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

molecular formula: na2so4
molecular weight: 142.04
cas no:15124-09-1
properties: white crystalline powder. relative density is 2.68 and melting point is 884℃. soluble in water and glycerin, insoluble in ethyl alcohol.
uses: as analytical reagent, dehydrant, interfere inhibitor in atomic absorption spectrum analysis, accessory for drugs and foods.
standard: maximum assay of impurities is in %

specification/item

analytically pure-ar

chemically pure-cp

high pure

assay(na2so4) /%

≥99.0

≥98.0

≥99.0

ph value(50g/l solution, 25℃)

5.0~8.0

5.0~8.0

5.0~8.0

clarity test

qualified

qualified

qualified

water insoluble matter

≤0.005

≤0.02

≤0.02

loss on ignition

≤0.2

≤0.5

≤0.5

chloride (cl)

≤0.001

≤0.005

≤0.005

phosphate (po4)

≤0.001

≤0.002

total nitrogen (n)

≤0.0005

≤0.001

≤0.002

potassium (k)

≤0.01

calcium (ca)

≤0.002

≤0.005

iron (fe)

≤0.0005

≤0.001

≤0.001

heavy metal (pb)

≤0.0005

≤0.002

≤0.001

packing: woven bag lined with plastic bag, kraft paper bag, or fiber drum, net weight is 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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