item

specification

purity

≥98.0-101.0%

loss on drying

≤0.5%

sulfate (so4)

≤1000ppm

ph value 100g/l

5.5-7.5

arsenic as

≤1ppm

anline

≤1ppm

heavy metals (as pb)

≤10ppm

selenium

≤30ppm

cyclohexylamine

≤25ppm

dicyclohexylamine

≤1ppm

transparency

≥95%

sulphamic acid

≤0.15%

absorbency(100g/l)

≤0.10