Sodium-Tripolyphosphate(STPP)
CAS No: 7758-29-4
Molecular Formula: Na5P3O10
Uses:
[1]It is a solid inorganic compound used in a large variety of household cleaning products, mainly as a builder, but also in human foodstuffs, animal feeds, industrial cleaning processes and ceramics manufacture.
[2]STPP is widely used in regular and compact laundry detergents and automatic dishwashing detergents (in powder, liquid, gel and/or tablet form), toilet cleaners, surface cleaners, and coffee urn cleaners
[3]. It also provides a number of chemical functions including: Sequestration of "water hardness", enabling surfactants to function effectively; pH buffering; Dirt emulsification and prevention of deposition; Hydrolysis of grease; And dissolving-dispersing dirt particles.
[1]It is a solid inorganic compound used in a large variety of household cleaning products, mainly as a builder, but also in human foodstuffs, animal feeds, industrial cleaning processes and ceramics manufacture.
[2]STPP is widely used in regular and compact laundry detergents and automatic dishwashing detergents (in powder, liquid, gel and/or tablet form), toilet cleaners, surface cleaners, and coffee urn cleaners
[3]. It also provides a number of chemical functions including: Sequestration of "water hardness", enabling surfactants to function effectively; pH buffering; Dirt emulsification and prevention of deposition; Hydrolysis of grease; And dissolving-dispersing dirt particles.
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Indexes
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Industrial Grade
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Food Grade
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Na5P3O10%≥
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94.0
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94.0
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P2 O 5 %≥
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57.0
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57.0
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Water Insoluble Matter%≤
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0.15
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0.04
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Iron(Fe) %≤
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0.015
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0.006
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PH value (1% water solution)
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9.2-10.0
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9.5-10.0
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Heavy Metal (as Pb) %≤
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-
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0.001
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Arsenic (As) %≤
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-
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0.0003
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Fluoride (F) %≤
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-
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0.003
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Whiteness %≥
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92
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92
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density (g/cm3)
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0.35-0.9
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0.35-0.9
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Phase I
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10-30
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10-30
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