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Characters: white powder, melting point 622'c, soluble in water, of calcium and magnesium ions and other metal chelating significant ability to soften hard water to make suspension into solution, there is weak alkaline, non-corrosive, is a inorganic surfactants, lubricants and fat for a strong role in the 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; STPP are I-type (high temperature) and II (low temperature type) in two crystalline forms, chemical properties of the two the same, difference is that the thermal stability and hygroscopicity than I type II type, while the two solubility, hydration heat when dissolving are different. Uses: used as a detergent additive products, can also be used in petroleum, metallurgy, mining, papermaking, water treatment and so on. Mainly used as additives in synthetic detergent, synergist for soap grease and soap to prevent the article from precipitation and frost. Of oil and fat has a strong role in the emulsion can be used to adjust the PH value of the buffer liquid. Industrial water soft water. --- Tanning agent. Dyeing auxiliaries. Paint, kaolin, magnesium oxide, calcium carbonate, such as industry, when the preparation of suspension dispersant. Drilling mud dispersants. Paper industry agent used to prevent oil pollution. For the canned food industry, juice drinks, dairy products, soy milk, such as quality improver, the main tender for canned ham, canned broad beans make Yuba softening, emollient and thickening agent can also be used for.
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