Sodium Hexametaphosphate (SHMP)
Product Overview:
Identification of Substance: sodium polyphosphate
CAS #: 68915-31-1
Sodium hexametaphosphate (SHMP) is a versatile polyphosphate compound used across water treatment, food processing, and chemical manufacturing applications. It is commonly employed as a scale and corrosion inhibitor and sequestering agent in industrial and municipal water treatment, binding calcium and magnesium ions to prevent mineral deposit formation. Additionally, it serves as a food additive for texture improvement and moisture retention in meat, seafood, and dairy products. SHMP is also utilized as a dispersant in detergents and ceramics manufacturing, improving particle suspension and reducing viscosity in clay slurries. Furthermore, it finds applications in general chemical manufacturing processes requiring a soluble, food-grade polyphosphate.
Relevant identified uses: Sequestrant
Documentation:
Technical Information:
P2O5 Content
≥ 67.0 %
pH 1% solution
6.0 – 7.0
Water insoluble
≤ 0.15 %
Loss of Weight (4h/105oC)
≤ 0.20 %
Loss on ignition (550oC)
≤ 1.0 %
Chain Length
12 – 17
Residue on sieves – 1.0 mm
≤ 50 %
Residue under sieves – 1.0 mm
≤ 25 %
As
≤ 40 ppm
F
≤ 5.0 ppm
Pb
≤ 2.0 ppm
Cd
≤ 1.0 ppm
Hg
≤ 1.0 ppm
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