Dipropylene glycol
IUPAC name 4-Oxa-2,6-heptandiol and 4-Oxa-1,7-heptandiol
Other names 1,1'-Oxybis(1-propanol) and 1,1'-Oxybis(2-propanol)
Identifiers
CAS number	25265-71-8
EC number	246-770-3
Jmol-3D images	Image 1 Image 2
SMILES OCCCOCCCO CCC(O)OC(CC)O.CC(COCC(C)O)O
InChI InChI=1S/2C6H14O3/c1-5(7)3-9-4-6(2)8;1-3-5(7)9-6(8)4-2/h2*5-8H,3-4H2,1-2H3  Key: ZWHXRCBKXVJADE-UHFFFAOYSA-N  InChI=1/2C6H14O3/c1-5(7)3-9-4-6(2)8;1-3-5(7)9-6(8)4-2/h2*5-8H,3-4H2,1-2H3 Key: ZWHXRCBKXVJADE-UHFFFAOYAU
Properties
Molecular formula	C6H14O3
Molar mass	134.173 g/mol
Appearance	colorless liquid
Density	1.0206 g/cm3 at 20 °C
Boiling point	230.5 °C[1]
Solubility in water	miscible with water, soluble in ethanol
Hazards
MSDS	SIRI.org
NFPA 704	1 1 0
Flash point	121 °C
Autoignition temperature	310 °C
Related compounds
Related compounds	Ethylene glycol Propylene glycol
(verify) (what is: /?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Dipropylene glycol is a mixture of three isomeric chemical compounds, 4-oxa-2,6-heptandiol, 2-(2-Hydroxy-propoxy)-propan-1-ol, and 2-(2-Hydroxy-1-methyl-ethoxy)-propan-1-ol. It is a colorless, nearly odorless liquid with a high boiling point and low toxicity.^[2][3]

Uses

Dipropylene glycol finds many uses as a plasticizer, an intermediate in industrial chemical reactions, as a polymerization initiator or monomer, and as a solvent. Its low toxicity and solvent properties make it an ideal additive for perfumes and skin and hair care products. It is also a common ingredient in commercial fog fluid, used in entertainment industry smoke and haze machines.^[2][3][4]

References