Optical brightener BBU

Appearance:Light yellow uniform powder or granule
UV absorption:370±10
Max UV absorption wavelength:350nm
Performance characteristics:
Bluish tone;Solubility in cold water:200g/L;Solubility in boiling water:300g/L;Common affinity to cellulosic fiber;Stable tooxide,hypochlorite,reducing bleach;Resistant to alkali,hard water,but medium in acid.
Application:
Whitening of cotton,viscose,it has good compatibility with resin finishing agent; Whitening of surface sizing,coating of paper sheets,paper;
White discharging printing.
Recommended dosage:
Paper-making (absolute dry pulp):0.01-0.4%;
Surface sizing with starch,CMC,PVA:0.1-3g/L;
Coating with PVA,CMC,starch:0.03-0.4%(compared to weight of coating); Textile:0.1-0.5%.
Package: Fiber drum or PE bag (N.W.20kg or 25kg)