Chinese name: Vanillin
English name :Vanillin
CAS:121-33-5
EINECS number :204-465-2
Molecular formula :C8H8O3
MDL number :MFCD00006942
Molecular weight :152.15
Appearance: White or cream white acicular crystal, with vanilla aroma and rich milk aroma.
Solubility :1g of the product dissolved in 100ml water, 16ml80℃ hot water, 20ml glycerin. Soluble in alcohol, chloroform, ether, carbon disulfide, acetic acid and pyridine, soluble in oil and alkali hydroxide solutions, the solution is acidic to litmus. Slow oxidation by exposure to wet air. It's slightly sweet.
Appearance: white acicular crystal. It has a sweet smell. Soluble in 125 times water, 20 times ethylene glycol and 2 times 95% ethanol, soluble in chloroform.
Melting point :81-83 °C(lit.)
Boiling point :170 °C15 mm Hg(lit.)
Density :1.06
Vapor density :5.3 (vs air)
Vapor pressure :> 0.01 mm Hg (25 °C)
FEMA:3107
Refractive index :1.4850 (estimate)
Flash point :147 °C
Storage conditions :2-8°C
Solubility :methanol: 0.1g /mL, clear
Acidity factor (pKa):pKa 7.396±0.004(H2O I = 0.00t = 25.0±1.0)
Form: crystalline powder
Color: White to light yellow
PH value :4.3 (10g/l, H2O, 20℃)
Odor :at 100.00 %. vanilla
Scent Type :vanilla
Water solubility :10 g/L (25 ºC)
Sensitivity :Air & Light Sensitive
JECFA Number:889
Merck: 14993 2
Detection method :HPLC
BRN:472792
Stability: Stable. It may change color when exposed to light. Sensitive to moisture. Incompatible with strong oxidant and perchloric acid.
LogP:1.17 at 25℃
Use 1
Used as food flavor, daily chemical flavor, pharmaceutical intermediates
Preparation method
Method one
It is derived from the vanilla bean.
Guaiacol is obtained from o-aminobanisole hydrolyzed by diazo, condensed with formaldehyde in the presence of nitrosodimethylaniline and catalyst, or reacted with trichloromethane under the catalysis of potassium hydroxide, and then purified by extraction, vacuum distillation and crystallization. It can also be made from wood pulp waste liquid, eugenol, guaiacol, safrole, etc.
China
