OPTICAL BRIGHTENER 4BK
Main ingredients: stilbazine
UV absorption wavelength: 350 nm
SPECIFICATIONS:
Item |
Indices |
For textile |
|
Appearance |
Yellow-green or light green powder |
Brightening intensity (using standard products), points |
100±1 |
Water Content |
≤5.0% |
Water-insoluble impurities |
≤0.5% |
Fineness (residue through 425 μm sieve) |
≤5.0% |
PERFORMANCE AND CHARACTERISTICS:
High fluorescence, fast whiteness improvement, high yellowing point.
Alkali resistance such as perborate, hydrogen peroxide and other properties.
APPLICATION:
Optical brightener 4BK is suitable for whitening cotton, linen, silk, nylon and their blended fabrics.
INSTRUCTIONS: Whitening cloth
Dosage: 0.2-1 (o.w.f)
Bathing ratio: 1: 10-30
Dyeing temperature: 80-100℃
Holding time: 30-60 minutes
Oxygen whitening one bath
Dosage: 0.2-1 (o.w.f)
H2O2:10g/L
NaOH:1-3 g/L
Na2SiO3:2.5g/L Detergent: 1g/L
Bathing ratio: 1: 8-20
Dyeing temperature: 90-100℃
Holding time: 30-60 minutes
PACKAGE
25Kg or 50kg cardboard drum, can also be packed according to user requirements.
Storage
Can be stored for 12 months under cool and well ventilated condition.
Beware of being stressed for fear of agglomerating.