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hotline: 86-15076659665
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potassium carbonate

molecular formula: k2co3
molecular weight: 138.21
cas no: 584-08-7
[character] white powder or granule, relative density of 2.428, melting point of 891℃, easy to deliquesce, soluble in water solution and alkaline, insoluble in ethanol and ether.
[to use] used as an analytical reagent, such as a reference reagent, silicate flux, carbon dioxide gas absorbent, and preparation of potassium salt.
[standard]

specification

name of index

analytically pure-ar chemically pure-cp
content(k2co3) /% ≥99.0 ≥98.0
clarity test qualified qualified
loss on drying 1.0 2.0
water insolubles ≤0.005 ≤0.03
chloride(cl) ≤0.003 ≤0.01
sulfur compounds(so4) ≤0.003 ≤0.01
total nitrogen(n) ≤0.001 ≤0.01
phosphate and silicate(sio3) ≤0.005 ≤0.02
sodium(na) ≤0.05 ≤0.1
magnesium(mg) ≤0.002 ≤0.005
铜(cu) ≤0.0005 ≤0.001
calcium(ca) ≤0.002 ≤0.02
ferrum(fe) ≤0.0005 ≤0.002
lead(pb) ≤0.0005 ≤0.001

[packing] plastic inside and outside woven, kraft paper bag or cardboard bucket, net weight 25kg.

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langfang tianke biotechnology co., ltd.
add: sanghang industrial park, dacheng county,
hebei, china
tel: 86-15076659665 manager ma
fax: 86-316-5569332 
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