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Content (%)
|
99.9
|
Moisture content (%)
|
8.7
|
Carbonizable substance
|
0.6
|
Ash content of sulfuric acid (%)
|
0.02
|
Chloride (%)
|
<0.005
|
Sulphate (%)
|
<0.015
|
Oxalate (%)
|
<0.01
|
Calcium salt (%)
|
<0.02
|
Total arsenic (mg / kg)
|
<0.2
|
Lead (mg / kg)
|
0.037
|