10108-80-2

Basic information

• Product Name: propane-1,2-diyl dipropionate
• Synonyms: propane-1,2-diyl dipropionate;1,2-Propanediol, dipropanoate;1,2-Propylene glycol dipropionate;Dipropionic acid 1,2-propanediyl ester;PROPYLENEGLYCOL DIPROPIONATE
• CAS NO: 10108-80-2
• Molecular Formula: C₉H₁₆O₄
• Molecular Weight: 188.22094
• EINECS: 233-298-8
• Mol File: 10108-80-2.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 230.2°Cat760mmHg
• Flash Point: 104°C
• Appearance: /
• Density: 1.02g/cm³
• Vapor Pressure: 0.0666mmHg at 25°C
• Refractive Index: 1.425
• CAS DataBase Reference: propane-1,2-diyl dipropionate(CAS DataBase Reference)
• NIST Chemistry Reference: propane-1,2-diyl dipropionate(10108-80-2)
• EPA Substance Registry System: propane-1,2-diyl dipropionate(10108-80-2)

Safety Data

• Hazardous Substances Data: 10108-80-2(Hazardous Substances Data)

Usage

General Description

Propane-1,2-diyl dipropionate is a chemical compound that is commonly referred to as di-n-propyl malonate. It is a clear, colorless liquid with a fruity odor, and it is considered to be a relatively stable ester. This chemical is primarily used as a fragrance ingredient in various consumer products such as perfumes, soaps, and lotions. It is also used as a flavoring agent in food products. Propane-1,2-diyl dipropionate is not known to be harmful to human health when used as directed, and it is considered to be a safe and effective ingredient in the formulation of scented and flavored products.

InChI:InChI=1/C9H16O4/c1-4-8(10)12-6-7(3)13-9(11)5-2/h7H,4-6H2,1-3H3

Upstream product

• 57-55-6 propylene glycol 
• 802294-64-0 propionic acid 
• 79-03-8 propionyl chloride 
• 54541-19-4 2-hydroxypropyl propionate 

Relevant articles and documents

An NMR study of chain transfer to diols containing both primary and secondary hydroxy groups in the polymerization of ε-caprolactone

ε-Caprolactone has been polymerized in the presence of various diols, viz. propane-1,2-diol (PD), butane-1,3-diol (BD) and hexane-1,5-diol (HD). 1H and 13C NMR spectroscopy were used to evaluate the structures. The final products were found to be a function of the diol used. It was shown that reactions incorporating PD gave low conversions and/or low degrees of polymerizations when compared with those involving BD or HD. In polymerizations involving BD two 13C resonances could be seen in the carbonyl region, assignable to the ester carbonyls adjacent to the oxymethine and oxymethylene groups derived from the residues of the diol units. Thus, both primary and secondary hydroxy groups were shown to be active in the transfer reaction. Selective decoupling was used to assign the down-field resonance to the carbonyl adjacent to oxymethylene and the up-field resonance to the carbonyl adjacent to oxymethine. However, in the case of the polymerization incorporating BD, approximately 10% of end groups were shown to be secondary alcohols, which are derived from the secondary hydroxy group of BD that does not transfer. In polymerizations involving HD only one carbonyl resonance, which could be assigned to an ester adjacent to the diol residue, was observed. From COSY spectra it was possible to assign a peak due to the ester of the secondary hydroxy. The fraction of secondary chain ends was thus observed to be greater, at ca. 13%, than in the BD polymerizations.

Physical Properties of Fatty Acid Esters of 1,2-Propane Diol. Part-I: 1-Monoesters and Monoacid Diesters

Pure monoacid diesters and 1-monoesters of 1,2-propane diol of odd chain fatty acids as well as of two higher even chain fatty acids were prepared and their physical properties determined.The odd and even chain fatty acid esters behave as two separate series, with respect to their melting behaviour: when considered as one series, alternation in the m.p. is evident.The changes in density and refractive index due to graded increases in molecular weight of the diesters, differ slightly for short and long chain fatty acid esters; dipropionate has the lowest viscosity amongst the diesters.