99% High Quality Food Grade Baking Soda/Sodium Bicarbonate Powder

natural soda is firstly dissolved into solution (na2co3) and filtrated. the clear solution is then fed to carbonizing tower ;  accordingly, co2 is compressed and bubbled up from the bottom of the tower, after carbonization, the slurry will be flowed from the bottom and separated. dried to the finished product.
item
    
standard
    
testing results
color
    
white
    
pass test
form
    
crystalline powder
    
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total alkalinity(as nahco3)
    
99.0%-100.5%
    
99.8%
loss on drying
    
≤0.20%
    
0.16%
ph value(10/l)
    
≤8.5
    
7.8
ammonium salt
    
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pass test
clarity degree
    
pass test
    
pass test
chloride(cl)        ≤%
    
≤0.40%
    
0.35
whiteness
    
≥85.0
    
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arsenic(as as)mg/kg
    
≤1.0
    
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heavy metal(as pb)  mg/kg
    
≤5.0
    
2.54