Zhishang Chemical

Welcome to Zhishang Chemical      +86-176 5311 3209     Simon@sdzschem.com

Zhishang Chemical

Stearyl Alcohol CAS 112-92-5

Molecular Formula: C18H38O

Formula Weight: 270.49

ZSpharmac: Stearyl Alcohol Supplier

Facebook
Twitter
LinkedIn
Pinterest
WhatsApp
Email
Product Name: Stearyl Alcohol
CAS No: 112-92-5
Purity: 99%

Navigation Bar

Basic Info

Product Name:Stearyl Alcohol
Other Names:1-Octadecanol
CAS:112-92-5
Place of Origin:Shandong, China
Brand Name:ZSpharmac
Type:Cosmetic Raw Materials
Appearance:White Flakes
EINECS No.:204-017-6
Storage:2-8°C
Provide:Stearyl Alcohol MSDS;
Stearyl Alcohol COA

What is Stearyl Alcohol?

As one of the important platform compounds, Stearyl Alcohol is the basic chemical raw material for synthesizing surfactants, detergents, plasticizers and other fine chemicals. It is widely used in textiles, daily chemicals, papermaking, food, medicine, leather, etc. field. my country is a big country of consumption of fatty alcohol. With the improvement of people’s living standards, the demand for fatty alcohol series products and their derivatives is also gradually increasing.

Stearyl Alcohol, also known as Stearyl Alcohol, is a white waxy small crystal with a fragrance. The relative density is 0.8124 (59/4°C), the melting point is 59°C, and the boiling point is 210.5°C (15×133.322Pa). Insoluble in water, soluble in ethanol, ether and acetone. It can have a sulfonation reaction with concentrated sulfuric acid, but it does not have a chemical effect in the case of alkali. At present, stearyl alcohol is prepared by hydrogenation using stearic acid or methyl stearate as raw materials in industry, using Cu-based catalysts, and under the action of alkyl aluminum, heptadecene fractions can be obtained by controlling the polymerization of ethylene. , and then oxo to obtain octadecanol. The catalysts dominated by Cu-Cr have high pollution and high requirements for the reaction. Therefore, in recent years, scholars have continued to study Cu-based catalysts.

The catalytic performance of the catalyst for the preparation of alcohol by ester hydrogenation was investigated; the Cu-Zn-Zr catalyst was used to study the hydrogenation of fatty acid methyl ester to fatty alcohol, and the yield was 70%; the Cu-Al-Ba catalyst was investigated, and the product yield was high, but The reaction conditions are harsh and the catalyst dosage is large. The effect of the structure of CuO/ZnO/Al 2O3 catalyst on the preparation of fatty alcohol by oil hydrogenation was studied, and the product yield was 98%. The effect of free fatty acid on Cu-based catalysts in the hydrogenation of fatty acid methyl esters was studied. Free acid led to the decrease of catalyst activity, and the damage of free acid to catalyst could be reduced by adding alkali.

Stearyl Alcohol Property

Melting point 56-59 °C (lit.)
Boiling point 210 °C15 mm Hg
density 0.812 g/mL at 25 °C (lit.)
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
pka15.20±0.10(Predicted)
form Flakes
color White
Specific Gravity0.812
explosive limit~8%
Water Solubility insoluble

 

Stearyl Alcohol Uses

  1. Stearyl Alcohol can be used as opposed to hexadecyl alcohol, such as spreading agent in drugs, lotion as well as emulsifier in cosmetics, and also utilized as heat preservation agent for paddy areas, reservoir covering representative, defoaming agent, brightening representative, lubricant, etc. Stearyl alcohol can be made use of in the production of peregrine, resin and also artificial rubber, color-picking film couplers, etc. Octadecanol as well as β-(3,5-di-tert-butyl-4-hydroxyphenyl) methyl propionate can be prepared by responding with salt methoxide as stimulant and also dimethyl sulfoxide as solvent at 130 ℃ for 2-3h. Oxygen 1076 (2082-79-3). This is an outstanding non-polluting safe antioxidant, extensively used in polyolefin, polyamide, polyester, polyvinyl chloride, polystyrene, ABS resin to expand various rubber oil items.
  2. Stearyl Alcohol is generally utilized in the manufacture of surfactants, as well as can also be made use of in the prep work of pharmaceuticals and also cosmetics.
  3. Stearyl Alcohol is used for intermediates, surfactants, lubricants, GC comparison examples.

