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Quality standard: national standard GB 2440-2001
Index name | industrial | agriculture | |||||||
High-class | First-class | Qualified | High-class | First-class | Qualified | ||||
color | white | White or light grey | |||||||
Nitro-gen %≥ | 46.3 | 46.3 | 46.3 | 46.3 | 46.3 | 46.3 | |||
biuret %≤ | 0.5 | 0.9 | 1.0 | 0.9 | 1.0 | 1.5 | |||
H2O %≤ | 0.3 | 0.5 | 0.7 | 0.5 | 0.5 | 1.0 | |||
| Fe %≤ | 0.0005 | 0.0005 | 0.0010 |
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Basicity(NH3) %≤ | 0.01 | 0.02 | 0.03 |
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So4-2 %≤ | 0.005 | 0.010 | 0.020 |
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Water insoluble%≤ | 0.005 | 0.010 | 0.040 |
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size≥ | 90 | 90 | 90 | 90 | 90 | 90 | |||
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