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57-55-6 1,2-Propanediol

product Name 1,2-Propanediol
CAS No 57-55-6;123120-98-9
Synonyms Propane-1,2-diol; Propylene Glycol; Glycol-Propylene; Dowfrost(Tm)
Molecular Formula C3H8O2
Molecular Weight 76.09
InChI InChI:1S/C3H8O2/c1-3(5)2-4/h3-5H,2H2,1H3
EINECS 200-338-0
Molecular Structure 57-55-6;123120-98-9 1,2-Propanediol
Melting point -60℃
Boiling point 195.1°C at 760 mmHg
Flash point 85.7°C
Water solubility miscible
Vapour Pressur 0.111mmHg at 25°C
Safety Description S24/25:;

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Description
Physical and chemical properties Color and smell state: colorless, odorless, viscous transparent liquid
Toxicity: non-toxic    Flammability: combustible
Density: 1.0381  Volatility: hard to volatile
Corrosivity: No corrosion Boiling point: 188¡æ 
Decomposability: high temperature decomposition Stability: good
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Description Molecular formula: C3H8O2 M.W:76 CAS No.:57-55-6 Specifications: Item Index Color, APHA Max. 10 Content% Min. 99.0 Moisture% Max. 0.2 Specific Gravity (20/20) 1.035-1.039 Free acid,(CH3OOH),ppm Max. 75 Residue, ppm Max. 80 Distillation range>95% 184-190 Index of refraction 1.433-1.435
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Specifications 99.5%
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Description Propylene glycol is an important raw material for unsaturated polyester, epoxy resin, and polyurethane resin, accounting for about 45% of its total consumption. This unsaturated polyester is widely used in surface coatings and reinforced plastics. Propylene glycol has good viscosity and hygroscopicity and is non-toxic, making it widely used as a humectant, antifreeze, lubricant, and solvent in the food, pharmaceutical, and cosmetic industries. In the food industry, propylene glycol reacts with fatty acids to form propylene glycol fatty acid esters, which are mainly used as food emulsifiers; propylene glycol is also an excellent solvent for flavors and pigments. In the pharmaceutical industry, propylene glycol is commonly used as a solvent, softening agent, and excipient in the manufacture of various ointments and pastes. Due to its good miscibility with various fragrances, it is also used as a solvent and softening agent in cosmetics. Propylene glycol is also used as a tobacco hume...
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