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Refined Glycerine 99.7% (Malaysia Origin)

Refined Glycerine 99.7% (Malaysia Origin)
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Country Origin : Malaysia Appearence : Clear, Colorless Liquid
CAS No. : 56-81-5 H.S. Code : 1520.00.00
Formula : C3H8O3 Common Names : 1,2,3-propanetriol
IUPAC Name : propan-1,2,3-triol
Packaging : 1 @ 22 MT Flexible Tank, 22 MT / 20'FCL
  • Description
  • Application
Brief Overview

 

Refined glycerine, also known as glycerol or glycerin, is a simple straight chain sugar alcohol which has three hydroxyl groups, which results in glycerine being water-soluble and hygroscopic. It is a clear, colorless and odorless liquid that is viscous with a high boiling point. It tastes sweet naturally and has low toxicity. It has typical melting and boiling points of 17.8 ◦C and 290 ◦C respectively. It is derived naturally and from petrochemical feedstock. Due to its low toxicity and environmental friendliness, it is used in many applications, such as food, pharmaceuticals, cosmetics and personal care items. It is also a versatile and valuable by product from biodiesel production. Around 950,000 tons are produced in the United States and Europe annually.

 

Manufacturing Process

Glycerine is obtained from the saponification or transesterification of triglycerides. Triglycerides are esters of glycerol with long chain carboxylic acids, which are found in fats and oils. The by-product formed is salts of long chain carboxylic acid. Crude glycerine also comes from the production of biodiesel through the transesterification process. Triglycerides are reacted with an alcohol, for example ethanol with a small amount of base as a catalyst to give esters of fatty acids and glycerol.

Synthetic glycerine can be obtained from sources other than triglycerides, such as from propylene, via the chlorine process or epichlorohydrin process, and the chlorine free processes. For the epichlorohydrin process, propylene is chlorinated to form allyl chloride, which is oxidized to give dichlorohydrins with hypochlorite. Dichlorohydrin then reacts with strong base to give epichlorohydrin, which is hydrolyzed to give glycerine. The chlorine free process involves obtaining glycerine from acrolein and propylene oxide.



Food Industry

Glycerol is used in foods and beverages to keep foods moist, to sweeten foods, as a solvent and it may be used as a food preservative. It is used as filler in commercial low fat foods such as cookies, and also as a thickening agent in food products such as liqueurs. It is used as a substitute for sugar because it does not result in cavities as bacteria do not feed on glycerine.

 

Pharmaceuticals Industry

Glycerol is used to improve smoothness and lubricating properties, and to retain moisture. It is found in a wide range of medical and pharmaceutical products, such as cough syrups, and also in personal care products such as mouthwashes. It is also a component of glycerin soap with essential oils added for fragrance, and the soap is used by people with sensitive skin due to glycerine’s water retaining properties.

 

Solvent

Glycerine is able to form strong hydrogen bonds with water and thus glycerol-water bonds are preferred over water-water hydrogen bonds. Thus, the formation of ice is hindered unless the temperature is made very low. Such antifreezing agents are used in automobiles due to glycerine being non-toxic despite it being replaced by ethylene glycol.

 

Intermediate Chemicals

Glycerine is used to produce other chemicals such as nitroglycerin, which is used in explosives and propellents. It is used to produce allyl iodide from the elements phosphorus and iodine, which is used in products such as polymers, preservatives, organometallic catalysts and pharmaceuticals.