Propyl propionate Property

Melting point:

−76 °C(lit.)

Boiling point:

122-124 °C(lit.)

Density 

0.881 g/mL at 25 °C(lit.)

vapor density 

4 (vs air)

vapor pressure 

18.53hPa at 25℃

refractive index 

n20/D 1.393(lit.)

FEMA 

2958 | PROPYL PROPIONATE

Flash point:

76 °F

storage temp. 

Flammables area

solubility 

5g/l

form 

Liquid

color 

Clear colorless

Specific Gravity

0.882 (20/4℃)

Odor

Winey-fruity, Melon-like odor with a mildly fermented note

Odor Threshold

0.058ppm

Odor Type

chemical

explosive limit

1.3%(V)

Water Solubility 

Soluble in water. (5g/L).

JECFA Number

142

Merck 

14,7867

BRN 

1699993

Dielectric constant

4.7（20℃）

LogP

1.85 at 25℃

CAS DataBase Reference

106-36-5(CAS DataBase Reference)

NIST Chemistry Reference

Propanoic acid, propyl ester(106-36-5)

EPA Substance Registry System

Propanoic acid, propyl ester (106-36-5)

Safety

Hazard Codes 

Xn

Risk Statements 

10-20-2017/10/20

Safety Statements 

24

RIDADR 

UN 3272 3/PG 2

WGK Germany 

1

RTECS 

UF7100000

TSCA 

Yes

HazardClass 

3

PackingGroup 

II

HS Code 

29155090

Toxicity

mammal (species unspecified),LC50,inhalation,16900mg/m3 (16900mg/m3),Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 51(5), Pg. 61, 1986.

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H225Highly Flammable liquid and vapour

H332Harmful if inhaled

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P233Keep container tightly closed.

P240Ground/bond container and receiving equipment.

P241Use explosion-proof electrical/ventilating/lighting/…/equipment.

P242Use only non-sparking tools.

Propyl propionate Chemical Properties,Usage,Production

Chemical Properties

Clear colorless liquid

Chemical Properties

Propyl propionate has a complex, fruity odor reminiscent of apple, banana and pineapple. It has a somewhat pleasant, bitter flavor.

Occurrence

Reported found among the volatile constituents of grape var. white sauvignon. Also reported found in fresh apple, apple juice, apricot, melon, papaya, pear, Gruyere de Comte cheese, rum, cider, popcorn, durian, olive, malt whiskey and coffee.

Uses

Propyl propionate is a general reagent which can be used in various transesterification reactions. It is used as Solvent for nitrocellulose, paints, varnishes, lacquers, coating agents.

Definition

ChEBI: Propyl propionate is a propanoate ester resulting from the formal condensation of the hydroxy group of propanol with the carboxy group of propanoic acid. It has a role as a human metabolite, a rat metabolite, a biomarker and a fungal metabolite. It is functionally related to a propan-1-ol.

Application

n-propyl propionate is a fast evaporating solvent. Its linear structure contributes to effective viscosity reduction and improves solvent diffusion from coating films. It has application in automotive refinish, OEM coatings, appliance coatings, printing inks and as polymerization solvent.Its good activity yields efficient resin viscosity reduction that enables the development of lower VOC coatings. Its high electrical resistivity is beneficial in optimizing transfer efficiency in coatings applied via electrostatic spray equipment.

Preparation

Propyl propionate was synthesized by esterification of propyl alcohol with the corresponding acid in the presence of concentrated H2SO4, or in the presence of BF3.

Aroma threshold values

Detection: 57 ppb

Taste threshold values

Taste characteristics at 20 ppm: sweet, lift, tropical green, fruity notes.

General Description

Propyl propionate and water mixtures can be separated by pervaporation using PEBA membranes. The diffusivity of pure propyl propionate in the PEBA membrane is about 28 times higher than pure water diffusivity.

Flammability and Explosibility

Flammable

Purification Methods

Treat the ester with anhydrous CuSO4, then distil it under nitrogen. [Beilstein 2 IV 707.]