FEMA 2129 Chemical Properties

Boiling point:

152-154 °C(Press: 12 Torr)

Density 

1.2115 g/cm3(Temp: 25 °C)

FEMA 

2129 | BENZALDEHYDE GLYCERYL ACETAL

color 

A colourless viscous liquid.

Odor

at 100.00 %. cherry bitter almond sweet

Odor Type

fruity

JECFA Number

838

LogP

1.98

EPA Substance Registry System

Benzaldehyde, cyclic acetal with 1,2,3-propanetriol (1319-88-6)

Safety Information

Toxicity

The acute oral LD₅₀ value in rats was reported as 3?5 ml/kg (2.42-4.09 ml/kg) and the acute dermal LD₅₀ value in rabbits as 5 ml/kg

FEMA 2129 Usage And Synthesis

Occurrence

Has apparently not been reported to occur in nature

Preparation

The α, α?- and α, β-isomers are obtained in mixture by heating glycerol and benzaldehyde to 145 to 170°C under a stream of CO2; the isomers are subsequently isolated, exploiting the solubility differences; the α, α?-isomer is readily converted to the α, β-form by heating in the presence of HCl.

FEMA 2129(1319-88-6)Related Product Information

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• FEMA 2129
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• 2-PHENYL-4-[(PROP-2-YNYLOXY)METHYL]-1,3-DIOXOLANE