Potassium Fluorozirconate CAS NO.16923-95-8

items

electronic-grade

export grade

industrial grade

assay (k₂zrf₆) %

≥99.5

≥99.0

≥98.0

chloride (cl) %

≤0.01

≤0.05

≤0.2

fe %

≤0.0005

≤0.002

≤0.02

heavy metal (pb) %

≤0.0005

≤0.002

≤0.005

free acid (as hf) %

≤0.001

≤0.002

≤0.05

sulfate (so₄^2-) %

≤0.002

≤0.005

≤0.02

zr(hf)o₂ %

43.3-43.7

43.0-43.5

42.5-43.2

phosphate (po₄^3-) %

≤0.01

≤0.005

--

zr %

≥31.5

≥31.5

≥31.0

na %

≤0.05

≤0.10

≤0.20

ti %

≤0.001

≤0.005

≤0.01

silicon (sio₂) %

≤0.05

≤0.10

≤0.20

water insoluble %

≤0.05

≤0.10

≤0.25

residue on ignition %

≤0.02

≤0.4

≤1.0

ph value (5% aq. solution)

5.5-6.5

5.5-6.5

5.5-6.5

intermediate inspection

appearance identification

white crystalline powder

white crystalline powder

white crystalline powder

loss on dry (105℃/2h) %

≤0.1

≤0.2

≤0.5

whiteness (70-90umgranularity) %

≥95

≥90

≥80

foreign substance detection

≤1mm/10

≤1mm/10

≤1mm/10

granularity (u.s.screen) mesh

90% pass 40-150 mesh

90% pass 40-150 mesh

不检

shelf life

two years

two years

two years

supply reference

production process

refined

synthesis of fluorozirconate acid

synthesis of potassium chloride

packing

25kg composite paper bag five layers/16t/(20')fcl

25kg composite paper bag four-layer /16t/(20')fcl

25kg composite paper bag 2 layers/16t/(20')fcl