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UNDECYLENIC ACID
 

This is used in perfumery ,toiletries, cosmetics, medicinal application, etc. Its compounds, peach aldehyde and C16 aldehyde,find application in perfume formulations. As an fungicide it is used tropically in skin ointments and powders. It id also being used as antifoaming and surface active agent. As its sulfo – succinate derivative it is used in anti-dandruff shampoos. It is a colorless to pale yellow liquid, having a fruity rosly odour.

 
Physical Properties :  
 
Description Properties
Molecular Formula CH2 = CH(CH2)8 COOH
   
CAS No 112-38-9
   
Molecular Weight 184.3
   
Solubility Practically insoluble in water, miscible with Alcohol, Chloroform, Ether, Benzene, etc.
   
Identification Passes B.P. Test
   
Freezing Point 21-24°C
   

Refractive Index @ 25 °C

1.448 - 1.450
   
   
Colour:  
In Gardner Less than1
   
In APHA units Less than 80
   
Color in 5 2/4”
(Lovibond Cell)
Yellow,0.6 Red
   
Acid Value 300
   
Saponification Value 305Max
   
Iodine Value 136-139
   
Sulphated Ash 0.1% Max
   
Water Content 0.1 Max
   
Water Sluble Acids Passes B.P. Test
   
Neutral Fats & Mineral Oil Passes B.P. Test
   

 

 
 
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