Application of Stearyl Alcohol

1. Preparation of Stearyl Alcohol polyoxyethylene ether.
Stearyl Alcohol polyoxyethylene ether is a good dye leveling agent with excellent emulsifying and leveling properties, good temperature viscosity and biodegradability. The product is non-ionic in alkaline and neutral media and cationic in acidic media. It is used as a leveling agent for acid complex dyes, which can reduce the amount of sulfuric acid in the dyeing bath and reduce the strength of fabric damage; it can also be used as a leveling agent for neutral dyes, vat dyes, and a stripping agent for wool and nylon fabrics.

The preparation method takes Stearyl Alcohol and ethylene oxide as raw materials, and carries out a polymerization reaction in the presence of a catalyst to obtain; the weight ratio of the Stearyl Alcohol and ethylene oxide is 1: 0.145~3.05; the catalyst is solid methanol Any one or more mixtures of sodium, sodium methoxide methanol solution, KOH, NaOH, etc., are added in an amount of 0.05 to 0.6% by weight of the obtained stearyl alcohol polyoxyethylene ether. By reasonably determining process parameters and conditions such as the ratio of raw materials, the amount of catalyst, the polymerization reaction temperature and time, the above method has mild reaction conditions, easy control, low equipment requirements, and the obtained stearyl alcohol polyoxyethylene ether has a light color and stable performance. The range of adjustable empty molecular weight is large, and the dye leveling agent product with the required performance can be obtained by adjusting the molecular weight, which can meet the needs of various occasions.

2. Preparation of maleic anhydride type reactive emulsifier.
The method includes the following steps: firstly preparing an intermediate of glycidyl trimethyl ammonium chloride, mixing epichlorohydrin and trimethylamine, and reacting at 25-30 DEG C for 4-5 hours to prepare glycidyl trimethylamine ammonium chloride intermediate; prepare maleic anhydride Stearyl Alcohol ester intermediate, mix maleic anhydride and stearyl alcohol, react at 70~75 ℃ for 3~4 hours, prepare maleic anhydride stearyl alcohol ester intermediate The above-mentioned stearyl maleic anhydride intermediate is heated to 110~115 ℃, and the glycidyl trimethyl ammonium chloride intermediate is slowly added to the stearyl maleic anhydride intermediate, The addition time is controlled to be 3 to 5 hours, the temperature rises after the addition is completed, and when the temperature of the material reaches 120° C., the temperature is kept constant for 1 hour to obtain a maleic anhydride type reactive emulsifier.

3. Preparation of octadecyl acrylate.
First, add a polymerization inhibitor with 0.3-0.8% of stearyl alcohol by mass in Stearyl Alcohol, heat to make it all melted, and then add acrylic acid with 1.2-1.5 times the molar weight of stearyl alcohol and 0.5-1.2% of stearyl alcohol in turn. The catalyst is stirred and mixed; the mixture is heated to 60 ~ 120 ° C, refluxed for 2 ~ 3 hours, the moisture generated by the reaction is separated, the temperature is continued to be raised to 130 ~ 140 ° C, the reaction is incubated for 2 ~ 4 hours, and the unreacted is removed by distillation under reduced pressure. acrylic acid and residual water were obtained, and then the reaction product was first washed with caustic alkali aqueous solution, and then washed with water until neutral; finally, vacuum-dried at 40 °C for 6-8 h to obtain waxy solid stearyl acrylate.

The method has the advantages of fast reaction rate, high reaction selectivity, short reaction time, high yield of ester, easy removal of product water, etc., does not use azeotroping agent, avoids serious pollution problems caused by toxic solvents, and belongs to Cleaner production process.

Preparation of Stearyl Alcohol

Method 1: The Cu-Al-Ba catalyst prepared by the coprecipitation method has high activity and selectivity for the liquid-phase catalytic hydrogenation of methyl stearate to prepare octadecanol. The catalyst prepared by countercurrent co-precipitation method and treated with organic solvent and then dried has smaller CuO grains, which is beneficial to improve the catalytic activity.

The optimal synthesis process conditions are as follows: the countercurrent co-precipitation method is used, the catalyst is prepared by drying after treatment with organic solvent, the reduction temperature is 250-400 °C, w (catalyst) = 3%, the reaction pressure is 6MPa, and the reaction temperature is 240 °C. Time 5h, under this process condition, the transformation efficiency of methyl stearate is 998%, and the selectivity of Stearyl Alcohol is 96.6%. The methyl stearate was treated with 0.02 mol/L sodium hydroxide, the water layer was removed after standing for layering, and then the obtained methyl stearate was dried at 80°C. The purpose is to reduce the acid value and reduce the effect of residual stearic acid on catalyst stability. Its reaction formula is as follows:

Methyl stearate is hydrogenated and reduced under the action of a catalyst to generate Stearyl Alcohol and methanol. Its reaction formula is as follows:

Side reaction: hydrodecarboxylation of methyl stearate generates heptadecane:

When octadecanol is formed, octadecanol is further hydrogenated to octadecane under the action of Cu catalyst.

