China factory low price high quality textile Optical Brightener ER-330 PS-1 C.I 199 CAS NO 13001-39-3

Appearance: Light yellow dispersion

Ionicity: Non-ionic

Shade: Violet

Solubility: Dispersible in water

pH(1% aq.sol.) :5.0-7.0

Active 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.