CAS 57-55-6 Propylene Glycol - Materials / Alfa Chemistry

NAVIGATION

Propylene Glycol

PRICE INQUIRY

Catalog Number

ACM57556

CAS Number

57-55-6

Product Name

Propylene Glycol

Structure

Category

Monomers

Synonyms

Propyleneglycol manufacturer

Description

Modified alcohol (1,2-propanediol), metabolized to lactic acid in the body.

IUPAC Name

Propane-1,2-diol

Molecular Weight

76.09

Molecular Formula

C3H8O2

Canonical SMILES

CC(CO)O

InChI

InChI=1S/C3H8O2/c1-3(5)2-4/h3-5H,2H2,1H3

InChI Key

DNIAPMSPPWPWGF-UHFFFAOYSA-N

Boiling Point

187 °C(lit.)

Melting Point

-60 °C(lit.)

Flash Point

225 °F

Purity

99+%

Density

1.036 g/mL at 25 °C(lit.)

Solubility

Soluble in water, ethanol, acetone

Appearance

Liquid

Application

All kinds of skin care products, hair care products, color cosmetics, soaps (glycerin soap).

Storage

5-30 °C

Color/Form

Colorless viscous liquid

Complexity

20.9

Composition

Propylene glycol

Covalently-Bonded Unit Count

Defined Atom Stereocenter Count

EC Number

200-338-0;200-338-0;613-293-0

Exact Mass

76.052429494

Features And Benefits

Effective humectant and wetting agent preventing water loss in products and in the skinIncreases skin permeability of active ingredients as it penetrates into the outermost skin layersEmollient and lubricant propertiesExcellent solubilizer of other ingredientsIncreases spreading of creams

Formal Charge

Heat of Vaporization

168.6 cal/g at BP

Heavy Atom Count

Hydrogen Bond Acceptor Count

Hydrogen Bond Donor Count

ICSC Number

0321

Log P

-0.92 (LogP);-0.92;log Kow = -0.92;-0.92;-0.92

MeSH Entry Terms

1,2 Propanediol;1,2-Propanediol;Glycol, Propylene;Monohydrate, Propylene Glycol;Propan-1,2-Diol;Propylene Glycol;Propylene Glycol Monohydrate;Propylene Glycol Sodium Salt;Propylene Glycol, (+-)-Isomer;Propylene Glycol, (R)-Isomer;Propylene Glycol, (S)-Isomer

Monoisotopic Mass

76.052429494

NSC Number

69860;35749;35748;35747

Odor

Practically odorless

Other Experimental

Specific heat: 0.590 cal/g at 20 °C; hygroscopic;Heat of vaporization = 15.4 kcal/mol at 25 °C; heat of formation = -116.1 kcal/mol at 25 °C (liquid); heat capacity = 45.1 kcal/mol at 20 °C; viscosity = 56.0 cP at 20 °C; surface tension = 36.51 dyne/cm at 25 °C;BP: 88-90 °C at 12 mm Hg; 187-189 °C at 760 mm Hg. Specific optical rotation: -15 deg at 20 °C /l-form/;BP: 95-96 °C at 14 mm Hg; Specific optical rotation: +15 (neat) deg at 20 °C; Density: 1.04 at 25 °C/4/ degC /d-form/;Henry's Law constant = 1.3X10-8 atm-cu m/mol at 25 °C (est);Hydroxyl radical reaction rate constant = 1.2X10-11 cu cm/molec-sec at 25 °C

Refractive Index

n20/D 1.432(lit.)

Rotatable Bond Count

RTECS Number

TY2000000

Stability

At cool temperatures, propylene glycol is stable in a well-closed container, but at high temperatures, in the open, it tends to oxidize, giving rise to products such as propionaldehyde, lactic acid, pyruvic acid, and acetic acid. Propylene glycol is chemically stable when mixed with ethanol (95%), glycerin, or water; aqueous solutions may be sterilized by autoclaving.

Storage Conditions

5-30 °C

Topological Polar Surface Area

40.5 Å²

Vapor Density

2.62 (NTP, 1992) (Relative to Air);Relative vapor density (air = 1): 2.6;2.62

Vapor Pressure

0.08 mm Hg at 68 °F ; 0.13 mm Hg at 77° F (NTP, 1992);0.13 mmHg;0.13 mm Hg at 25 °C /Extrapolated/;Vapor pressure, Pa at 20 °C: 10.6;0.08 mmHg

Viscosity

0.581 cP at 20 °C

XLogP3

-0.9