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1,3-Propanediol

1,3-Propanediol

Basic Information

CAS No.: 504-63-2
Molecular Formula: C3H8O2
Molecular Weight: 76.09

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Product Details

ChEBI: Propane-1,3-diol is the simplest member of the class of propane-1,3-diols, consisting of propane in which one hydrogen from each methyl group is substituted by a hydroxy group. A colourless, viscous, water-miscible liquid with a high (210℃) boiling point, it is used in the synthesis of certain polymers and as a solvent and antifreeze. It has a role as a protic solvent and a metabolite.


Chemical Properties

PropertyValue
Melting point

-27 °C (lit.)

Boiling point

214 °C/760 mmHg (lit.)

density

1.053 g/mL at 25 °C (lit.)

vapor pressure

0.8 mm Hg ( 20 °C)

refractive index

n20/D1.440(lit.)

FEMA

4753 | 1,3-PROPANEDIOL

Fp

>230 °F

storage temp.

Store below +30°C.

solubility

H2O: soluble

pka

14.46±0.10(Predicted)

form

Oily Liquid

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

Dielectric constant

35.0(20℃)

InChIKey

YPFDHNVEDLHUCE-UHFFFAOYSA-N

LogP

-0.71 at 20℃

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 Information

PropertyValue
Hazard symbolsXi
Hazard class codes38
Safety descriptions23-24/25
WGK Germany1
RTECS numberTY2010000
Autoignition temperature405 °C
TSCATSCA listed
HS code29053980
Storage class10 - Combustible liquids
Hazardous substances data504-63-2 (Hazardous Substances Data)
ToxicityLD50 orally in Rabbit: 15670 mg/kg
LD50 dermal Rabbit: >20000 mg/kg


Product Usage

As a diol, 1,3-propanediol is subject to many of the same polymeric applications as other low molecular mass diols (e.g., ethylene glycol, propylene glycol, and 1,4-butanediol). However, its relatively high price limits its use to applications requiring very specific performance characteristics. It is a raw-material source for 1,3-dioxanes. 1,3-Propanediol-bis(4-aminobenzoate) can be used as a chain extender in polyurethane elastomers. This bisbenzoate, which can also be synthesized from 1,3-dichloro-propane, finds other applications as a cross-linking agent in epoxy formulations and as a rubber additive.

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