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Liquid
manufacture |
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The
unit manufactures 400 MT of Cashewnut Shell Liquid per annum.
CNSL is a versatile industrial raw material with diverse use
in friction linings, paints and varnishes, laminating and epoxy
resins, foundry chemicals and as an intermediary of chemicals.
Cashew Nut Shell Liquid conforms to IS 840 of Bureau of Indian
Standards.
The residue after extraction of Cashewnut Shell Liquid is Shell
Cake, which is a very useful fuel and a substitute for firewood.
The innumerable industrial applications
of CNSL are based on the fact that it lends itself to polymerization
by various means. Simple phenols from petrochemicals have restrictions
and hence the ranges of products obtained from them are a few.
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- Addition
polymerization the side chain double bonds.
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Condensation polymerization at the ortho and para positions
of the ring with phenolic various chemicals.
- Polymerization
after chemical modification.
- Oxidative
polymerization.
- Polymerization
by physical means: heat, pressure, radiation, and electrical
discharge.
- Various
combinations of above methods.
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Specifications |
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The revised specification of Bureau of Indian
Standard, New Delhi, for untreated Cashewnut Shell Liquid (IS:840-1964)
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gravity 30º/30º |
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0.950
to 0.970 |
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Viscosity at 30ºc, in centipoises |
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550 |
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Moisture, percent by weight |
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1.0 |
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Matter insoluble in toluene, percent by weight |
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1.0 |
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Loss in weight on heating, percent by weight |
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2.0
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Ash, percent by weight |
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1.0
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Polymerization |
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Iodine
value |
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1) Time in minutes…………………………………………..….4
2) Viscosity at 30ºC, in centipoises……………………….….30
3) Viscosity after acid washing at 30ºC, in centipoises……..200
Colour shall be not deeper than dark brown when viewed by transmitted
light. |
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1) Wij’s method…………….…250
2) Catalytic method……………375 |
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Achal’s
Test Result |
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1)
Specific Gravity at 30ºC … … … 0.9573
2) Viscosity at 30ºC in centipoise ... … 102
3) Moisture percent by weight .. .. 0.364
4) Loss in weight, percent by weight .. 1.89
5) Matter insoluble in toluene, percent by weight .. <0.1
6) Ash percent by weight .. .. .. 0.989
7) Iodine value, Wij’s Method … … 282 |
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