Propylene glycol

Propylene glycol COA TDS price MSDS

Propylene glycol MSDS

Propylene glycol TDS

Propylene glycol price

Product no. chemwill-Propylene glycol-920936

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Propylene glycol CAS 57-55-6

Propane-1,2-diol; Propylene glycol CAS 57-55-6

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1,2-Propanediol (CAS NO.57-55-6 ), also known as Propylene glycol, is a colorless, odorless, viscous, highly hygroscopic liquid with a faintly sweet taste. It is miscible with water, ethanol, ether, chloroform, acetone and other organic solvents. The solubility to hydrocarbons and chlorinated hydrocarbons is small, but it is strong than ethylene glycol. Propylene Glycol contains an asymmetrical carbon atom, so it exists in two optically active forms (dextrorotatory and sinistrorotatory isomers). And the commercial Propylene Glycol is a racemic mixture.

Physical properties about Propylene Glycol are: (1)ACD/LogP: -1.341; (2)ACD/LogD (pH 5.5): -1.34; (3)ACD/LogD (pH 7.4): -1.34; (4)ACD/BCF (pH 5.5): 1.00; (5)ACD/BCF (pH 7.4): 1.00; (6)ACD/KOC (pH 5.5): 4.44; (7)ACD/KOC (pH 7.4): 4.44; (8)#H bond acceptors: 2; (9)#H bond donors: 2; (10)#Freely Rotating Bonds: 3; (11)Index of Refraction: 1.43; (12)Molar Refractivity: 18.976 cm³; (13)Molar Volume: 73.444 cm³; (14)Polarizability: 7.523 10-24cm³; (15)Surface Tension: 38.0040016174316 dyne/cm; (16)Density: 1.036 g/cm³; (17)Flash Point: 107.222 °C; (18)Enthalpy of Vaporization: 49.011 kJ/mol; (19)Boiling Point: 184.848 °C at 760 mmHg; (20)Vapour Pressure: 0.203999996185303 mmHg at 25°C

Preparation of Propylene Glycol: Propylene Glycol can be obtaine by epoxypropane. It includes direct hydration and indirect hydration. The direct hydration is the reaction of epoxypropane and water at 150-160 °C and 0.78-0 .98 MPa. After evaporation and distillation, Propylene Glycol is obtained. The indirect hydration is the reaction of epoxypropane and water in the presence of catalyst sulfuric acid. In addition, Propylene Glycol also can be produced by direct catalytic oxidation from propylene. The catalyst is anhydrous tertiary butanol.

Uses of Propylene Glycol: Propylene Glycol is an important raw material in unsaturated polyester, epoxy resins, polyurethane resins, plasticizers and surfactants. The amount occupies about 45% of total consumption. This unsaturated polyester is largely used for surface coatings and reinforced plastics. Because of good viscosity and moisture absorption, and non-toxic, Propylene Glycol is widely used as a hygroscopic agent, antifreeze, lubricants and solvents in the food, pharmaceutical and cosmetics industries. In the food industry, Propylene Glycol and fatty acid reacts to produce propylene glycol ester of fatty acid, which is mainly used as food emulsifier. It is also used as solvent for spices, seasonings and food coloring. What's more, 1,2-propanediol is used as a humidifying agent of tobacco, mildew preventive, fruit ripening preservatives, film-forming coatings additives, antifreeze and heat transfer media, etc. It is often used as a substitute for ethanol and glycerol. In pharmaceutical industry, Propylene Glycol is commonly used as solvent in the manufacture of various types of ointment, softener, excipients, preservatives, vitamins, penicillin, etc. As Propylene Glycol has good solubility with various spices, it is also used as solvent of cosmetic and softeners, etc.

Name:    Propylene glycol
Synonyms:    Propyledne glycol;Glycerol Impurity 3（Glycerol EP Impurity C）;Propyleneglycol Manufacturer;1,2-PROPANEDIOL, GR ACS 99.5%;PROPYLENEGLYCOLTECHGRADE;Propane-1,2-diol particulates;Propane-1,2-diol total (vapour and particulates);Propylene Glycol, Reagent
CAS:    57-55-6
MF:    C3H8O2
MW:    76.09
EINECS:    200-338-0
Propylene glycol, also called propane-1,2-diol, is an organic compound with the chemical formula C3H8O2. It is a viscous colorless liquid which is nearly odorless but possesses a faintly sweet taste. Chemically it is classed as a diol and is miscible with a broad range of solvents, including water, acetone, and chloroform.
It is produced on a large scale and is primarily used in the production of polymers but also sees use in food processing as the E-number E1520, and as a process fluid in low temperature heat exchange applications.
The compound is sometimes called α-propylene glycol to distinguish it from the isomer propane-1,3-diol (β-propylene glycol).
Appearance & Physical State     clear viscous liquid
Density     1.036 g/mL at 25ºC(lit.)
Boiling Point     187ºC
Melting Point     -60ºC
Flash Point     99ºC
Refractive Index     n20/D 1.432(lit.)
Stability     Stable under normal temperatures and pressures.
Storage Condition     Store at RT.
Safety Info
Safety Statements     S24/25
HS Code     2905320000
Propylene glycol Usage And Synthesis
Physical and Chemical Properties    Propylene glycol is scientifically named as “1,2-propanediol”, and has a chemical formula of CH3CHOHCH2OH and a molecular weight of 76.10.
Propylene glycol Preparation Products And Raw materials
Preparation Products    Methyl acrylate-->Pyruvic acid-->PAINT-->Phytic acid-->Adhesive-->4-Hydroxystyrene-->Unsaturated polyester resin-->1,3-Dibromopropane-->Curcumin-->2,4,5-Trichlorophenol-->1,3-Dichloropropane-->3-Chloro-1,2-propanediol-->Glycidol-->LACCAIC ACID-->Propylene carbonate -->alpha-d-Glucopyranoside, beta-d-fructofuranosyl, octadecanoate -->MONASCUS RED-->Famciclovir-->Meprobamate-->2-OXAZOLIDINONE, 5-(HYDROXYMETHYL)-3-(3-METHYLPHENYL)--->5,8-Dihydroxy-2-[(1R)-1-hydroxy-4-methyl-pent-3-enyl]naphthalene-1,4-dione-->Poly(propylene glycol)-->4-Hydroxy-2,5-dimethyl-3(2H)furanone-->PROPYLENE GLYCOL MONOSTEARATE (CONTAINS CA. 35% MONOPALMITATE)-->1,1'-Oxydi-2-propanol-->Diprophylline-->2,4-DIHYDROXY-3,3-DIMETHYLBUTANOIC ACID-->demulsifier PE series-->Maiz moraelo colour
Raw materials    Methanol-->Chlorine-->Propylene oxide-->1-Chloro-2-propanol-->Propylene carbonate
Product Categories:    -;INORGANIC & ORGANIC CHEMICALS;Medicine grade
Mol File:    57-55-6.mol
Propylene glycol Structure
Propylene glycol Chemical Properties
Melting point     -60 °C
Boiling point     187 °C(lit.)
density     1.036 g/mL at 25 °C(lit.)
vapor density     2.62 (vs air)
vapor pressure     0.08 mm Hg ( 20 °C)
refractive index     n20/D 1.432(lit.)
FEMA     2940 | PROPYLENE GLYCOL
Fp     225 °F
storage temp.     Store at RT.
form     Viscous Liquid
color     APHA: ≤10
Specific Gravity    1.038 (20/20℃)1.036～1.040
PH    6-8 (100g/l, H2O, 20℃)