Potassium metaphosphate Chemical Properties

Melting point:

807°C

Boiling point:

1320℃ [CRC10]

Density 

2,393 g/cm³

solubility 

Aqueous Acid (Slightly)

form 

Powder

Specific Gravity

2.393

color 

white

Odor

at 100.00?%. odorless

Water Solubility 

g/100mL solution H2O: 0.0041 (25°C) [KRU93]

InChI

InChI=1S/K.HO3P/c;1-4(2)3/h;(H,1,2,3)/q+1;/p-1

InChIKey

OQZCJRJRGMMSGK-UHFFFAOYSA-M

SMILES

P([O-])(=O)=O.[K+]

CAS DataBase Reference

7790-53-6(CAS DataBase Reference)

NIST Chemistry Reference

Potassium metaphosphate(7790-53-6)

EPA Substance Registry System

Potassium metaphosphate (7790-53-6)

Safety Information

Safety Statements 

22-24/25

Potassium metaphosphate Usage And Synthesis

Chemical Properties

White powder.Soluble in dilute acids; slightly soluble in water.

Uses

Pharmaceutic aid (buffering agent).

Uses

Potassium Metaphosphate is a substitute for sodium phosphate in low-sodium foods. it also functions as a fermentation nutrient and buffer.

Definition

ChEBI: Potassium metaphosphate is a potassium salt of metaphosphoric acid. It has a role as a fertilizer, a buffer, a food emulsifier, a raising agent and a sequestrant. It is an inorganic phosphate and a potassium salt. It contains a trioxidophosphate(1-).

Agricultural Uses

Potassium metaphosphate is the salt of metaphosphoric acid. It is a readily available source of phosphorus and potassium to plants, and comprises 60% phosphorus and 40% potassium (K₂O). When pure, it contains almost 100% plant food. Potassium metaphosphate, K₆(PO₃)₆?H₂O, is made by reacting phosphorus pentoxide (P₂O₅) with potassium chloride (KCl) at a high temperature. It is slightly soluble in water and makes phosphate available after hydrolysis. Although slightly soluble in water, it is readily soluble in ammonium citrate solution.

Potassium metaphosphate(7790-53-6)Related Product Information

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