| ≥1 piece |
Index items
|
Index
|
Total alkali content (NaHCO 3 )mass fraction / %
|
99.0~100.5
|
drying loss mass fraction / %≤
|
0.20
|
PH Scale of aqueous solution (10g/L) ≤
|
8.5
|
arsenic (As) mass fraction / %≤
|
0.0001
|
heavy metal ( with Pb) mass fraction / %≤
|
0.0005
|
ammonium salt content
|
through experiment
|
clarity degree
|
through experiment
|
chloride (with cl) mass fraction / % ≤
|
0.40
|
whiteness ≥
|
85
|
Mainly used in food additive (loosening agent), fodder additive, fire protection, medicine, chemicals, detergent, leather-processing, rubber-fillings etc.