| ≥1 piece |
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|
ITEM |
STANDARD |
ANALYTICAL METHOD |
|
Appearance |
White powder, gloss, no mechanical admixture |
GB /T 5492 |
|
Smell |
Innate odor, no peculiar smell |
GB /T 5492 |
|
Moisture(%) |
≤ 20.0 |
GB/T 12087 |
|
Whiteness(%) |
≥ 89.0 |
GB/T 22427.6 |
|
spot,pc/cm2 |
≤5.0 |
GB/T 22427.4 |
|
Ash(dry),(%) |
≤ 0.5 |
GB/T 22427.1 |
|
pH(33%) |
5.0~8.0 |
GB/T 8884 |
|
Fineness,(%) |
≥ 99.5 |
GB/T 22427.5 |
|
Peak viscosity(5%),BU |
≥ 1500 |
GB/T 22427.7 |
|
acetyl (%) |
≤ 2.5 |
GB 29925 |
|
SO2 (mg/kg) |
≤ 30 |
GB/T5009.34 |
|
Lead(Pb)/(mg/kg) |
≤ 1.0 |
GB/T 20380.3 |
|
Arsenic(As)/(mg/kg) |
≤ 0.5 |
GB/T 20380.1 |
|
aerobic bacterial count(cfu/g) |
≤ 10000 |
GB/T 4789.2 |
|
coli group(MPN/100g) |
≤ 30 |
GB/T 4789.3 |
|
pathogenic bacteria( staphylococcus aureus, shigella , salmonella) |
Absent |
GB/T 4789.4 GB/T 4789.5 GB/T 4789.10 |