Potassium pyrophosphate
CAS NO. 7320-34-5
MW:K4O7P2
MF:330.336522
1.Performance and use:
At room temperature, it is a white crystalline powder or particle with strong hygroscopicity in air. It is highly soluble in water but insoluble in ethanol. The aqueous solution is alkaline and has the effect of inhibiting food spoilage and fermentation. The pH value of a 1% Chemicalbook aqueous solution is about 10.5. At 25 ºC, the solubility of potassium pyrophosphate in 100g of water is 187g. It hydrolyzes into potassium phosphate in acidic or alkaline solutions and mixes with water to form a viscous slurry
Potassium pyrophosphate has all the properties of other polymeric phosphates, similar to sodium pyrophosphate, but with higher solubility and the ability to chelate with alkaline earth metals and heavy metal ions; It can form stable complexes with Ca2+and Mg2+in hard water, thereby softening hard water, improving washing ability, and removing dirt. It can also form a protective film on the surface of metals such as iron, lead, zinc, aluminum, etc; Pyrophosphate ion (P2O74-) has strong dispersibility for finely dispersed solids and can promote the homogeneous mixing of fine and trace substances. High purity low iron potassium pyrophosphate has stable pH buffering ability and can maintain the pH value of the solution for a long time
2.Technical indicators
(Appearance) whrite powder whtite powder
(K4P2O7) ≥99.0% 99.35%
(insoluble substance ) ≤ 0.10% 0.031%
PH(1% water solution) 10.5±0.5 10.42
(Fe) ≤ 0.005% 0.0025%
25kg/bag
,Ventilation and low-temperature drying of the warehouse
4.Safety protection
If inhaled, remove patient to fresh air. If breathing stops, administer artificial respiration.
Skin contact Flush with soap and plenty of water.
EYE CONTACT Use caution and flush eyes with water.
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