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504-63-2

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Identification

Name
1,3-Propanediol
CAS
504-63-2
Synonyms
1,3-DIHYDROXYPROPANE
1,3-PROPANDIOL
1,3-PROPANEDIOL
1,3-PROPYLENE GLYCOL
AKOS 90317
AKOS BBS-00004418
PDO
PROPANE-1,3-DIOL
TRIMETHYLENE GLYCOL
1,3-Propylenediol
2-(Hydroxymethyl)ethanol
2-Deoxyglycerol
beta-Propylene glycol
beta-propyleneglycol
I,3-Propandiol
NSC 65426
nsc65426
omega-Propanediol
propane diol-1,3
Propanediol-(1,3)-(1,3-propylene glycol)
EINECS(EC#)
207-997-3
Molecular Formula
C3H8O2
MDL Number
MFCD00002949
Molecular Weight
76.09
MOL File
504-63-2.mol

Chemical Properties

Appearance
CLEAR OILY LIQUID
Appearance
Colorless oil liquid; odorless. Soluble in water, alcohol, and ether. Combustible.
Melting point 
-27 °C (lit.)
mp 
-32 °C
Boiling point 
214 °C/760 mmHg (lit.)
bp 
214 °C760 mm Hg(lit.)

density 
1.053 g/mL at 25 °C(lit.)

vapor pressure 
0.8 mm Hg ( 20 °C)

refractive index 
n20/D 1.440(lit.)

FEMA 
4753 | 1,3-PROPANEDIOL
Fp 
>230 °F

storage temp. 
Store below +30°C.
solubility 
H2O: soluble

form 
Oily Liquid
pka
14.46±0.10(Predicted)
color 
Clear
PH
4.5-7.0 (100g/l, H2O, 20℃)
explosive limit
2.5%(V)
Water Solubility 
100 g/L
Merck 
14,9714
BRN 
969155
InChIKey
YPFDHNVEDLHUCE-UHFFFAOYSA-N
CAS DataBase Reference
504-63-2(CAS DataBase Reference)
NIST Chemistry Reference
1,3-Propanediol(504-63-2)
EPA Substance Registry System
1,3-Propanediol (504-63-2)

Safety Data

Hazard Codes 
Xi
Risk Statements 
38
Safety Statements 
S23:Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer) .
S24/25:Avoid contact with skin and eyes .
WGK Germany 
1

RTECS 
TY2010000

Autoignition Temperature
405 °C
TSCA 
Yes
HS Code 
29053980
Hazardous Substances Data
504-63-2(Hazardous Substances Data)
Toxicity
LD50 orally in Rabbit: 15670 mg/kg LD50 dermal Rabbit > 20000 mg/kg

Raw materials And Preparation Products

Material Safety Data Sheet(MSDS)

Hazard Information

Chemical Properties
1,3-Propanediol, an isomer of propylene glycol, is a viscous, colorless, odorless, hygroscopic liquid that has a brackish irritating taste .
Chemical Properties
Colorless oil liquid; odorless. Soluble in water, alcohol, and ether. Combustible.
Uses
1,3-Propanediol is prepared as a by-product in the manufacture of glycerin by the saponification of fat . It is used to lower the freezing point of water and as a chemical intermediate. Industrial exposure is limited.
Uses
Solvent for thin film preparations.1 Vinyl epoxide synthon2 and reagent for epoxide ring-opening3 and polymerization reactions.4 Reagent for natural product syntheses.5
Purification Methods
Dry this diol with K2CO3 and distil it under reduced pressure. More extensive purification involves conversion with benzaldehyde to 2-phenyl-1,3-dioxane (m 47-48o) which is subsequently decomposed by shaking with 0.5M HCl (3mL/g) for 15minutes and standing overnight at room temperature. After neutralisation with K2CO3, the benzaldehyde is removed by steam distillation and the diol is recovered from the remaining aqueous solution by continuous extraction with CHCl3 for 1day. The extract is dried with K2CO3, the CHCl3 is evaporated and the diol is distilled. [Foster et al. Tetrahedron 6 177 1961, Beilstein 1 IV 2493.]

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