... water treatment,detergent,oil field,printing,dyeing Sodium Hexametaphosphate 68 % SHMP (tech grade)Chemical formula: (NaPO3)6Molecular ... industrial use, such as oil field, paper-making, textile, dyeing, petrochemical industry,tanning industry, metallurgical industry and building material ... a water sortening agent in solution for printing, dyeing ,and boiler; Diffusant in papermersing medium, high ...