Zhishang Chemical

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Zhishang Chemical

1,2-Pentanediol CAS 5343-92-0

Molecular Formula: C5H12O2

Formula Weight: 104.15

ZSpharmac: 1,2-Pentanediol Supplement

Product Name: 1,2-Pentanediol
CAS No: 5343-92-0
Purity: 99%

Basic Info

Product Name:1,2-Pentanediol
Place of Origin:Shandong, China
Brand Name:ZSpharmac
Type:Chemical Raw Materials
Appearance:Clear Colorless to Light Yellow Liquid
EINECS No.:226-285-3
Storage:keep in Dark Place,Sealed in Dry,Room Temperature
Provide:1,2-Pentanediol MSDS;
SigmaAldrich COA

What is 1,2-Pentanediol?

1,2-Pentanediol is a crucial organic intermediate utilized in the synthesis of propiconazole, a special fungicide for business plants; a superb moisturizing agent with anti-bacterial effect, it has a collaborating result with conventional chemicals and likewise helps Reducing the quantity of conventional chemicals in the formula is also an essential raw material for the production of polyester fibers, surfactants, drugs and various other items. It is used in various skin care products such as skin cream, eye lotion, skin lotion, child care items, sun block, and so on. In sun block items, it is much more useful to boost the water resistance of the product and the ability to liquify some active ingredients. helps to maintain formulas while additionally minimizing the sticky feel of solutions as a result of included polymers.

1,2-Pentanediol Properties:

Melting point 50.86°C (estimate)
Boiling point 206 °C (lit.)
density 0.971 g/mL at 25 °C (lit.)
refractive index n20/D 1.439(lit.)
Fp 104 °C
storage temp. Keep in dark place,Sealed in dry,Room Temperature
form Liquid
color Clear colorless to light yellow
Water Solubility miscible


1,2-Pentanediol Uses

  1. 1,2-Pentanediol has broad-spectrum anti-bacterial activity, can properly prevent Gram-negative microorganisms, favorable germs, yeast and also mold.
  2. As an emollient, it has excellent skin moisturizing residential or commercial properties, minimizing skin moisture loss, leaving skin soft and smooth, and improving the emollient properties of skin care products.
  3. 1,2-Pentanediol is a multifunctional ingredient with excellent inhibitory ability to microorganisms. Its ingredients are not registered as preservatives. It can be used in cosmetics and fully supports the concept of “zero added preservatives”.
  4. Mild and non-irritating, it reduces irritation and allergy caused by preservatives, and is a high-purity liquid emollient with broad-spectrum antibacterial effect.
  5. 1,2-Pentanediol is very compatible and can be added to the oil phase to improve the water resistance of sunscreen formulations.

1,2-Pentanediol Production Method

The preparation method uses 1-pentene, hydrogen peroxide and formic acid as raw materials, and the molar ratio is 1:1.5:4. The reaction equilibrium mixture was formed by the following procedure: 1-pentene and hydrogen peroxide (70%) were added slowly simultaneously to formic acid at 40-55°C, after addition, the mixture was stirred at 55°C for 1 h, Moved into a circulating reactor, which has a circulating pump and an overflow siphon, heated to 55°C and circulated, then added 1-pentene and formic acid, added from one adding tube, and added hydrogen peroxide from the other adding tube. An exothermic reaction occurs when the temperature is allowed to rise to 62-63 °C, these components are added according to a certain proportion and speed, and the balance operation is controlled by a circulating constant temperature device, and the reaction is stopped for about 8 hours to obtain a large amount of 1,2-pentanediol The formic acid ester was distilled off under reduced pressure to remove formic acid and water, and the obtained residue was hydrolyzed by adding 25% NaOH solution, solvent extraction, desolubilization and distillation to obtain 1,2-pentanediol, with a yield of 91%, mp.96 ~98℃/1.3kPa.

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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