Glycerine - Industrial Applications and Facts

Glycerine is commonly called glycerol or glycerin. It is a sweet-tasting alcohol that is colorless and odorless. It becomes a gummy paste when frozen, although freezing it can only be achieved at very low temperatures. It melts at 18 degrees Celsius and boils at 290 degrees Celsius. Its chemical formula is C3H8O3. It is miscible in water and alcohol. However, it does not mix with oil. It is an excellent solvent. In fact, there are substances that dissolve better in glycerol than in water or alcohol.

The compound absorbs water from the air. This is why it is known as a hygroscopic substance. Suppose you leave a container of pure glycerine or glycerol in open air, it will become diluted as it joins water molecules. According to a speculation, a drop of this liquid in the tongue can raise a blister because it would draw out water from deep into the tongue tissue. But this remains a clever speculation.

The sweet-tasting alcohol is found in many skin moisturizing lotions and creams because of the water-retaining and water-absorbing capacity. Thus, it softens and smoothens the skin. It is believed, however, that this substance has other beneficial properties as well as simply moisturizing and attracting water molecules.

The compound originates from fats and oils. In fact, molecules of fat contain glycerol. One way to extract it from fats or oils is through saponification - a chemical reaction involving a fat and an alkali. This chemical reaction produces soap. Soap-making is a common source of this trihydric alcohol under discussion.

Extraction of glycerine from soap-making only began in 1889. Before this time, people did not know how to recover the compound. The only way to produce the compound is through candle-making using animal fats. In the year mentioned, an effective way to isolate glycerol from soap was at last discovered and later utilized. During this time and a few decades after, much of the compound went to production of nitroglycerin - a compound derived from glycerol used to make dynamites and explosives. During World War II, soap industry was not able to suffice the huge demands for the chemical. Here, synthetic production was implemented.

The production, separation and purification of glycerol involve a tedious process. When lye (sodium hydroxide) reacts with fat, soap is produced but is in mixture with glycerin. Homemade soap does not run through intrate procedure, so, the soap mixture contains all the glycerol that results from the reaction. Commercial soap-makers, although removes the compound from the mixture by adding salt. Salt curdles the soap, which is seen to float on top of the mixture. The floating soap is then scooped out or skimmed. This leaves the organic chemical with some impurities such as partially dissolved soap and extra salt. The trihydric chemical is then finally taken out of the mixture through distillation. It does not end here because further impurities are removed by passing the chemical into a charcoal filter or using bleaching techniques. The final product is a highly concentrated and colorless glycerin.

History has seen the making of the compound into explosive. However, it is never explosive in itself. It has to be changed into nitroglycerin first before it becomes explosive. Furthermore, nitroglycerin is not only used in explosives but is found as a medication for heart disease.

The compound has many uses. It is a preservative for fruits and food products. Lotions and creams contain this chemical as an emulsifying and moisturizing agent. In hydraulic jacks it serves as antifreeze. The antiseptic qualities of this chemical make it valuable in biological laboratories such as to preserve specimens in jars. Moisturizing soaps contain the compound. These soaps are usually clear and are easy to make.









0 comments

  • Money Management Tip - Paper Or Plastic? Think carefully about your spending patterns. When you are going into your purse or wallet to pay for a product or service do you pull out cash or a plastic card with a magnetic strip? If you are in debt, there is a very high likelihood that you…
  • 5 Ways to Use the Power of Affirmations to Change Your Life Affirmations are a powerful tool for creating the life you want. You can think of affirmations as codes and instructions for the mind. When those codes are created deeply within the subconscious mind they begin to work automatically within your…
  • Car Shopping Tip - Save On Fuel And Get $ 1000 From The Canadian Government Here is a car shopping tip you do not see everyday. In March 2007 the Canadian Government announced in their budget that a rebate would be available for fuel efficient vehicles, referred to as the ecoAuto Rebate Program. The idea is to reward…
  • 3 Steps to Financial Freedom: A Trend of the New Rich I'm going to refer to the cycle of revolving debt and moving into the wonderful world of financial freedom to preparing a sandwich. The two are markedly different. But, using this association should make these steps easier to remember. …
  • Guidelines to Create Your Computer Security Logo Well-known organization trademarks for a business tend to be simple to build. A good Computer security logo must include distinct pictures, which vibrantly demonstrate your own products as well as providers. The specific close off should show or…