optical brightener ER-330

C.I.No.: 199 Main ingredient: Stilbene derivative Specification: AppearanceLight yellow dispersionIonicityNon-ionicShadeVioletSolubilityDispersible in waterpH(1% aq.sol.)5.0-7.0Active content≥20.0%Characteristics: High whiteness and fluorescence, excellent fastness to light, wash and sublimation. Application: For whitening and brightening of polyester and polyester-blended fabrics. Usage: Pad-dyeing hot-melt method Rate of use: 1-3g/L Process: two-bath two-pad(pick-up rate 70%)→pre-baking(100°C)→baking(180-200°C, 20-30s) High-temperature exhaust dyeing PS-1 rate of use: 0.2-0.3%(o.w.f); bath ration: 1:10-30; Process: 120-130°C, 30-60min→wash→parch→finalize. PH: 5-10(weak acid bath better) Packaging & Storage: Plastic barrel, n.w.25kg or 50kg. Shelf life: 6 months at room temperature.