Cas 7758-29-4 Sodium Tripolyphosphate Stpp 94%

It appears you're providing information about Sodium Tripolyphosphate (STPP), also known as CAS 7758-29-4. Here's a summary based on the details provided:

Chemical Compound:
CAS Number: 7758-29-4
Name: Sodium Tripolyphosphate (STPP)
Purity: 94%
Physical Properties:
Appearance: White powder
Apparent Density: 0.35-0.90 g/ml
Melting Point: 622A C
Solubility: Easily dissolves in water
pH: Alkaline (pH value of 1% solution is 9.7)
Hydrolysis: Can hydrolyze into phosphate in water
Metal Ion Complexing: Good ability to complex metal ions
Water Softening: Can be used to soften water
Surfactant Properties: Exhibits some surfactant properties
Applications:
In Detergents:
Usage: Primarily used as a component of commercial detergents.
Function: Acts as a "builder" or water softener in detergent formulations.
Mechanism: In hard water containing high concentrations of Mg2+ and Ca2+, STPP prevents deactivation of detergents by binding tightly to these metal ions (chelating agent), thus preventing interference with sulfonate detergents.