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langfang tianke biotechnology
professional production base of general chemical reagent and pharmaceutical accessories
hotline: 86-15076659665
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potassium sulfate

molecular formula: k2so4
molecular weight: 174.26
cas no: 7778-80-5
[character] colorless or white crystal or powder. it tastes bitter and salty. the density of 2.662. melting point 1069℃, boiling point 1689℃. soluble in water, insoluble in ethanol, acetone and carbon disulfide.
[to use] used as analytical reagents, such as reference reagents, kai-type nitrogen determination catalysts. it is also used in the preparation of potassium salts and the pharmaceutical industry. used as a medicine (laxative). it is also used as biofertilizer, and is used to make alum, glass and potash.
[standard] the impurity content is calculated by the highest content

specification

name of index

analytically pure-ar chemically pure-cp
content (k2so4) ≥99.0 ≥98.5
ph (50g/l,25℃) 5.0~8.0 5.0~8.0
clarity test qualified qualified
water insolubles ≤0.005 ≤0.01
chloride(cl) ≤0.0005 ≤0.001
total nitrogen(n) ≤0.0005 ≤0.001
sodium (na) ≤0.03 ≤0.1
calcium(ca) ≤0.01 ≤0.02
ferrum(fe) ≤0.0002 ≤0.0005
arsenic(as) ≤0.0001 ≤0.0005
heavy metal (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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