Glycerol CAS# 56-81-5

Glycerol, Promotion Season Now in Store and Free Sample for Testing with Factory Price
  • Appearance: Colorless and transparent liquid
  • Assay: 99. 0%min
  • Packaging: 200kg/drum
  • Sample: Available

Quality Control of Glycerol

Chemical Structure
Glycerol CAS# 56-81-5
Packing of Glycerol

Description of Glycerol

Glycerol (also called glycerine or glycerin; see spelling differences) is a simple polyol compound. It is a colorless, odorless, viscous liquid that is sweet-tasting and non-toxic. The glycerol backbone is found in all lipids known as triglycerides. It is widely used in the food industry as a sweetener and humectant and in pharmaceutical formulations. Glycerol has three hydroxyl groups that are responsible for its solubility in water and its hygroscopic nature.

Basic Info of Glycerol

Basic Info

Chemical Name






Molecular Formula


Molecular Weight






Safety Info



Safety Statements


HS Code


WGK Germany



UN 1282 3/PG 2

Risk Statements

R36; R20/21/22; R11

Hazard Codes


Numbering system

EINECS number


MDL number



Appearance & Physical State

Clear, colorless, viscous liquid



Boiling Point


Melting Point


Flash Point


Refractive Index


Water Solubility

>500 g/L (20 ºC)


Stable. Incompatible with perchloric acid, lead oxide, acetic anhydride, nitrobenzene, chlorine, peroxides, strong acids, strong bases. Combustible.

Storage Condition


Vapor Density

3.1 (vs air)

Vapor Pressure

<1 mm Hg ( 20 °C)

Share on facebook
Share on twitter
Share on linkedin

What is Glycerol?

With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is Glycerol which has developed particularly rapidly in recent years. Do you know about Glycerol?


The official answer: Glycerol, chemical formula C3H8O3, colorless, odorless, sweet, clear viscous liquid in appearance, is an organic substance that can absorb moisture from the air and also absorb hydrogen sulfide, hydrogen cyanide, and sulfur dioxide. It is insoluble in benzene, chloroform, carbon tetrachloride, carbon disulfide, petroleum ether, and oil, and is the backbone component of triglyceride molecule.

What’s the application of Glycerol?

Glycerin (glycerol; propanetriol) is a humectant used in moisturizers. It is water-binding and able to draw and absorb water from the air, thus helping the skin retain moisture. glycerin has been studied extensively for its hydrating abilities. Based on the data available, glycerin has been established as a good skinmoisturizing agent.

The industrial production methods of glycerin can be divided into two categories: the method of natural oils and fats as raw materials, the resulting glycerin is commonly known as natural glycerin; propylene as a raw material synthesis method, the resulting glycerin is commonly known as synthetic glycerin.

1.natural glycerin production before 1984, glycerin is all recovered from the by-products of animal and vegetable fats soap production. Until now, natural oils and fats are still the main raw material for the production of glycerin, about 42% of the natural glycerin in the base from soap-making by-products, 58% from fatty acid production. Soap industry in the saponification reaction of fats and oils. Saponification reaction products are divided into two layers: the upper layer mainly contains fatty acid sodium salts (soap) and a small amount of glycerol, the lower layer is waste lye, containing salts, sodium hydroxide glycerol dilute solution, generally containing 9-16% glycerol, inorganic salts 8-20%. Oil and grease reaction. Oil hydrolysis of glycerol water (also known as sweet water), its glycerol content is higher than the waste soap making solution, about 14-20%, inorganic salts 0-0.2%. In recent years, continuous high-pressure hydrolysis has been commonly used, the reaction does not use catalysts, the resulting sweet water generally does not contain inorganic acids, purification methods than the waste lye simple. Whether it is soap making waste liquid, or grease hydrolysis to get glycerol water containing glycerol is not high, and all contain a variety of impurities, the production process of natural glycerol includes purification, concentration to get crude glycerol, and crude glycerol distillation, decolorization, deodorization of the refining process. This process is described in detail in some books and journals.

2.The production of synthetic glycerol from propylene can be summarized into two main categories, namely chlorination, and oxidation. Nowadays, propylene chlorination and oxidation of propylene indefinitely acetic acid are still used in industry.

(1) Propylene chlorination method is the most important production method in synthetic glycerin, which includes four steps, namely high-temperature chlorination of propylene, hydrochlorination of chloropropene, saponification of 1,3-DCP, and hydrolysis of epichlorohydrin. Hydrolysis of epichlorohydrin to glycerol is carried out at 150°C and 1.37 MPa CO2 pressure in an aqueous solution of 10% hydroxide and 1% sodium carbonate to produce an aqueous solution of glycerol containing sodium chloride with a glycerol content of 5-20%, which is concentrated, desalted and distilled to obtain glycerol with a purity of 98% or more.

