Glycerin is a colorless sweet clear viscous liquid. No smell. Warm and sweet. The national standard is called glycerol, can absorbmoisture from the air, also can absorb hydrogen sulfide, sulfur dioxide and hydrogen cyanide. Soluble in benzene, chloroform, carbon tetrachloride, carbon disulfide, petroleum ether and oil. Relative density 1.26362. Melting point 17.8. Boiling point 290 C(decomposition). The refractive index of 1.4746. Flash point (open cup) 176 C. Acute toxicity: mg/kg LD50:31500 (rat)

Item	Index
	Top grade	First grade	Second grade
Appearance	transparent without suspended substance	transparent without suspended substance	transparent without suspended substance
Odor	no unpleasant odor	no unpleasant odor	no unpleasant odor
Chroma, Hazen ≤	20	30	30
Assay, % ≥	99.5	98.0	95.0
Density (20ºC), g/ml ≥	1.2598	1.2559	1.2481
Chloride (as Cl), % ≤	0.001	0.01	-
Sulfatizing ash, % ≤	0.01	0.01	0.05
Acidity or Alkalinity, mmol/100g ≤	0.050	0.10	0.30
Saponification equivalent, mmol/100g ≤	0.40	1.0	3.0
Arsenic (as As), mg/kg ≤	2	2	-
Heavy metals (as Pb), mg/kg ≤	5	5	-
Reductive matter	no precipitation or silver mirror	no precipitation or silver mirror	-

• used in the manufacture of nitroglycerine, alkyd resin and epoxy resin.
• used for making various preparations, solvent, hygroscopic agent, antifreeze and sweeteners.
• in the paint industry to produce a variety of alkyd resin, polyester resin, epoxy resin and epoxy resin and so on.
• textile and dyeing industry to produce lubricant, hygroscopic agent, anti shrinkage fabric treatment agent, dispersing agent and penetrating agent.
• in the food industry as a sweet agent, tobacco agents and solvents.
• in the paper, cosmetics, leather, photography, printing, metal processing, electrical materials, rubber and other industries have a wide range of uses.
• and used as fuel for automobiles and aircraft, as well as antifreeze in oil fields.