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2 3 Butanediol CAS 513-85-9

Molecular Formula: C4H10O2

Formula Weight: 90.12

ZSpharmac: 2 3 Butanediol Supplier

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Product Name: 2 3 Butanediol
CAS No: 513-85-9
Purity: 99%

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Basic Info

Product Name:2 3 Butanediol
Other Names:Butanediol
CAS:513-85-9
Place of Origin:Shandong, China
Brand Name:ZSpharmac
Type:Cosmetic Raw Materials
Appearance:Colorless to Pale Yellow Viscous Liquid
EINECS No.:208-173-6
Storage:Store Below +30°C.
Provide:2 3 Butanediol MSDS;
2 3 Butanediol COA

What is 2 3 Butanediol?

2,3-Butanediol is an alcoholic organic compound that exists as three stereoisomers, a chiral pair and a meso isomer. It is commonly used as a reagent, which is a colorless liquid. Slightly soluble in water, ethanol, ether, and acetone, it is the precursor for the preparation of various plastics and pesticides. Precautions: The agent should avoid inhalation; avoid contact with eyes, skin and clothing. Hygroscopic, sensitive to air. Store in a dry and cool place under nitrogen protection.

2 3 Butanediol Property

Melting point 25 °C (lit.)
Boiling point 183-184 °C (lit.)
density 1.002 g/mL at 20 °C (lit.)
vapor pressure <1 hPa (20 °C)
refractive index n20/D 1.433(lit.)
Fp 185 °F
storage temp. Store below +30°C.
solubility Chloroform, Methanol
pka14.67±0.20(Predicted)
form Viscous Liquid
color Colorless to pale yellow
PH7 (H2O, 20℃)Aqueous solution
explosive limit3.1-11.4%(V)
Water Solubility SOLUBLE

 

2 3 Butanediol Uses

  1. 2,3-butanediol makes use of sulfuric acid as an energizer, as well as responds with acetic acid at 140-150 ° C for 2 hrs to create 2,3-butanediol diacetate, which can be added to cream, together with can furthermore be made use of as a hygroscopic representative, plasticizer in addition to furthermore incorporating representative. 2,3-Butanediol remains in enhancement made use of as a solvent in addition to a raw material for synthetic products.
  2. 2,3-Butanediol can be utilized for the resolution of enantiomers, the reaction of asymmetric aldols, the crooked bosom of chiral acetals, the crooked β-elimination of chiral alkynyl acetals, as well as the crooked allyl Kylation, cyclization of chiral diene acetals, enantioselective epoxidation, diastereoselective cyclopropanation, homologation of boronic acid esters.

2,3-Butanediol Production Method

The production methods of 2,3-butanediol mainly include chemical method and microbial fermentation method. Due to the special structure of 2,3-butanediol-butanediol, chemical production of 2,3-butanediol consumes a lot of raw materials, complex process routes, large construction investment, and serious environmental pollution; while biological production of 2, 3-butanediol meets the requirements of green chemical industry and sustainable development. However, due to the high boiling point, high viscosity and high hydrophilicity of 2,3-butanediol, it is difficult to separate and purify 2,3-butanediol. Large, this process has always been the downstream key technology for the industrialization of biological preparation of 2,3-butanediol.

The separation and purification methods of 2,3-butanediol reported at home and abroad mainly include:

(1) spray drying method, which is about to pass high-temperature inert gas into the fermenter, so that the volatile gas is gasified, thereby separating 2,3-butanediol; (2) chemical conversion method, using formaldehyde or butyraldehyde and fermentation 2,3-butanediol in the liquid reacts, and the reaction product recovers 2,3-butanediol through distillation and acidification treatment; (3) activated carbon adsorption method, including activated carbon adsorption, acetone or dioxane Soxhlet extraction; (4) Countercurrent stripping method, including ethanol countercurrent stripping, filtration, rectification and separation of ethanol and other processes; (5) Solvent extraction method, through pH adjustment, heating, filtration, three-effect evaporation concentration, n-butanol extraction, acetic acid Butyl ester azeotropic distillation dehydration, esterification, and neutralization to obtain the diester form of 2,3-butanediol; (6) Fermentation-separation coupling method, including pervaporation, membrane distillation, vacuum membrane distillation, extraction Wait for the process. As can be seen from the research status at home and abroad, the separation and purification methods of 2,3-butanediol reported at present have very low separation efficiency and recovery rate of 2,3-butanediol; the process route is complicated, the energy consumption is high, and it cannot be realized Industrial production. Therefore, it is particularly important to develop an industrialized separation process that conforms to the characteristics of extracting 2,3-butanediol from a specific fermentation broth, is highly efficient, energy-saving, and environmentally friendly.

The Extraction Method of 2,3-Butanediol

A method for separating and extracting 2,3-butanediol, characterized in that the steps include:

(1) At first, obtain 2,3-butanediol filtrate after carrying out flocculation, filtration, membrane separation process with fermentation stoste, the mass ratio of 2,3-butanediol filtrate and n-butanol is 0.5: 1~1.5 : 1. Stir in the mixing tank to make the mixture completely;

(2) Next, after the feed liquid obtained after mixing step (1) enters the settling tank and leaves standstill for stratification, the lower floor raffinate continues to extract after being pumped back to the mixing tank, and the upper strata extract enters the rectifying tower;

(3) In the rectifying tower, the extraction solvent and water form azeotropic rectification and enter the top of the tower, a part of the overhead product is refluxed and re-enters the rectifying tower, and the other part of the product is sent back to the mixing tank by a peristaltic pump, and continues to 2, 3-butanediol aqueous solution is extracted; Described n-butanol is both extraction solvent, also is the dehydration solvent of follow-up azeotropic rectification; Extraction solvent and rectification solvent are n-butanol;

(4) After continuous extraction and rectification, 2,3-butanediol is concentrated in the tower still;

(5) when 2,3-butanediol mass concentration is 1.6%~1.8% in the clarifier water phase, stop extraction, rectifying circulation operation;

(6) Finally, continue to rectify the tower bottom liquid to obtain 2,3-butanediol product liquid, and the single extraction rate of 2,3-butanediol can reach more than 74%.

About Products:
If you need 2,3-Butanediol as 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 2,3-Butanediol manufacturer and supplier, ZSpharmac will provide 2,3-Butanediol 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, 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.

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