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PRODUCTS >> Fine inorganic chemicals

sodium tripolyphosphate (STPP)

Formula: Na5P3O10
Molecular Weight: 367.86
CAS #: 7758-29-4
Description: white powder or white crystalline granular
Specifications:

item

specifications

tech. grade

food grade

assay % ≥

94.0

94.0

total phosphate (as P2O5)  % ≥

57.0

57.0

water-insoluble matters % ≤

0.1

0.05

iron (Fe) % ≤

0.01

0.01

PH

9.2-10.0

9.5-10.0

heavy metals(as Pb) % ≤

-

0.001

arsenic % ≤

-

0.0003

fluoride (as F) % ≤

-

0.003

whiteness % ≥

90.0

90.0

Application: it is used as one of the main auxiliaries for synthetic detergent,synergist for soap;water softener,tanning agent for leather making,auxiliary for dyeing;as an effective dispersion agent for suspension solution of coating kaolin,magnesium oxide,calcium carbonate and drilling mud etc.
as an oil contamination resistance agent in paper production.
In food industry it is used as quality improver in the process of canned food,fruit juice drinks,foodstuff from milk or soybeans.It can tender the meat in canned ham and soften the skin of horse bean in canned horse bean.It may also serves as a softener or densifier in foodstuff industry.
Packing: 25/50/1000kg net bag or per customer’s request.
 
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