Hydroxycitronellal
  • HydroxycitronellalHydroxycitronellal

Hydroxycitronellal

Hydroxycitronellals cas-kode er 107-75-5

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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


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