|Jmol-3D images||Image 1| |Molar mass||611.7704 g mol-1| 628 °C,
901 K, 1162 °F 1500 °C, 1773 K, 2732 °F |Solubility in
water||soluble| |Solubility||insoluble in organic solvents|
|Refractive index (nD)||1.482| |LD50||3.053 g kg-1| |Other
anions||Trisodium phosphate |Related compounds||Sodium
trimetaphosphate| | (what is: / ?) Except where noted otherwise,
data are given for materials in their standard state (at 25 °C,
100 kPa) Sodium hexametaphosphate (SHMP) is a hexamer of
composition (NaPO3)6. Sodium hexametaphosphate of commerce is
typically a mixture of polymeric metaphosphates, of which the
hexamer is one, and is usually the compound referred to by this
name. It is more correctly termed sodium polymetaphosphate. It
is prepared by melting monosodium orthophosphate, followed by
rapid cooling. SHMP hydrolyzes in aqueous solution, particularly
under acidic conditions, to sodium trimetaphosphate and sodium
orthophosphate. SHMP is used as a sequestrant and has
applications within a wide variety of industries,