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Sodium nitrate
Sodium nitrate standard GB/T4553-2002

Item
Value
Premium grade
First grade
Salable product
sodium nitrate (NaNO3)( dry )    ≥
99.70
99.30
98.50
moisture                                         ≤
1.00
1.50
2.00
Water insoluble matter                ≤
0.03
0.06
-
Chloride (as NaCl ) ( dry )           ≤
0.25
0.30
-
sodium nitrate (NaNO2)( dry )   ≤
0.01
0.02
0.15
Na2CO3 ( dry )                              ≤
0.05
0.10
-
Fe                                                     ≤
0.005
-
Bulk degree                                    ≥
90.00
Remark :
1. moisture is determined by the test date befor the products leave factory;
2.Bulk degree is for anti-block additive item
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