99.5% Pure Glycerol with Competitive Price, Refined Glycerol, Glycerol Glycerine

• Customization: Available
• CAS No.: 56-81-5
• Formula: C3h8o3
• Model NO.: 56-81-5
• EINECS: 200-289-5
• Appearance: Liquid
• Usage: Oil Drilling Auxiliary Agent, Water Treatment Chemicals, Rubber Auxiliary Agents, Plastic Auxiliary Agents, Coating Auxiliary Agents, Textile Auxiliary Agents, Paper Chemicals, Surfactants, Leather Auxiliary Agents, Electronics Chemicals
• Color: Colorless
• Melting Point: 18.17°c
• Viscosity: 243 MPa·s
• Refractive Index: 1.4746
• Surface Tension: 63.4 Mn/M
• Transport Package: Barreled
• Specification: 220
• Trademark: CN
• Origin: Cn
• Production Capacity: 500000t

Product Description

Product Description

 

Here is the detailed introduction to Glycerol (propane-1,2,3-triol):

Basic Information

• Molecular Formula: \(C_3H_8O_3\)
• Alias: Glycerin, 1,2,3-Propanetriol.
• Appearance: Colorless, odorless, sweet-tasting viscous liquid.
• Density: 1.26 g/mL.
• Boiling Point: 290°C. It has strong hygroscopicity and is miscible with water and alcohol in any proportion.

Molecular Structure

• As a polyol, glycerol contains hydroxyl groups (\(-OH\)) as functional groups. The three carbon atoms in its carbon chain are each bonded to a hydroxyl group: the middle one is a secondary alcohol hydroxyl group, and the other two are primary alcohol hydroxyl groups. All atoms are connected by single bonds, and the molecule can form various stable conformations by rotating the O-H bond.

Chemical Properties

• Etherification Reaction: It can undergo cyclization with various alkylating agents to form aliphatic and aromatic glycerol ethers.
• Cyclization Reaction: Reacts with aldehydes or ketones to form cyclic acetals and ketals.
• Esterification Reaction:
  • Esterifies with saturated/unsaturated fatty acids to produce glycerides.
  • Reacts with inorganic acids to form mono-, di-, or triesters.
• Substitution Reaction: Hydroxyl groups are easily substituted by halogen atoms from halides (e.g., hydrogen halides) to form halides, with the hydroxyl groups at positions 1 and 3 being more reactive.
• Transesterification Reaction: Reacts with triglycerides to produce fatty acids and mono- or diglycerides.
• Dehydration Reaction: Dehydration occurs at 180°C. In the presence of sulfuric acid, intermolecular dehydration yields glycerol ethers, while intramolecular dehydration yields acrolein.
• Oxidation Reaction: It does not oxidize in air under normal conditions but is easily oxidized by other oxidants.
  • With weak oxidants, only one hydroxyl group is oxidized to form glyceraldehyde.
  • With strong oxidants, it is oxidized to 2-hydroxypropanoic acid.
• Reaction with Bases: The three hydroxyl groups influence each other, allowing slight dissociation of hydrogen atoms in the hydroxyl groups, giving glycerol weak acidity. It reacts with alkaline hydroxides to form alcoholates (e.g., bright blue copper glycerolate with freshly prepared copper hydroxide).

Application Fields

• Food Industry:
  • As the backbone of triglyceride molecules, it is harmless to humans and has high food safety.
  • Used as a sweetener and humectant to enhance food softness and shelf life.
  • Serves as a carrier solvent for flavors, pigments, and water-insoluble preservatives.
  • Used to produce fatty acid glycerides as emulsifiers and stabilizers.
• Daily Chemicals: Widely used in skin care products, forming a water film and protective layer on the skin to prevent water loss and absorb moisture from the air, keeping the skin moisturized and smooth.
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• Other Fields:
  • An important chemical raw material for manufacturing synthetic resins, plastics, paints, nitroglycerin, and oils.
  • Added to tobacco to prevent drying.
  • Used as an antifreeze for liquid fuels.

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