Glycerol,the same as glycerin,is a kind of colorless,odorless and sweet viscous liquid.The chemical structure of glycerin is totally different from carbohydrate,therefore,they don’t belong to the same substances.
Every gram glycerin produces 4 kcal heat after complete oxidation,and it won’t change the blood sugar and insulin level after absorbed by human body.Glycerin is usually applied as sweetener and humectant in food processing industry,and appears often in sport food and milk substitutes.
In winter,people usually use glycerin to wipe hands,faces and surface of the skin exposed in the air,keeping the skin soft,flexible,and keeping damage from dust,weather etc. to become dry,preventing skin from frostbite.As glycerin can increase the moisture content of human tissue,it is able to increase the body’s ability to exercise in hot environment.
molecular formula: C3H8O3
molecular weight: 92.90
appearance and traits: colorless and viscous liquid, odorless,warm sweet,can absorb moisture.
melting point(℃): 18.18
boiling point(℃): 290.9
flash point(℃): 177
ignition temperature(℃): 370
relative density(water=1): 1.26331(20℃)
relative steam density(air=1): 3.1
viscosity(20℃): 1412mPa. (25℃): 945mpa.s
volume expansion coefficient/K-1=0.000615
surface tension(20℃): 63.3mN/m
saturated vapor pressure(kPa): 0.4(20℃)
It is miscible in ethanol,miscible with water,insoluble in chloroform,ether,carbon disulfide,benzene,oil,soluble certain inorganic substances.
Explosion hazard: it is combustible,irritating.
Dangerous characteristics: in case of fire,it has high heat and is flammable.
Main application：
1.For gas chromatography stationary liquids and organic synthesis,also can be used as solvent,gas meter,hydraulic press shock absorber,softener,antifreeze,nutrient and desiccant etc. for antibiotic fermentation.
2.Producing nitroglycerin,acetate,polyurethane resin,epoxy resin.used often in the cosmetics industry,food industry,water-based printing ink,coatings industry.
As it is non-toxic,tasteless and pollution-free,it is the best substitute of diethylene glycol/ethylene glycol for the for the cosmetics/food industry.
Health hazard: not toxic for body after eating,no irritation to eyes and skin.Oral toxicity in mice LD50=31,500mg/kg. Intravenous administration LD50=7,560mg/kg.
Glycerin is the backbone component of triglyceride molecules.When the body consumes edible fat,the triglyceride therein is metabolized by metabolism in the body to form glycerin and stored in the fat cells.
Glycerin can be applied as cosmetics.
The chemical name of glycerin is glycerol.It is sweet colorless,viscous liquid,and it is a chemical product,has good water absorption,usually applied as additive ingredients for cosmetics.
So how can we select qualified glycerin?Generally,it’s best to select glycerin with high purity for skin care.It is pure and has good moisturizing effect when using mixed with water.The skin is moisturizing and soft and comfortable when touching.For example,White Beauty Pure Glycerin,it is purely extracted from plants,of which the purity is above 99%.And it is not added any chemical ingredients and preservatives etc.,not harming to skin.But due to the high purity,it needs test using to prevent allergies.In addition,if the skin has cracked and bleeding,it is impossible to use pure glycerin.Because glycerin is used for moisturizing,it will easily cause infection in the affected area.After all,glycerin is a makeup,not a medicine.
What’s need to be pointed out is that,as the function of maintaining water,glycerin will increase blood volume and cause dizziness,nausea and other symptoms.These symptoms will be more pronounced in cases where blood volume or blood pressure is high in pregnancy,high blood pressure,diabetes and kidney disease.So please avoid taking glycerin when you have the above disease or are in a special physiological period such as pregnancy.It is recommended to get a full assessment of health condition before attempting any new supplement or medicines to avoid future problems.
