Product

What is Crude Glycerine

This product is a co-product in the manufacturing of oleo-chemical products. Some of it generating processes are production of fatty acids production of fatty alcohols production of methyl esters production of biodiesel and soaps. There are many Crude Glycerine applications.

One of the commercial processes that manufactures this chemical as a by-product, is the treatment of triglycerides with an alcohol such as ethanol, in the presence of a catalytic base to give ethyl esters or fatty acids with crude glycerine. Before being used, most of the time this chemical will have to be purified to Refined Glycerine first. It ranges from around 65% to 85% while Refined Glycerine mostly around 99.5% to 99.7%, USP or BP grade is also available.

Crude Glycerine Base

Manufacturing Process

crude glycerine manufacturing chart

Triglycerides are treated with ethanol to produce crude glycerine in the presence of a catalytic base to yield ethyl esters of fatty acids. Before being used, crude glycerine will have to be purified to Refined Glycerine most of the time. USP or BP grade of crude glycerine ranges from around 65% to 85%, while refined glycerine is mostly 99.5% to 99.7%.

chemical tubes

Crude Glycerine Applications

Food Industry

Glycerine is used in foods and beverages to keep the food moist, make it sweet, serve as a solvent, and be used as a food preservative. It is used as a filler in commercial low-fat foods such as cookies and a thickening agent in food products such as liqueurs. Additionally, glycerine may be used as a sugar substitute. Bacteria do not feed glycerine, hence it does not cause cavities.

Glycerine is used as a humectant because of its hygroscopic property. By controlling the moisture in food, increases the shelf life and ensures the stability of the product. For example, in meat, cheeses, etc. However, crude glycerine must be purified to fit the food standards. It acts as a sweetener and a solvent for food flavoring and coloring. Crude glycerine is also used to manufacture glycerides, which can be used as emulsifiers, as a filler in low-fat food products like cookies, biscuits, etc.

Intermediate Chemicals

Glycerine is used in the production of nitroglycerine for explosives and propellants. Moreover, it can produce allyl iodide with the addition of phosphorus and iodine. They are commonly applied as polymers, preservatives, organometallic catalysts, and pharmaceuticals, etc.

Solvent

Glycerine can form strong hydrogen bonds with water, so glycerol-water bonds are superior to water-water hydrogen bonds. Therefore, the formation of ice is hindered unless the temperature is very low. This antifreeze is used in automobiles because glycerine has low toxicity despite being restored by ethylene glycol.

Pharmaceuticals Industry

Glycerine is used to improve smoothness and lubricity and maintain moisture. It is widely used in a variety of medical and pharmaceutical products, such as cough syrup and personal care products, such as mouthwashes. It is also a component of glycerine soap, which adds essential oils for fragrance. Because of the water-retaining properties of glycerine, soap is used by people with sensitive skin.

Triglycerides are treated with ethanol to produce crude glycerine in the presence of a catalytic base to yield ethyl esters of fatty acids. Before being used, crude glycerine will have to be purified to Refined Glycerine most of the time. USP or BP grade of crude glycerine ranges from around 65% to 85%, while refined glycerine is mostly 99.5% to 99.7%.

Personal Care Industry

Crude glycerine is used in personal care products as a humectant, solvent, lubricant. It is even added to toothpaste, mouthwash, and skin lotions.

Medical and Pharmaceutical Industry

Crude glycerine is used as an excipient in medical formulations to improve smoothness and provide lubrication, owing to its viscous property. It is also used as a humectant and is added to cough syrups, tonics, expectorants for its sweet taste. However, crude glycerine must be purified to fit the pharmaceutical standards.

Chemical Industry

Crude glycerine acts as a raw material for the manufacture of polyols for the production of foams. It is used in the polymer industry as a softener and a plasticizer to impart flexibility and toughness. Crude glycerine is utilized as a filler in surface coatings and paints. It is used in the manufacturing of paper as a plasticizer, humectant, and lubricant, and it is even used to make alkyd resins cellophane for meat casings, collagen casings that have medical applications, etc.

Product Identification

Physical and Chemical Properties

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