1-Octadecanol #CAS112-92-5
CAS Number:112-92-5
Chemical Formula:C18H38O
Synonyms:
Octadecanol, 1-
Octadecyl alcohol, Stearyl alcohol
Stearyl Alcohol Pastilles
Appearance:White or off-white flaky or granular solid.
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
1-Octadecanol #CAS112-92-5
Stearyl alcohol, or 1-octadecanol, is an organic compound classified as a saturated fatty alcohol with the formula CH3(CH2)16CH2OH. It occurs as hard, white, waxy pieces, flakes, or granules, which have a slight characteristic odor and a bland taste. It is soluble in alcohol, acetone, and ether, but insoluble in water. Furthermore, it is combustible.
Stearyl alcohol is a long-chain saturated fatty alcohol. It is insoluble in water, soluble in hot ethanol, ether and other organic solvents. It is chemically stable under neutral, weakly acidic and weakly alkaline conditions and cannot be hydrolyzed under normal circumstances. It can undergo esterification reaction with organic acids to form corresponding esters. When heated together with strong oxidants, oxidation reaction will occur to generate aldehydes and carboxylic acids. It has good compatibility with oils, surfactants and most cosmetic raw materials. It has low volatility at room temperature. It will not undergo violent chemical reactions under conventional storage and application conditions. It can react with concentrated sulfuric acid to produce sulfated products.
Applicaion of 1-Octadecanol
1-Octadecanol is used as a surfactant in cosmetics. It effectively moisturizes hands and face with pheohydrane, which is a complex derived from the microalgae Chlorella Vulgaris and hydrolyzed algin found in sea water. It is a saturated alcohol of high purity and can substitute for cetyl alcohol in pharmaceutical dispensing, in cosmetic creams, for emulsions, textile oils and finishes, as antifoam agent, lubricant, viscosity agent, builder, and chemical raw material.
Stearyl alcohol, also called octadecanol, is a long-chain saturated fatty alcohol widely used in cosmetics, personal care, pharmaceutical and chemical industries. It acts as thickener, emulsion stabilizer, consistency regulator and softener in creams, lotions, hair conditioners, hair masks and ointments. It helps increase the viscosity of emulsion systems, inhibit phase separation, and deliver smooth, non-greasy skin feel. It can improve the ductility of paste products and enhance the water retention performance of the formula. In pharmaceutical field, it is used as ointment base and lubricant for topical preparations, which facilitates even spreading of active ingredients on skin. In chemical industry, it is the key raw material for synthesizing stearyl alcohol ethoxylates, stearyl sulfate and other surfactants. It can also be used to manufacture lubricants, plastic additives, defoamers and perfume fixatives. In textile processing, it is applied as fiber softening finishing agent to improve fabric smoothness and hand feel.
| 1-Octadecanol Chemical Properties |
| Melting point | 56-59 °C (lit.) |
| Boiling point | 210 °C15 mm Hg |
| density | 0.812 g/mL at 25 °C (lit.) |
| bulk density | 300kg/m3 |
| vapor density | 9.3 (vs air) |
| vapor pressure | <0.01 mm Hg ( 38 °C) |
| refractive index | 1.4356 (estimate) |
| Fp | 185°C |
| storage temp. | 2-8°C |
| solubility | methanol: soluble10mg/mL, clear, colorless |
| form | Flakes |
| pka | 15.20±0.10(Predicted) |
| Specific Gravity | 0.812 |
| color | White |
| Odor | wh. unctuous flakes or gran., faint odor, bland taste |
| explosive limit | ~8% |
| Water Solubility | insoluble |
| Merck | 14,8805 |
| BRN | 1362907 |
| Henry's Law Constant | 1.2×10-2 mol/(m3Pa) at 25℃, Duchowicz et al. (2020) |
| Dielectric constant | 3.4(58℃) |
| Cosmetics Ingredients Functions | SURFACTANT - CLEANSING SURFACTANT - EMULSIFYING FRAGRANCE OPACIFYING REFATTING EMULSION STABILISING SKIN CONDITIONING - EMOLLIENT VISCOSITY CONTROLLING SURFACTANT - FOAM BOOSTING |
| Cosmetic Ingredient Review (CIR) | 1-Octadecanol (112-92-5) |
| InChI | 1S/C18H38O/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19/h19H,2-18H2,1H3 |
| InChIKey | GLDOVTGHNKAZLK-UHFFFAOYSA-N |
| SMILES | CCCCCCCCCCCCCCCCCCO |
| LogP | 7.4 |
| CAS DataBase Reference | 112-92-5(CAS DataBase Reference) |
| NIST Chemistry Reference | 1-Octadecanol(112-92-5) |
| EPA Substance Registry System | 1-Octadecanol (112-92-5) |
| Safety Information |
| Safety Statements | 24/25 |
| RIDADR | UN 1986 |
| WGK Germany | - |
| RTECS | RG2010000 |
| Autoignition Temperature | 842 °F |
| TSCA | TSCA listed |
| HS Code | 2905170000 |
| Storage Class | 11 - Combustible Solids |
| Hazardous Substances Data | 112-92-5(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: > 2000 mg/kg |
Fact Factory and Equipment Show
