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Undecenoic CAS 112-38-9

Molecular Formula: C11H20O2

Formula Weight: 184.28

ZSpharmac: Amrinone Supplement

Product Name: Undecenoic
CAS No: 112-38-9
Purity: 99%

Basic Info

Product Name:Undecenoic
Other Names:Undecenoic Acid
Place of Origin:Shandong, China
Brand Name:ZSpharmac
Type:Organic Chemical Raw Materials
Appearance:Pale Yellow Crystalline Low Melting Solid or Liquid
EINECS No.:203-965-8
Storage:Store Below +30°C.
Provide:Undecenoic MSDS;
Undecenoic COA

Undecenoic Preparation

With castor oil as raw material, the undecylenic acid crude product obtained through alcohol exchange, thermal cracking, addition, saponification and acidification treatment is directly put into the molecular distillation device feed tank 1, and is input into the first-stage thin-film distiller through pump M1 2 Carry out dehydration and degassing, and the operating conditions are controlled at vacuum degree-0.085–0.090MPa, temperature of 60-70°C, and feed rate of 15-20kg/h; The pump M2 is directly input into the second-stage molecular distiller 3, and the operating conditions are controlled at a vacuum degree of 100Pa~-0.1MPa and a temperature of 50~60°C to remove low-boiling point aldehydes, alcohols, hydrocarbons, and neutral fatty impurities; After removing the Undecenoic acid crude product of low-boiling impurities, it is directly input into the third-stage molecular distiller 4 through the pump M4, and the operating conditions are controlled at a vacuum degree of 100Pa~-0.1MPa and a temperature of 80~85°C to obtain colorless or slightly yellowish of high-purity Undecenoic acid.

Undecenoic Properties:

Melting point 23-25 °C (lit.)
Boiling point 137 °C/2 mmHg (lit.)
density 0.912 g/mL at 25 °C (lit.)
refractive index n20/D 1.449(lit.)
Fp 300 °F
storage temp. Store below +30°C.
solubility water: insoluble
form Crystalline Low Melting Solid or Liquid
Colour Index 42650
color Pale yellow
Specific Gravity0.911 (25/25℃)
Water Solubility INSOLUBLE


Undecenoic Uses

  1. Undecenoic is an essential raw material for the synthesis of scents, such as scent γ-undecanalactone (also referred to as peach aldehyde), polycyclopentadecalactone, musk ketone, nonanal as well as nonanol, and so on. Likewise an antifungal representative, used to deal with skin mycosis (solution of professional athlete’s foot, etc).
  2. Undecenoic is used in the preparation of fragrances and fungicides.
  3. Undecenoic is used in the synthesis of spices such as gamma-undecalactone.

Undecenoic Functions and Indications

It is used to treat fungi of the skin and mucous membranes, and is used to treat skin fungal infections such as tinea capitis, tinea cruris, and tinea pedis, as well as fungal vaginitis. Best for athlete’s foot. It can also be used to produce zinc undecenoate, synthesize Y-undecalactone fragrance, and make nylon and other products.

According to bibliographical information, Undecenoic is based on castor oil as raw material, first obtains methyl 10-undecylate, then generates sodium Undecenoic by saponification with sodium hydroxide, and acidifies with dilute sulfuric acid to obtain 10-undecylenic acid. alkenoic acid. Undecenoic can also be synthesized by oxidation of olefins.

However, at present, most of the Undecenoic obtained from castor oil is a crude product, which contains more volatile components such as aldehydes, hydrocarbons, alcohols, esters, etc., as well as high-boiling fatty acids and polymer compounds. Molecules contain double bonds, which are sensitive to heat. When heated for a long time, polymerization or oxidative decomposition are easy to occur. Separating and purifying by the traditional distillation method often requires long-time heating, which is very easy to destroy the Undecenoic structure, which not only reduces the yield of undecylenic acid, but also produces more new impurities, making the purity of undecyenoic acid. If it is not high, it is difficult to meet the needs of medicinal and high-purity Undecenoic to synthesize other products.

