sodium tripolyphosphate

sodium tripolyphosphate,white powder, melting point 622 , soluble in water, calcium and magnesium and other metal ions chelating capacity significantly, can soften hard water to make suspension into solution, there is a weak alkaline, non-corrosive, is an inorganic surfactants, lubricants and fat for a strong emulsification, bulk density is usually divided into low-density 0.35-0.5g/cm 3, medium density 0.51-0.65g/cm 3, high-density 0.66-0.9g/cm 3; sodium tripolyphosphate have I type (high type) and II (low temperature type) two kinds of crystal morphology, chemical properties of the two the same,
The difference is that thermal stability and moisture-I than II type, while both the solubility, dissolution is different when the hydration heat

Properties: white powder, melting point 622 , soluble in water, calcium and magnesium and other metal ions chelating capacity significantly, can soften hard water to make suspension into solution, there is a weak alkaline, non-corrosive, is a inorganic surface active agent, for lubricating oil and fat has a strong emulsification, bulk density is usually divided into low-density 0.35-0.5g/cm 3, medium density 0.51-0.65g/cm 3, high-density 0.66-0.9g/cm 3; sodium tripolyphosphate have I type (high type) and II (low temperature type) two kinds of crystal morphology, chemical properties of the two the same,
The difference is that thermal stability and moisture-I than II type, while both the solubility, dissolution when the hydration heat are different.
Uses: used as a detergent additive product can also be used in petroleum, metallurgy, mining, papermaking, water treatment and so on. Mainly used as synthetic detergent additive, used in soap synergist and prevent precipitation of soap and grease from frost. Of oil and fat has a strong emulsification can be used to adjust the PH value of the buffer liquid soap. Industrial water softener. --- Tanning agent. Dyeing auxiliaries. Paint, kaolin, magnesium oxide, calcium carbonate and other industries, when suspended in the preparation of dispersant. Drilling mud dispersants. Paper industry as anti-oil agents. In the food industry for the canned food, juice drinks, dairy products, soy milk and other quality improvers,
Primarily for tenderizing canned ham, beans, canned convinces Yuba softening can also be used as a softener and thickening agent.

Industrial sodium tripolyphosphate should meet the requirements in the following table (GB9983-2004)
Project Index
Premium grade First grade Qualified product
Whiteness,%

sodium tripolyphosphate
stpp 94% industry grade
stpp 94% industry grade