Product name:  Sodium hexametaphosphate
Alias:  Metaphosphoric acid, hexasodium salt; Hexasodium metaphosphate; Glassy sodium; Graham's Salt, Sodium Polymetaphosphate; SHMP; Sodium Hexameta phosphate; sodium henamephosphate; ,8,10,12-hexaoxide; Sodium Hexametapho; Sodium Hexamethaphosphate
CAS Number:  10124-56-8
EINECS Number:  233-343-1
Molecular formula:  (NaPO3)6
Molecular weight:  611.7704
Physical and chemical properties:
Property Colorless transparent glass flakes or white granular crystals.
Melting point 616℃ (decomposition)
Relative density 2.484 (20℃) 
Solubility Easily soluble in water, insoluble in organic solvents.
Product Uses: used as water softener, detergent, preservative, cement hardening agent, fiber and bleaching and dyeing cleaning agent, also used in medicine, food oil, printing and dyeing, tanning, papermaking, etc.