Potassium Metaphosphate, E341, CAS no.7758-87-4, also known as MKP, appears as a white powder or granular, odorless, slowly soluble in water, potassium salt of phosphoric acid. As an experienced Potassium Metaphosphate manufacturer and supplier, we has been supplying and exporting Potassium Metaphosphate for almost 10 years, please be assured to buy from us. Any inquiries about price and the market trend please feel free to contact us, we will reply you within 1 working day. Potassium Metaphosphate Specification ITEM STANDARD APPEARANCE WHITE POWDER CONTENT(As P2O5),% 59 61.0 As, % 0.0003max. HEAVY METALS % 0.0015max. Pb,% 0.0002 max Hg,% 0.0001 max Cd,% 0.0001 max VISCOSITY 6.5 15 F, % 0.001max LOSS ON DRYING % 5.0max