ammonia
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D：Quantity Standard：UDC 661.518：543.06
ITEMS |
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superior product |
Top quality goods |
Qualified produc |
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The content of nitrogen ,% ≥ |
99.9 |
99.8 |
99.6 |
Residue content,% ≤ |
0.1(gravimetric method) |
0.2 |
0.4 |
Water ,% ≤ |
0.1 |
_ |
_ |
The content of water ,mg/kg ≤ |
5(gravimetric method) 2(infrared spectroscopy) |
_ |
_ |
The content of iron , mg/kg ≤ |
1 |
_ |
_ |
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