Pondicherry Chemicals

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Sl.No.
 Characteristic
 Tech.Grade
 Critical Value
1)
Alumina content (as Al2O3)
 17% (Min)
 16.8% to 17.6%
2)
pH (of 5 % solution) Min
  2.8
  2.9 to 3.2
3)
Iron Content (percent by mass) Max
  0.01%
  0.004%
4)
Insoluble matter (percent by mass) Max
 0.30
 0.28