3,7-Dimethyl-7-hydroxyoctanal
- Product Name
- 3,7-Dimethyl-7-hydroxyoctanal
- CAS No.
- 107-75-5
- Chemical Name
- 3,7-Dimethyl-7-hydroxyoctanal
- Synonyms
- Lilyl aldehyde;7-HYDROXYCITRONELLAL;LAURINE;CITRONELLAL HYDRATE;HYDROXYCITRONELLAL(AS);3,7-dimethyl-7-hydroxy-1-octana;OCTANAL, 7-HYDROXY-3,7-DIMETHYL;Fixol;Phixia;Hycelea
- CBNumber
- CB5726475
- Molecular Formula
- C10H20O2
- Formula Weight
- 172.26
- MOL File
- 107-75-5.mol
3,7-Dimethyl-7-hydroxyoctanal Property
- Melting point:
- 22-23 °C
- Boiling point:
- 257 °C(lit.)
- Density
- 0.923 g/mL at 25 °C(lit.)
- vapor pressure
- 0.547Pa at 20℃
- refractive index
- n20/D 1.448(lit.)
- FEMA
- 2583 | HYDROXYCITRONELLAL
- Flash point:
- >230 °F
- storage temp.
- Inert atmosphere,Store in freezer, under -20°C
- solubility
- Benzene (Slightly), Chloroform (Slightly), Methanol (Slightly)
- form
- Liquid
- pka
- 15.31±0.29(Predicted)
- Specific Gravity
- 0.93
- color
- Clear colorless
- Odor
- at 100.00 %. floral lily sweet green waxy tropical melon
- Odor Type
- floral
- Water Solubility
- 35g/L at 20℃
- JECFA Number
- 611
- Stability:
- Air Sensitive
- InChIKey
- WPFVBOQKRVRMJB-UHFFFAOYSA-N
- LogP
- 1.68 at 25℃
- 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
- 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
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
- Precautionary statements
-
P280Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
N-Bromosuccinimide Price
- Product number
- 82934
- Product name
- 7-Hydroxycitronellal
- Purity
- Odorant used in allergy studies
- Packaging
- 25g
- Price
- $101
- Updated
- 2024/03/01
- Product number
- CRM40908
- Product name
- Hydroxycitronellal solution
- Purity
- certified reference material, ampule of 1?mL
- Packaging
- 1mL
- Price
- $88.3
- Updated
- 2022/05/15
- Product number
- 66010
- Product name
- Hydroxycitronellal
- Purity
- analytical standard
- Packaging
- 1ml
- Price
- $63
- Updated
- 2022/05/15
- Product number
- W258318
- Product name
- Hydroxycitronellal
- Purity
- ≥95%, FCC, FG
- Packaging
- sample
- Price
- $54.6
- Updated
- 2024/03/01
- Product number
- W258318
- Product name
- Hydroxycitronellal
- Purity
- ≥95%, FCC, FG
- Packaging
- 1kg
- Price
- $143
- Updated
- 2024/03/01
3,7-Dimethyl-7-hydroxyoctanal Chemical Properties,Usage,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
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.
Chemical Properties
clear colourless liquid
Chemical Properties
Hydroxycitronellal has a sweet, floral, lily-type odor
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.
Definition
ChEBI: The tertiary alcohol arising from addition of water across the C2C double bond of citronellal.
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].
Taste threshold values
Taste characteristics at 50 ppm: sweet, waxy, green, floral and melon notes.
Flammability and Explosibility
Not classified
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.
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 Preparation Products And Raw materials
Raw materials
Preparation Products
3,7-Dimethyl-7-hydroxyoctanal Suppliers
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View Lastest Price from 3,7-Dimethyl-7-hydroxyoctanal manufacturers
- Product
- 3-7-Dimethyl-7-hydroxyoctanal 107-75-5
- Price
- US $0.00/kg
- Min. Order
- 1kg
- Purity
- 99.9%
- Supply Ability
- 10tons/month
- Release date
- 2024-04-07
- Product
- 3,7-Dimethyl-7-hydroxyoctanal 107-75-5
- Price
- US $8.00/kg
- Min. Order
- 1kg
- Purity
- 99%
- Supply Ability
- 2000
- Release date
- 2023-12-21
- Product
- 3,7-Dimethyl-7-hydroxyoctanal 107-75-5
- Price
- US $1.00/kg
- Min. Order
- 1kg
- Purity
- 99%
- Supply Ability
- 20tons
- Release date
- 2023-09-06