PROPERTY Fluorescent brightener33# is a typical representative of
bis(triazinylamino)stilbene derivative. It can be soluble in 80
times soft water and shows anion character and the PH value
resistant to acid and alkali is 6-11 and the expected PH value of
dyeing bath is 8-9. When used in acidic solution, the fluorescence
will weaken owing to the increase of acid and turns into yellow
color. It can resist 300ppm hard water ,0.25% free chlorine, but
don’t resist the ion of copper and iron. It shows stablity to
rongalite,but cannot be baked at high temperature. It has bluish
violet optical color and can be used in the one bath with anionic
surfactant or dyestuf and nonionic surfactants and oxydol,
unsuitalbe for application in cationin dyestuff and surfactant and
raw synthetic resin.
APPLICATION 1.Fluorescent whitening agent for cotton fabric and gluing
products,light color or printing products. It show normal sun light
resistance and has good affinity with cellulose fiber,normal level
dying result. It can be used in exhausting or padding dyeing and
printing pulps. 2. Fluorescent whitening agent for polyvinyl
alcoholic fiber and polyamide fiber. 3. Fluoresent whitening agent
for paper-making industry, paper pulp or paints.
PROCEDUR 1.when used in dyeing industry, added directly into the dyeing
bath, solved with water then can be in use. The dosage is
0.08-0.3%, bath ratio is :1:40, and the ideal bath temperature:60℃.
2.when used in paper-making industry,dissolved with 80 times water
and added into paper pulp or paints. The dosage is 0.1-0.3% of the
dry pulp or paints
PACKAG Packed in cardboard bucket or plastic coating paper sack after
being packed in plastic bag either 25kg or 50kg per bucket or sack.
TRANSPORTATION Should be handled carefully, avoid sunlight and crash
STORAGE Should be stored in cool,dry and ventilate place, and storage time
should not exceed 2 years