produktbeskrivelse

hydroxycitronellal Basic information

Product Name:	hydroksykitronellal
CAS:	107-75-5
MF:	C10H20O2
MW:	172.26
EINECS:	203-518-7
Mol-fil:	107-75-5.mol

hydroxycitronellal Chemical Properties

Smeltepunkt	22-23 °C
Boiling point	257 ° C (opplyst)
density	0,923 g / ml ved 25 ° C (opplyst)
FEMA	2583 \| HYDROXYCITRONELLAL
refractive index	n20/D 1.448(lit.)
Fp	> 230 ° F
lagringstemperatur	romtemperatur
pka	15,31 ± 0,29 (Forutsagt)
skjema	Liquid
Spesifikk tyngdekraft	0.93
farge	Klar fargeløs
JECFA Number	611
InChIKey	WPFVBOQKRVRMJB-UHFFFAOYSA-N
CAS DataBase Reference	107-75-5 (CAS DataBase Reference)
NIST Chemistry Reference	Hydroxycitronellal(107-75-5)
EPA Substance Registry System	Octanal, 7-hydroksy-3,7-dimetyl- (107-75-5)

Hydroxycitronellal Safety Information

Hazard Codes	Xi
Risk Statements	38-41-43
Sikkerhetserklæringer	26-39-36 / 37
RIDADR	UN1230 - class 3 - PG 2 - Methanol, solution
WGK Tyskland	1
RTECS	RG7850000
HS Code	29124990

hydroxycitronellal Usage And Synthesis

Description	Hydroxycitronellal has an intense, sweet, floral, lily-type odor. It may be prepared by hydration of natural citronellal obtained from Java citronella or from Eucalyptus citriodora; P-pinene is converted to myrcene, which on hydration may yield either linalool or a mixture of geranoil and nerol; the latter mixture can be hydrogenated to citronellol and subsequently converted to citronellal and hydroxycitronellal; also by hydrogenation of 3,7-dimethyl- 7-hydroxy-2-octen-2-al over palladium carbon in ethyl acetate solution.
Kjemiske egenskaper	Hydroxycitronellal has a sweet, floral, lily-type odor
Kjemiske egenskaper	clear colourless liquid
Kjemiske egenskaper	This is a colorless, slightly viscous liquid with a floral odor reminiscent of linden blossom and lily of the valley. Commercially available “hydroxycitronellal” is either optically active or racemic, depending on the starting material used. Hydroxydihydrocitronellal prepared from (+)-citronellal, for example, has a specific relation α20 D +9 to +10°. Hydroxydihydrocitronellal is relatively unstable toward acid and alkali and is, therefore, sometimes converted into more alkali-resistant acetals, particularly its dimethyl acetal. Because of its fine, floral odor, hydroxydihydrocitronellal is used in large quantities in many perfume compositions for creating linden blossom and lily of the valley notes. It is also used in other blossom fragrances such as honeysuckle, lily, and cyclamen.
Definition	ChEBI: The tertiary alcohol arising from addition of water across the C2C double bond of citronellal.
Taste threshold values	Taste characteristics at 50 ppm: sweet, waxy, green, floral and melon notes.
Trade name	Laurinal & reg; (Takasago).
Contact allergens	Hydroxycitronellal is a classical fragrance allergen, found in many products. It is contained in “fragrance mix.” It has to be listed by name in the cosmetics of the EU.
Safety Profile	A skin irritant. Combustible liquid. When heated to decomposition it emits acrid smoke and irritating fumes. See also ALDEHYDES.
Chemical Synthesis	By hydration of natural citronellal obtained from Java citronella or from Eucalyptus citriodora; β-pinene is converted to myrcene, which on hydration may yield either linalool or mixture of geranoil and nerol; the latter mixture can be hydrogenated to citronellol and subsequently converted to citronellal and hydroxycitronellal; also by hydrogenation of 3,7-dimethyl-7-hydroxy-2- octen-2-al over palladium carbon in ethyl acetate solution.

hydroxycitronellal Preparation Products And Raw materials

Raw materials	Sodium bisulfite-->Sodium acetate trihydrate-->SULFATE STANDARD-->Citral-->SULFUROUS ACID-->Citronellal-->Eucalyptus Citriodara Oil-->Citronella oil-->sulfurous acid
Preparation Products	8,8-Dimethoxy-2,6-dimethyloctan-2-ol-->HYDROXY CITRONELLAL DIETHYL ACETAL