|Item||Industrial grade||Food grade|
|Main contents (Na5P3O10 )%≥||94.0||94.00|
|Phosphorus pentoxide（P2O5） %≥||56.5||57.0|
|Water insoluble %≤||0.15||0.10|
|PH value of 1% solution||9.2-10.0||9.4-10.0|
|Heavy metals, as Pb %≤||/||0.001|
|Arsenic,as As %≤||/||0.0003|
|Fluoride, as F %≤||/||0.003|
In daily washing water, there is usually hard metal ions, which will form insoluble metal salts with the active substances in soap or detergent to reduce the washing ability during washing process. So it is necessary to add something to detergents to make the metal ions contained in the washing water into harmless substances. (1). The buffer function of sodium tripolyphosphate stpp has strong chelating effect on metal ions, which can eliminate the adverse effect on washing. (2). In addition, it can captures the metal components contained in dirt and acts to dissociate the dirt during washing process. (3).It has the effect of swelling and solubilizing the protein in dirt, as well as dissolving the gel. (4). It can also promote the emulsification of fat and disperse solid dirt. (5). Meanwhile, it has the effect that prevent powder-detergent from agglomeration and keep it dry and granular.
STPP chemical, as water retention agent, quality improver, PH value regulator, metal chelating agent, can be widely used in dairy food, meat food, baked food, flour food, seasoning food, etc… It should be noted is that as food additive, it has strict requirements on the amount of use. Compared with industrial grade STPP, the food grade sodium tripolyphosphate has more stringent requirements and more inspection and monitoring programs in producing. The raw material for the production of STPP food grade must be food grade or genuine products, ordinary industrial grade products can’t be used, such as, it must use genuine thermal phosphoric acid, not wet-processed type, even the orthophosphoric acid is food grade.
Sodium tripolyphosphate (STPP) is often used as scale inhibition in cooling water treatment. For that, small amount of polyphosphate added to water can effectively destroy the normal growth process of calcium carbonate and other crystals. So as to prevent the formation of calcium carbonate scale. In addition, it is also one of the commonly used corrosion inhibitors for cooling water. Adding it to water in the proper concentration can prevent or slow the corrosion of water on metal materials or equipment.
Chemate Company is a one-stop phosphorus chemical products supplier integrating researching and development, production and sales. Our main products include phosphoric acid, sodium hexametaphosphate, trisodium phosphate, sodium acid pyrophosphate, dismmonium phosphate, etc., which serve the food processing industry, fertilizer industry and other various types of industrial fields. Since the establishment of our company, we always provide perfect service to our clients with excellent quality and reasonable price. After a long time of hard work and persistent pursuit, we have won a good reputation in the industry and got high praised from our customers. After years of continuous development and progress, our products have already exported to many countries all over the world and we have established a long-term stable cooperation relationship with our clients. If you would like to purchase this kind of products, please free free to contact us for price. We guarantee to provide you with the high quality sodium tripolyphosphate (stpp) 94% chemical.
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