Method 2: a kind of method for preparing Stearyl Alcohol by hydrodeoxygenation of stearic acid, in autoclave, add stearic acid, n-heptane and Ni/m-ZrO Catalyst, wherein the mass/volume of stearic acid and n-heptane The ratio is 0.4/100 (g/ml), H2 is charged, and the reaction is stirred at 240° C. with a rotating speed of 1000 r/min. The mass of the stearic acid is 0.4 g, and the volume of n-heptane is 100 mL. The active component of the catalyst is Ni, the carrier is a high-defect monoclinic phase nano ZrO2, and the specific surface area is 50-150 m2/g. The loading amount of catalyst Ni is 3%, the catalyst mass is 8-10% of the mass of stearic acid, preferably 0.036g, and the H2 pressure is 5.5MPa.

About Products:
If you need Stearyl Alcohol, a cosmetic raw material, please contact our service staff directly, we will provide you with high-quality products at the best price.
As an experienced Stearyl Alcohol manufacturer and supplier, ZSpharmac will provide Stearyl Alcohol raw materials to customers all over the world for a long time.
Over the years, the company has been adhering to the spirit of “integrity management, strict quality control, and customer first”, and has won unanimous praise from domestic and foreign customers.

Company Profile and Corporate Culture

Company Profile:

ZhiShang Chemical is owned by ZhiShang Group is a professional new-type chemicals enterprise combined into research and development, production and sales .

The company’s competitive product is pharmaceutical raw materials and intermediates (especially carbohydrate derivatives Series), In recent years, the company has made a major breakthrough in food and feed additives, plant extraction, industrial chemicals industry .

The company insists on the spirit of “sincere management, strict quality control, customer as god” , get consistent high praise from customers at home and abroad.

Corporate Culture:

OUR MISSION
Help China Chemicals to benefit the happiness of human life
OUR VISSION
Become the most trusted chemical supplier in the world
OUR BUSINESS PHILOSOPHY
Striver – oriented, enrich employees, customer first, deep service, seek development
OUR VALUES
Be prepared for danger in times of peace, forge ahead actively, unity and cooperation, and be brave to fight

About Us

The production base is located in Zhangqiu chemical industry park and Tai’an high-tech chemical industry park. laboratory and workshop in strict accordance with the GMP standard and the product fit national ISO9001 and ISO2000 standards.

“Zhishang” products are exported to Europe, North and South America, the Middle East, Asia Pacific and Africa area, so as to establish a long-term and stable cooperation relationship with customer in the world.

Company Info
  • Business Type: Manufacturer
  • Product Range: Cosmetic raw materials
  • Products/Service:Cosmetic raw materials (flavors and fragrances,antioxidant products, moisturizing and hydrating, whitening agents, cosmetic additives)
  • Total Employees: 51~100
  • Capital (Million US $): 10000000RMB
  • Year Established: 2016
Production Capacity
  • No. of Production Lines : 8
  • No. of QC Staff : 5 -10 People
  • OEM Services Provided : yes
  • Factory Size (Sq.meters) : 3,000-5,000 square meters
  • Certificate: ISO9001 , CE , GMP , API , MSDS
  • Factory Location : Diao Town Industry Park, Zhangqiu City, Jinan City, Shandong Province, China.

Service

Pre-Sales Service

* Prompt reply and 24 hours online, professional team to provide best price and high quality product.

* Sample testing support.

* Every batch of products will be tested to ensureits quality.

*The packing also can be according the customers` requirment.

*Any inquiries will be replied within 24 hours.

*we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. If your markets have any special requirements, let us know.

 

After-Sales Service

*The fact of logistics information monitoring.

* Any questions about the product can be consulted at any time.

*Product has any problem can return.

FAQ

Do you accept sample order?

We will make samples before mass production, and after sample approved, we’ll begin mass production. Doing 100% inspection during production, then do random inspection before packing.

 

HOW TO CONFIRM THE PRODUCT QUALITY BEFORE PLACING ORDERS?

You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.

What’s your MOQ?

Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.

Do you supply product report?

Yes. We’ll give you product analysis report before shipping.

  Is there a discount?

Different quantity has different discount.

Shipping

1. ≤50kg, Express delivery recommended, usually called as DDU service;

2. ≤500kg, Air shipping recommended, usually called as FOB, CFR, or CIF service;

3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;

4. For high value products, please select air shipping and express delivery for safe.

Get Stearyl Alcohol Quotation