Appearance |
Fine Black Powder |
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Methylene Blue Value mg / gm. |
220 mg / gm. |
240 mg / gm. |
280 mg / gm. |
320 mg / gm. |
350 mg / gm. |
400 mg / gm. |
Iron Contents |
250 ppm |
250 ppm |
200 ppm |
100 ppm. |
80 ppm. |
70 ppm. |
pH |
6.5 - 7.5 |
6.5 - 7.5 |
6.5 - 7.5 |
6.5 - 7.5 |
6.5 - 7.5 |
6.5 - 7.5 |
Moisture |
5% |
5% |
5% |
5% |
5% |
5% |
Bulk Density |
260 g / 1 |
250 g / 1 |
230 g / 1 |
200 g / 1 |
200 g / 1 |
200 g / 1 |
Ash Contents |
3% |
2.5 % |
2 % |
1.5 % |
1 % |
0.8 % |
Acid Soluble Matter |
1.5% w / w |
1.5% w / w |
0.8% w / w |
0.5% w / w |
0.3% w / w |
0.3% w / w |
Water Soluble Matter |
1.5% w / w |
1% w / w |
0.5% w / w |
0.2% w / w |
0.1% w / w |
0.1% w / w |
Chloride, Sulphate & |
Passes U.S.P. |
Passes U.S.P., B.P. |
Appearance |
Fine Black Powder |
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Methylene Blue Value mg / gm. |
150 mg / gm. |
200 mg / gm. |
250 mg / gm. |
300 mg / gm. |
350 mg / gm. |
Iron Contents |
1000 ppm |
1000 ppm |
800 ppm |
600 ppm. |
500 ppm. |
pH |
9 to 11 |
9 to 11 |
9 to 11 |
9 to 11 |
9 to 11 |
L.O.D. |
12% |
10% |
10% |
10% |
8% |
Ash Contents |
12 - 15% |
12 - 15% |
10 - 12% |
10 - 12% |
10 - 12% |
Acid Soluble Matter |
6.5% w / w |
6.5% w / w |
6.0% w / w |
5.0% w / w |
4.5% w / w |
Water Soluble Matter |
5.0% w / w |
5.0% w / w |
4.0% w / w |
4.0% w / w |
4.0% w / w |