Undecenoic Invention Contents

The object of the present invention is to provide a production method for purifying and purifying high-purity undecenoic acid that can overcome the shortcomings of the prior art.

The present invention uses castor oil as a raw material to separate and purify the crude Undecenoic obtained by alcohol exchange, thermal cracking, addition, saponification and acidification by a three-stage molecular distillation method to obtain high-purity Undecenoic products.

The specific production steps are as follows:

(1) first-stage thin-film distillation: the Undecenoic crude product is directly put into the molecular distillation equipment feed tank, and is input into the first-stage thin-film distiller through the feeding pump, and is controlled at vacuum tightness-0.085~-0. 095MPa, 50~80 ℃ of temperature, feed rate are to carry out dehydration, degassing under 15~30kg/h operating conditions;

(2) second-stage molecular distillation: the Undecenoic crude product through step (1) dehydration, degassing is directly input into the second-stage molecular distiller through feed pump, controlled at vacuum tightness 100Pa~-0.1MPa, Separating and removing low-boiling aldehydes, alcohols, hydrocarbons, neutral aliphatic impurities under temperature 50~70 ℃ of operating conditions, obtains the undecylenic acid crude product that removes low-boiling impurities;

(3) third-stage molecular distillation: directly input the undecylenic acid crude product through the removal of low-boiling impurity into the third-stage molecular distiller through feed pump, and operating conditions are controlled at vacuum tightness 100½~-0.1MPa, temperature 80 ~95 DEG C, isolate high boiler and obtain colorless or slightly yellow high-purity undecylenic acid fine product.

The equipment involved in the step (1) is a thin film evaporator; the equipment involved in the steps (2) and (3) is a molecular distillation secondary molecular still. Steps (1), (2), (3) are coordinated with each other, and continuous feeding and continuous discharging are adopted.

Described steps (1), (2), (3) three-stage molecular distiller system, involved material conveying pipeline and discharge pipeline are sandwich pipe and pass into 30~40 ℃ of hot water for insulation.

The molecular distillation equipment includes a molecular evaporator, a degassing and dehydration system, a feeding system, a heating system, a material conveying pipeline insulation system, a cooling vacuum system and a control system. Wiped-Film Style, which adopts Smith-type 45° diagonal chute scraper, the feed liquid flows through a heated vacuum chamber for evaporation; the material conveying pipeline and the discharging pipeline are heated by hot water There is a separator in the lower part of the molecular evaporator, the first stage separates water, the second stage separates high and low boiling point impurities, and the third stage separates high boiling point substances.

The vacuum chamber of the scraper type molecular distillation equipment is a cylindrical vacuum chamber. After the feed liquid flows through the heated cylindrical vacuum chamber, the scraping action of the feed liquid film is used to remove the volatile components from the non-volatile ones. The ingredients are still out.

This process is characterized by: short residence time of the feed liquid, sufficient cooling due to high vacuum performance, optimum mixing efficiency, and optimum mass and heat transfer. The result of this highly efficient thermal separation technology: minimal product degradation and highest product quality. The feed liquid (crude undecylenic acid) is exposed to the heated wall for a very short time (only a few seconds to a dozen seconds), which is partly due to the slotted scraper design, which forces the liquid to move downward and retains Time, film thickness, and flow characteristics are all tightly controlled, making them ideal for separation applications of heat-sensitive substances. In addition, this chute scraper does not throw material off the walls of the distiller, contaminating the separated light components. Compared with traditional column distillation equipment, falling film distillation equipment, rotary evaporator and other separation equipment, scraped surface molecular distillation equipment is recognized as much better.

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:

Help China Chemicals to benefit the happiness of human life
Become the most trusted chemical supplier in the world
Striver – oriented, enrich employees, customer first, deep service, seek development
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: Additive , Chemical Auxiliary & Catalyst , Organic Chemicals
  • Products/Service: Organic Intermediate,Inorganic Chemistry, APIs, Dyestuffs And Pigments, Fragrance And Spices, Food 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.


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.


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.



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.


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.

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