The appearance of Tonghai Radish Red power is deep red, liquid is brown purple. It can be dissolved in water and alcohol solution easily, but not in oil. The powder can't absorb moisture and can't form solid. Color of solution changes when PH is different. The color charging from orange-red to red- purple to aubergine to blue when PH is between 1-8. It is red region when PH is in 1-6, the color is ideal stability. The solution color becomes blue and is unstable when PH is above 7. The color of solution（in an acidic medium）can not fade under light for a long time, and also has good resistance to high temperature, the color can not change with long time boiling.
Items
Enterprise Standard
Powder
Color Value E（1%、1cm、PH3.0、513±3nm）
30～80
PH
2～4
Loss on Drying（105℃, 3hours）
% Less than
10
Ash
% Less than
2
Lead（as Pb）
mg/kg Less than
5
Arsenic（as As2O3）
mg/kg Less than
2
Total Plate Count
cfu/g Less than
1,000
Pathogenic Bacteria
Negative
·Usage Reference(in compliance with GB2760：Hygienic standards for uses of food additives) The amount of usage is according to production needs (no maximum usage limit).
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