000 based on the calculation of the peak of the alcohol, and the separation degree of the alcohol peak and the adjacent chromatographic peak shall be in accordance with the regulations.
assay
take this product lOOmg, precision weighing, put it in 100ml measuring flask, add anhydrous ethanol to dissolve and dilute to the scale, shake well, take lju l and inject it into human gas chromatograph, record the chromatogram; Accurately weigh the appropriate amount of the reference product, and dissolve it with anhydrous ethanol to make it contain 1 per lm l. 0 mg of the solution, shake, the same method of operation, according to the external standard method to calculate the peak area of the content of the alcohol, that is.
Last Update：2022-01-01 11:19:51
1-Octadecanol - Category
Authoritative Data Verified Data
pharmaceutical excipients, blockers and matrix.
Last Update：2022-01-01 11:19:51
1-Octadecanol - Storage
Authoritative Data Verified Data
sealed, stored in a cool and dry place.
Last Update：2022-01-01 11:19:52
1-Octadecanol - Reference Information
| LogP | 7.4 |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | octanol can be used instead of hexadecanol, such as dispersant in pharmaceuticals, cream and emulsifier in cosmetics, as heat preservation agent for rice fields, reservoir covering agent, defoamer, polishing agent, lubricant, etc. Decoctanol can be used to produce Pingjia, resin and synthetic rubber, color film color forming agent, etc. Decoctanol and β-(3, 5-di-tert-butyl-4-hydroxyphenyl) methyl propionate are reacted with sodium methoxide as catalyst and dimethyl sulfoxide as solvent at 130 ℃ for 2-3h to prepare antioxidant 1076(2082-79-3). This is an excellent non-polluting non-toxic antioxidant, widely used in polyolefin, polyamide, polyester, polyvinyl chloride, polystyrene, ABS resin to expand various rubber petroleum products. commonly used in the manufacture of surfactants, can also be used in the preparation of drugs and cosmetics commonly used in the production of surfactants, can also be used in the production of drugs and cosmetics intermediates, surfactants, lubricants, gas chromatography comparison sample. |
| Production method | It can be prepared by hydrolysis of giant whale oil, or by hydrogenation of stearic acid under the catalysis of copper chromate, or by reducing ethyl stearate with saturated ethanol. It can also be obtained by controlling the polymerization reaction of ethylene under the action of alkyl aluminum, and then by carbonyl synthesis to obtain decaoctanol. |
| category | flammable liquid |
| toxicity classification | low toxicity |
| acute toxicity | oral-rat LD50: 20000 mg/kg |
| stimulation data | skin-rabbit 500 mg/24 hours mild; Eyes-rabbit 100 mg/24 hours mild |
| flammability hazard characteristics | flammable; combustion produces stimulating smoke |
| storage and transportation characteristics | warehouse ventilation and low temperature drying |
| fire extinguishing agent | dry powder, foam, sand, water |
| auto-ignition temperature | 842 °F |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 20:49:11
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Downstream Products for 1-Octadecanol