items of specification

standard

appearance

pink powder

moisture at 110’c for 2hs

maximum 17%

ph of 2% slurry in distilled water

3.5-7.5

bleeding or free dye content

maximum 0.4%

bulk density(g/ml)

0.15-0.4

retention on 325 mesh sieve

maximum 2%

arsenic (as as)

maximum 3ppm

heavy metal (other than pb)

maximum 40ppm

lead (as pb)

maximum 10ppm

mercury (as hg)

maximum 1ppm

micro test

maximum 100 micro org/g

dye content

20%-24%