Home
   Profile
:: Products  
   Product Application
   Services
   Get In Touch
   Enquiry

 

 

 

 

 

 

P r o d u c t s

C A S H E W  N U T  S H E L L  L I Q U I D (CNSL)

 

Cashew nut shell liquid is one of  the economical sources naturally occurring 

PHENOL. The Cashew nut  tree in India,  it grows widely along west coast 

and in southern region. CNSL is present to the the extent of 32% to 35% in 

the shell by weight. But due to commercial difficulty it is extracted to only

18% to 20%.CNSL  contains  52% cardanol , 10%  cardol  and  remaining 

polymeric material.The requirement of various characteristics for cashew nut

 shell liquid  laid down in Indian standards as follows:

 

PROPERTIES 

RESULTS 

Specific Gravity At 30oC 0.950-0.970
Colour Brown     
Viscosity   at 30oC in centipoises 550  Max.    
Moisture percent By weight    1% Max.
Matter insoluble in Toulene % by weight  2% Max.
Loss of weight on heating  % by weight  2%  Max.   
Ash percent by heating 2%  Max.
Iodine Value     (Wij's method)    250 Min.

 

 

 

 

 

 

C A R D A N O L

 

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%. 

 

 

PROPERTIES 

RESULTS 

Colour Pale Straw
Ref Index 1.5
Viscosity 45-55 Cps
Density 0.927-0.935
Molecular Weight 300
pH 6
Boiling Point 370oC
Iodine Value (Wijís method) 220 Min
Hydroxyl Value 180-200
Acid value 5 Max
Solubility In Toulene or Benzene

  

 


 

 

FRICTION DUST

Cashew Friction Dust is used in brake lining,disc pads,clutch plate and brake blocks ( as a stabilizing agent in brake products).The reaction  of cashew nut shell liquid and Paraformaldehye leads to crosslinking of product which is know as Friction Dust.

 

 

 

DI-NUCLEAR PHENOL (NEW PRODUCT)

UNDER CONSTRUCTION

 


Shyam Pheno-Chem Pvt Limited,  Hyderabad, India.