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3,7-Dimethyl-7-hydroxyoctanal

3,7-Dimethyl-7-hydroxyoctanal
3,7-Dimethyl-7-hydroxyoctanal structure
CAS No.
107-75-5
Chemical Name:
3,7-Dimethyl-7-hydroxyoctanal
Synonyms
Fixol;Phixia;LAURINE;Hycelea;Cyclalia;Cyclosia;FEMA 2583;(S)-Laurinal;lilylaldehyde;Lilyl aldehyde
CBNumber:
CB5726475
Molecular Formula:
C10H20O2
Formula Weight:
172.26
MOL File:
107-75-5.mol

3,7-Dimethyl-7-hydroxyoctanal Properties

Melting point:
22-23 °C
Boiling point:
257 °C(lit.)
Density 
0.923 g/mL at 25 °C(lit.)
refractive index 
n20/D 1.448(lit.)
FEMA 
2583 | HYDROXYCITRONELLAL
Flash point:
>230 °F
storage temp. 
Inert atmosphere,Store in freezer, under -20°C
pka
15.31±0.29(Predicted)
form 
Liquid
Specific Gravity
0.93
color 
Clear colorless
JECFA Number
611
InChIKey
WPFVBOQKRVRMJB-UHFFFAOYSA-N
Substances Added to Food (formerly EAFUS)
HYDROXYCITRONELLAL
CAS DataBase Reference
107-75-5(CAS DataBase Reference)
NIST Chemistry Reference
Hydroxycitronellal(107-75-5)
EPA Substance Registry System
Octanal, 7-hydroxy-3,7-dimethyl- (107-75-5)
SAFETY
  • Risk and Safety Statements
Symbol(GHS) 
GHS07
Signal word  Warning
Hazard statements  H315-H317-H319
Precautionary statements  P280-P305+P351+P338
Hazard Codes  Xi
Risk Statements  38-41-43
Safety Statements  26-39-36/37
RIDADR  UN1230 - class 3 - PG 2 - Methanol, solution
WGK Germany  1
RTECS  RG7850000
HS Code  29124990

3,7-Dimethyl-7-hydroxyoctanal price More Price(28)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich W258318 Hydroxycitronellal ≥95%,FCC,FG 107-75-5 1 SAMPLE $50 2021-12-16 Buy
Sigma-Aldrich 82934 7-Hydroxycitronellal Odorant used in allergy studies 107-75-5 5g-f $29.2 2021-12-16 Buy
Sigma-Aldrich 82934 7-Hydroxycitronellal Odorant used in allergy studies 107-75-5 5 g $30.2 2021-12-16 Buy
Sigma-Aldrich 66010 Hydroxycitronellal analytical standard 107-75-5 1ml $53.7 2021-12-16 Buy
Sigma-Aldrich CRM40908 Hydroxycitronellal solution certified reference material, ampule of 1?mL 107-75-5 1 mL $77.6 2021-12-16 Buy

3,7-Dimethyl-7-hydroxyoctanal Chemical Properties,Uses,Production

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.

Chemical Properties

Hydroxycitronellal has a sweet, floral, lily-type odor

Chemical Properties

clear colourless liquid

Chemical Properties

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.

Occurrence

Reported found in pepper

Uses

Hydroxycitronellal is a fragrance for use in various perfumes, antiseptics, insecticides and household products; some perfumery uses (sweet pea Pois De Senteur; gardenia; cherry; melon; mint).

Uses

7-Hydroxycitronellal shows fungicide activity the strains of Candida tropicalis.

Preparation

The most important synthetic routes to hydroxydihydrocitronellal are listed as follows.
1) Synthesis from citronellal: One of the oldest routes to hydroxydihydrocitronellal is the hydration of the citronellal bisulfite adduct (obtained at low temperature) with sulfuric acid, followed by decomposition with sodium carbonate. A more recent development is hydration of citronellal enamines or imines, followed by hydrolysis.
2) Synthesis from citronellol. Citronellol is hydrated to 3,7-dimethyloctane-1,7- diol, for example, by reaction with 60% sulfuric acid. The diol is dehydrogenated catalytically in the vapor phase at low pressure to give highly pure hydroxydihydrocitronellal in excellent yield.The process is carried out in the presence of, for example, a copper–zinc catalyst; at atmospheric pressure, noble metal catalysts can also be used.
3) Synthesis from 7-hydroxygeranyl/-neryl dialkylamine: The starting material can be obtained by treatment of myrcene with a dialkylamine in the presence of an alkali dialkylamide, followed by hydration with sulfuric acid. The 7-hydroxygeranyl/-neryl dialkylamine isomerizes to the corresponding 7-hydroxyaldehyde enamine in the presence of a palladium(II)- phosphine complex as catalyst. Hydrolysis of the enamine gives 7-hydroxydihydrocitronellal [151].

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® (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.

3,7-Dimethyl-7-hydroxyoctanal synthesis

42822-96-8
107-75-5
Synthesis of 3,7-Dimethyl-7-hydroxyoctanal from 2-(2,6-Dimethyl-5-heptenyl)oxazolidine-3-ethanol

3,7-Dimethyl-7-hydroxyoctanal Preparation Products And Raw materials

Raw materials

Preparation Products


3,7-Dimethyl-7-hydroxyoctanal Suppliers

Global( 197)Suppliers
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career henan chemical co
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Hubei Jusheng Technology Co.,Ltd.
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Shandong chuangyingchemical Co., Ltd.
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Chongqing Chemdad Co., Ltd
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HENAN BON INDUSTRIAL CO.,LTD
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CONIER CHEM AND PHARMA LIMITED
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SIMAGCHEM CORP
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Hefei TNJ Chemical Industry Co.,Ltd.
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Hebei Zhanyao Biotechnology Co. Ltd
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admin@zhanyaobio.com CHINA 2099 58
Dideu Industries Group Limited
029-88380327
Service@dideu.com CHINA 30014 58

View Lastest Price from 3,7-Dimethyl-7-hydroxyoctanal manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2021-10-16 3,7-Dimethyl-7-hydroxyoctanal
107-75-5
US $10.00 / Kg/Bag 1KG 99% 20 tons Hebei Zhanyao Biotechnology Co. Ltd
2020-04-22 3,7-Dimethyl-7-hydroxyoctanal
107-75-5
US $0.10 / KG 1KG 99.0% 1000 tons Shaanxi Dideu Medichem Co. Ltd
2019-07-06 3,7-Dimethyl-7-hydroxyoctanal
107-75-5
US $1.00 / KG 1G 98% 100KG Career Henan Chemical Co

3,7-Dimethyl-7-hydroxyoctanal Spectrum


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