Dipropylene glycol

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Dipropylene glycol
Dipropylene glycol.svg
IUPAC names
4-Oxa-2,6-heptandiol and
Other names
1,1'-Oxybis(1-propanol) and
3D model (JSmol)
ECHA InfoCard 100.042.504 Edit this at Wikidata
EC Number
  • 219-251-4
Molar mass 134.173 g/mol
Appearance colorless liquid
Density 1.0206 g/cm3 at 20 °C
Boiling point 230.5 °C (446.9 °F; 503.6 K)[1]
miscible with water, soluble in ethanol
Safety data sheet SIRI.org
NFPA 704 (fire diamond)
Flammability code 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g. canola oilHealth code 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineReactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no codeNFPA 704 four-colored diamond
Flash point 121 °C (250 °F; 394 K)
310 °C (590 °F; 583 K)
Related compounds
Related compounds
Ethylene glycol
Propylene glycol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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]


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 fog machines.[2][3][4]


  1. ^ Lide, David R. (1998). Handbook of Chemistry and Physics (87 ed.). Boca Raton, Florida: CRC Press. p. 342. ISBN 0-8493-0594-2.
  2. ^ a b "Dipropylene Glycol Regular Grade (DPG)". Dow Chemical. Archived from the original on 2009-03-15. Retrieved 2009-04-07.
  3. ^ a b Lloyd R. Whittington, ed. (1993). Whittington's Dictionary of Plastics (3 ed.). Technomic Publishing. p. 138. ISBN 1-56676-090-9. Retrieved 2009-04-07.
  4. ^ "Dipropylene Glycol LO+ (DPG LO+)". Dow Chemical. Archived from the original on 2009-06-19. Retrieved 2009-04-07.