Glycerin has an average molecular mass of 92.09. It boils at about 290°C while it melts at about 20°C. Glycerin has a specific gravity of 1.26 (20/20°C) and a vapor density of 3.17 (AIR=1). The nonelectrolyte solvent is soluble in water, ethanol, acetone, and DMSO while insoluble in ether and benzene. Glycerin has a surface tension of 64.8 g/s2 (20°C) and a refractive index of 1.4758 (20°C). This odorless alcohol is combustible, with a flash point of 199°C and an autoignition value of 370°C.
Tuesday, May 10, 2011
Tuesday, May 3, 2011
Vegetable Glycerin
Vegetable Glycerin is added to soap in order to produce extra moisturizing properties and to ensure a clear finish. It is easily dissolved into water and alcohol, but does not mix well in oils.
This product has hygroscopic properties. This means it will easily absorb water from the surrounding air. If your container of glycerin is left open, it will absorb water and it will stabilize at 20% water and 80% glycerin. The taste would blister because glycerin is dehydrating. When water is used to dilute it, however, it makes the skin soft.
Vegetable Glycerin is high in viscosity and is colorless and sweet tasting. It has a high boiling point and freezes as a paste. The most common uses are in soap and other beauty products like lotions. Although, it is common in many other applications.
This product has hygroscopic properties. This means it will easily absorb water from the surrounding air. If your container of glycerin is left open, it will absorb water and it will stabilize at 20% water and 80% glycerin. The taste would blister because glycerin is dehydrating. When water is used to dilute it, however, it makes the skin soft.
Vegetable Glycerin is high in viscosity and is colorless and sweet tasting. It has a high boiling point and freezes as a paste. The most common uses are in soap and other beauty products like lotions. Although, it is common in many other applications.
Monday, May 2, 2011
Vegetable Glycerin USP
Vegetable Glycerin USP is approved as a food additive for food and medical use applications.
Vegetable Glycerin is added to soap in order to produce extra moisturizing properties and to ensure a clear finish. It is easily dissolved into water and alcohol, but does not mix well in oils.
USP labeling implies that it conforms to all the legal requirements of the FDA and that it was produced in accordance with the principles outlined in FDA’s Good Manufacturing Practices.
Vegetable Glycerin is added to soap in order to produce extra moisturizing properties and to ensure a clear finish. It is easily dissolved into water and alcohol, but does not mix well in oils.
USP labeling implies that it conforms to all the legal requirements of the FDA and that it was produced in accordance with the principles outlined in FDA’s Good Manufacturing Practices.
Other nations have compiled an official national pharmacopeia, similar in scope and is labeled as USP. Currently, there is a collaborative international program to harmonize the Glycerin monographs in the USP and in the European Pharmacopeia.
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