What is the difference between ethylene glycol, propylene ethylene glycol, vinyl ethylene glycol, and propylene glycol?
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Dear colleagues in the chemical industry, it’s been a long time since I’ve dealt with chemistry. I was quite good at it when I was in the 11th grade, but now I can’t remember anything anymore. What are the differences between these? Thank you all! :lol Last edited by QXZ-1966 on 2009-2-18 20:59 ]
Product name: Ethylene glycol
CA registration number: 107-21-1
English name: Ethylene glycol; Glycol
Alternative names: Glycerol; 1,2-Ethanediol; EG
Molecular formula: HOCH2CH2OH
Uses: Primarily used in the production of polyester resins, alkyd resins, plasticizers, and antifreezes; it is also used in cosmetics.
Properties: Colorless, transparent, viscous liquid with a sweet taste; it is hygroscopic. Melting point: 198°C; Boiling point: –11.5°C; Relative density: 1.1088; Refractive index: 1.4318; Flash point: 116°C. Solubility: It is soluble in water, lower aliphatic alcohols, glycerol, acetic acid, propanone and similar compounds, aldehydes, pyridine and similar coal tar bases; slightly soluble in ether; practically insoluble in benzene and its derivatives, chlorinated hydrocarbons, petroleum ether, and oils. Product name: 1,2-Propylene glycol
CA registration number: 57-55-6
English name: 1,2-Propylene glycol
Alternative name: Propylene glycol
Molecular formula: HOCH2CH2CH2OH
Uses: Used as a raw material for resins, plasticizers, surfactants, emulsifiers, and demulsifiers; it can also be used as an antifreeze and heat transfer medium.
Properties: A colorless, viscous, stable, water-absorbing liquid that is virtually tasteless and odorless. Melting point: -60°C; Boiling point: 187.3°C; Freezing point: Relative density: 1.0381; Refractive index: 1.4326; Flash point: 99°C; Solubility: Miscible with water, ethanol, and various organic solvents.
CA registration number: 107-21-1
English name: Ethylene glycol; Glycol
Alternative names: Glycerol; 1,2-Ethanediol; EG
Molecular formula: HOCH2CH2OH
Uses: Primarily used in the production of polyester resins, alkyd resins, plasticizers, and antifreezes; it is also used in cosmetics.
Properties: Colorless, transparent, viscous liquid with a sweet taste; it is hygroscopic. Melting point: 198°C; Boiling point: –11.5°C; Relative density: 1.1088; Refractive index: 1.4318; Flash point: 116°C. Solubility: It is soluble in water, lower aliphatic alcohols, glycerol, acetic acid, propanone and similar compounds, aldehydes, pyridine and similar coal tar bases; slightly soluble in ether; practically insoluble in benzene and its derivatives, chlorinated hydrocarbons, petroleum ether, and oils. Product name: 1,2-Propylene glycol
CA registration number: 57-55-6
English name: 1,2-Propylene glycol
Alternative name: Propylene glycol
Molecular formula: HOCH2CH2CH2OH
Uses: Used as a raw material for resins, plasticizers, surfactants, emulsifiers, and demulsifiers; it can also be used as an antifreeze and heat transfer medium.
Properties: A colorless, viscous, stable, water-absorbing liquid that is virtually tasteless and odorless. Melting point: -60°C; Boiling point: 187.3°C; Freezing point: Relative density: 1.0381; Refractive index: 1.4326; Flash point: 99°C; Solubility: Miscible with water, ethanol, and various organic solvents.
Ethylene glycol is a saturated diol... The carbon atoms in ethylene glycol are not unsaturated... Propylene glycol simply has one more carbon atom than ethylene glycol.
HO-CH-OH | Ethylene glycol: CH2=C-CH3. According to the chemical formula, the double bond gives it reducing properties; it is unstable and flammable. It is used in the production of antifreeze as an additive, and it is also a raw material in cigarette manufacturing. Ethylene glycol: OH OH OH | | | CH3-CH-OH or CH2-CH2; it is a product of petroleum processing and is flammable. Propylene glycol: CH3—CH—CH2 ∣ ∣ (4 isomeric forms); it is a colorless, viscous, stable liquid with water-absorbing properties; it has almost no taste or odor, is flammable, and has low toxicity. Mixes with water, ethanol, and various organic solvents. Propylene glycol can be used as a raw material for unsaturated polyester resins, as well as a raw material for plasticizers, surfactants, emulsifiers, and demulsifiers. The hydroxyl properties of the three substances, which can be used as antifungals, fruit ripeners, preservatives, antifreezing agents, and tobacco humectants, are essentially the same