Cardanol

Cardanol

Commercial CNSL Under reduced Pressure was distilled at a temperature of 225o C under reduced pressure (1mm of Hg) to obtain cardanol. A pale yellow to brown liquid of refractive index 1.5 at 30o C .Cardanol is a phenol which has a C15 unsaturated alkyl chain with 1-3 double bonds at m-position.Cardanol is a mixture of cardanol 90% and cardol 10%.

Specifications of Cardanol

Properties	Grade-I	Grade-II

Appearance	Water White	Pale Straw Yellow
Color on Gardner Scale	Max 5	Min 12
Specific Gravity @ 30 Degree Celsius	0.92+-0.01	0.93+-0.01
Viscosity CPS	Max 45	Max 65
Viscosity @ 30 Degree Celsius Sec bt f4 CUP	21+-1	25+2
Ash Content %	NIL	NIL
Volatiles at 163 Degree Celsius	Max 1.0	Max 1.0
Acid Value mg KOH/g	Max 3.0	Max 5.0
Iodine Value (wiz's method)	200+-20	200+-20
Polymerization time in Mins	Max 12	Max 10
Boiling point Degree celcius @ VAC.3 to 5 TORR	215-218	225-230

Application of Cardanol

Activity	Application
Laminating Industry	Resole type cardanol formaldehyde resin solution in slcohol are used as adhesives for laminates
All types of bondings	Alkemine condensates of cardanol are powerful adhesives used in metal to metal bonding
Insulating Varnish	Cardanol used as diluents in bis-phenol based epoxy resin provides extremely good insulating properties.
Putty and electrical	Polyurethane resins of cardanol are used in sealants encapsulating puttys.
Surface active agents (Emulsifiers, dispersants and wetting agents)	Ethoxylated cardanol and sulfonated ethers of cardanol are used as oil in water emulsifiers in pesticides and as wetting agent in textile industries.

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