JECFA

Text-only version



	Transparent process

	The guidelines

	The experts

	Output

	The archive

	Helpdesk

	History

	What's new

	JECFA at WHO

Online Edition: "Specifications for Flavourings"

Español

Online help About the data Analytical Methods (Volume 4)

print-friendly version

Flavouring	Isovaleraldehyde propyleneglycol acetal
Synonym(s)	4-Methyl-2-(2-methylpropyl)-1,3-dioxolane
Latest JECFA evaluation	2007 (Session 68)
Status of specification	Full
Chemical name	2-Isobutyl-4-methyl-1,3-dioxolane
JECFA number	1732
CAS number	18433-93-7
FEMA number	4286
COE number	-
FLAVIS number	-
Molecular weight	144.21
Chemical formula	C₈H₁₆O₂
Physical form/odour	Clear, colourless liquid; Fruity, slightly fatty aroma
Solubility	Insoluble in water; soluble in organic solvents
Solubility in ethanol	Soluble
Boiling point (°C)	164-165°
Assay min %	95%
Acid value max	1
Refractive index	1.412-1.420
Specific gravity	0.895-0.902
Other requirements	-
ID Test	HNMR IR MS
Spectrum	http://www.fao.org/ag/agn/jecfa-flav/img/jecfa68/1732-hnmr.gif http://www.fao.org/ag/agn/jecfa-flav/img/jecfa68/1732-ir.gif http://www.fao.org/ag/agn/jecfa-flav/img/jecfa68/1732-ms.gif

FAO Home		Agriculture & Consumer Protection Department		Nutrition & Consumer Protection Division		Contact AGNS

© FAO, 2009