1,3-Propanediol

1,3-Propanediol
Names
	Preferred IUPAC name Propane-1,3-diol
	Other names 1,3-Dihydroxypropane; Trimethylene glycol
Identifiers
CAS Number	504-63-2 ;
3D model (JSmol)	Interactive image;
Abbreviations	PDO
Beilstein Reference	969155
ChEBI	CHEBI:16109 ;
ChEMBL	ChEMBL379652 ;
ChemSpider	13839553 ;
DrugBank	DB02774 ;
ECHA InfoCard	100.007.271
EC Number	207-997-3;
KEGG	C02457 ;
MeSH	1,3-propanediol
PubChem CID	10442;
RTECS number	TY2010000;
UNII	5965N8W85T ;
CompTox Dashboard (EPA)	DTXSID30897465 DTXSID8041246, DTXSID30897465 ;
	InChI InChI=1S/C3H8O2/c4-2-1-3-5/h4-5H,1-3H2 Key: YPFDHNVEDLHUCE-UHFFFAOYSA-N ; Key: YPFDHNVEDLHUCE-UHFFFAOYAS;
	SMILES OCCCO;
Properties
Chemical formula	CH2(CH2OH)2
Molar mass	76.095 g·mol−1
Appearance	Colourless liquid
Density	1.0597 g cm−3
Melting point	−27 °C; −17 °F; 246 K
Boiling point	211 to 217 °C; 412 to 422 °F; 484 to 490 K
Solubility in water	Miscible
log P	−1.093
Vapor pressure	4.5 Pa
Refractive index (nD)	1.440
Thermochemistry
Std enthalpy of; formation (ΔfH⦵298)	−485.9–−475.7 kJ mol−1
Std enthalpy of; combustion (ΔcH⦵298)	−1848.1–−1837.9 kJ mol−1
Hazards
NFPA 704 (fire diamond)	2 2 0
Flash point	79.444 °C (174.999 °F; 352.594 K)
Autoignition; temperature	400 °C (752 °F; 673 K)
Safety data sheet (SDS)	sciencelab.com
Related compounds
Related glycols	Ethylene glycol, 1,2-propanediol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

1,3-Propanediol is the organic compound with the formula CH₂(CH₂OH)₂. This 3-carbon diol is a colorless viscous liquid that is miscible with water.