| Product |
4BK |
| CAS |
27344-41-8 |
| Fomula |
C28H20S2O6Na2 |
| Mainly Chemical Composition |
Stilbene bistriazine derivative |
| Appearance |
Slight yellow uniform powder. Fluorescent color is slight bluish. Water: <5% Fineness (120 mesh residue): ≤5% |
| Application |
Mainly be used in whitening of cotton fabric and polyester/cotton blends. T/C whitening in one bath. |
| Property |
1. With strong fluorescence, excellent whitening performance and slight bluish shade.
2. With high light stability and chemical stability.
3. Good acid stability, stable in perborate and hydrogen peroxide. |
| Treating Process |
Exhaust process:0.1-0.8%(o.w.f.), bath ratio: 1:10-30Temperature 90-100℃*30-40min→wash→dry.The processing can be adjusted according to the actual situation. |
| One bath process of Scouring hydrogen peroxide bleaching and whitening: |
| Dosage: |
hydrogen peroxide: |
| 0.2-0.8%(o.w.f.) |
5-15/L |
| Stabilizer: 1-5g/L |
NaOH: 2-4g/L |
| Scouring agent: 0.5-1g/L |
bath ratio: 1:10-30 |
| Temperature |
90-100℃*30-40min→wash→dry. |
| The processing can be adjusted according to the actual situation. |
| Package |
25kg per cardboard drum |
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