Zhaoyuan Chenming Chemical Co., Ltd.   

1) appearance of brown liquid 2) fluorescence intensity (equivalent to standard product), 35 points 3) whiteness (difference of whiteness with standard white matter% or WCTE standard sample whiteness% or WCTE) greater than -34) moisture,% less than 605) chromatic light approximate standard 6) water insoluble mass fraction,% less than 5 performance characteristics: 1. water soluble, soluble in 3 to 5 times volume of boiling water, each liter of boiling water can dissolve 300g, dissolved in 150g in cold water, 150g dissolved in cold water, 2. is not sensitive to hard water, Ca2+ and Mg2+ do not affect its whitening effect. 3. resistance