(2) Propylene peracetic acid oxidation method Propylene and peracetic acid act to synthesize propylene oxide, which is isomerized to alkene as propanol. The latter then reacts with peracetic acid to produce propylene oxide (i.e. glycidol), which is finally hydrolyzed to glycerol. The production of peracetic acid does not require a catalyst, and the gas-phase oxidation of acetaldehyde with oxygen results in 11% conversion of acetaldehyde and 83% selectivity of peracetic acid at atmospheric pressure, 150-160°C, and a contact time of 24s. The above latter two reactions were carried out continuously in a specially structured reaction distillation column. After the feedstock allyl alcohol and ethyl acetate solution containing peracetic acid are fed into the tower, the tower kettle is controlled at 60-70°C and 13-20 a. Ethyl acetate solvent and water are evaporated from the top of the tower, and the tower kettle yields to aqueous glycerol solution. This method has higher selectivity and yield, uses peracetic acid as an oxidant, can be used without catalyst, has faster reaction speed, and simplifies the process. The production of 1t of glycerol consumes 1.001t of allyl alcohol, 1.184t of peracetic acid, and 0.947t of acetic acid as a by-product. at present, the production of natural glycerol and synthetic glycerol account for almost 50% each, while the propylene chloride method accounts for about 80% of the production of Hechi glycerol. Natural glycerol accounts for more than 90% of the total production in China.



Sincere to the customer and in good faith of quality is our forever followed motto. It’s the basement to be a human and do business. We take all responsibility for our products and service sincerely. We are a company integrating R&D, production, and sales. The design, research, and development of pharmaceutical intermediates including more than 330 kinds of pharmaceutical intermediates such as Anti-infectives, Cardiovascular and Cerebrovascular Systems, Digestive System, Santi-tumor, Nervous System, Geriatric Drugs, and Gynecological Drugs. At the same time, we have more than 4,000 factories in strategic cooperation with nearly 50,000 chemical products, so we can provide you with a one-stop purchasing service, which greatly saves customers’ procurement costs and time.

Hello, I’m Pew Ni, the chemical products one-stop solution expert.

Hi, I‘m Peter Ni, the founder of Sincere-Chem, I’ve been running a company in China that exporting chemicals, pharmaceuticals, and intermediates for over 70 countries now. And a range of 50,000 products with the best quality and competitive price to meet your different purchasing needs.

CEO Email:

CEO Phone Number:
+86-188-6575 9396

CEO WhatsApp:
+86-188-6575 9396

Request A Free Quote

Keywords of Glycerol

Glycerol, 56-81-5 , buy Glycerol, Glycerol supplier, purchase Glycerol, Glycerol cost, Glycerol manufacturer, order Glycerol, high purity Glycerol


United Kingdom Giles
United Kingdom Giles
Read More
Peter has been my partner for many years, we met at the Shanghai CPHI Fair in 2014, for the first time I didn't have much interest in Peter's products because our company had a stable supplier. Although we didn't work together, Peter would often send me important news and interesting trend information about the industry, so we became good friends, even though I didn't place any orders with him during this time, even if it was a sample order. In September 2016, our original supplier was unable to provide us with the quality and delivery guarantees we needed, so I first thought of Peter and his company. Until now, we have maintained a very good personal friendship in addition to a steady business relationship.
India Shikhar
India Shikhar
Read More
In all my years of sourcing from China, I first time to found that working with Sincere Chemical was so good, they helped me with all the production and delivery as well as a lot of technical expertise, which saved me a lot of time. When I first approached Peter for a quotation for Optical Brightener, he made me a detailed quotation with not only prices but also foreign trade details, company profile, company strengths, R&D capabilities, production capacity, packaging methods, raw material control, environmental protection, and much more. This information was a very important reference for me in making purchasing decisions. Sincere Chemical is a trustworthy supplier and I believe our business will grow from strength to strength!
Korea Kim
Korea Kim
Read More
Hi, I'm Kim, I'm Peter's partner and although I don't like him very much (because he never gives me more money for my prices, hahaha) I'm still willing to write him customer feedback. As an international buyer, I have to deal with a lot of things every day and my inbox is often full of development letters. It's a lot of junk and meaningless pleasantries, which I don't like that much, but Peter's emails always give me a better understanding of the product and the industry. I am also very pleased with his work ethic, and I am very happy with his work every time I work with him, not only in providing quotations but also in facilitating all the details of my work so that I can concentrate more on other things, so he is the best supplier for me. Although his prices are not the lowest among all suppliers, his products give me the greatest peace of mind.
USA Franklin
USA Franklin
Read More
Sincere Chemical team visited our USA factory in the year of 2017. We think highly of cooperation with them. We thanked you for the past excellent orders and best product quality. We also talked about some new products for future orders. We will be still in strategic cooperation in the future and help each other.
Canada Kate
Canada Kate
Read More
I just got the product. The quality is awesome. I’m very happy. Hope to place soon a new order in your company. Also wish for our future business.
Read More
Sincere Chemical is a reliable and professional company. Not only on exporting but also their professional team service. Their team gave us so many suggestions for our new project. We are really satisfied with their awesome service and best product quality. Sincere-Chem’s vendor code is 51465768 in our cooperated vendor list system.
Read More
I have visited Sincere Chemical company in the year 2018. Their company can be considered as one of the most professional, customer-focused, and product quality-driven companies that I have worked with in recent years.
Brazil Aline
Brazil Aline
Read More
We are a pharmaceutical products manufacturer in Brazil. I’m happy to cooperate with Sincere Chemical especially cooperate with Peter. Peter is patient and friendly. I’m satisfied with his 24*7 hours service. We are not only cooperators but also best friends with each other.
Mexico Gonzalo
Mexico Gonzalo
Read More
Great service and very supportive. This is my first order and I feel fortunate to be with Peter and his company. Product received was the right good quality product, so my review is more related with the quality, service and shipment. Thank you for sending. next time I will order again. Good supplier...