Properties:Bright-black flake or grain, insoluble in water and alcohol. It is the green-black colour when it soluble in solution of sodium sulfide.
Qulity standard:
Appearance: |
Bright-black flake or grain |
Shade: |
no difference as the standard¡«micro |
Strength, score: |
100 as the standard product |
Moistness, %: |
≤6 |
Insoluble matters in the solution of sodium sulfide, %: |
≤0.3 |
Fastness of dyes on cotton fabrics:
Dyeing depth, % |
Res- |
Resistance washing with soap at 95°C |
Resistance perspiration |
Rubbing |
Ironing at 200°C |
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acid |
alkali |
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Change |
Stain on cotton |
Stain on wool |
Change |
Stain on cotton |
Stain on wool |
Change |
Stain on cotton |
Stain on wool |
Dry |
wet |
Change (after 4 hours) |
||
6 |
6 |
3-4 |
4 |
4-5 |
4 |
4-5 |
4-5 |
4 |
4-5 |
4-5 |
2-3 |
1-2 |
4 |
Note: 6% (owf) as shallow black dye depth standard.
Uses:Mainly used dyeing on cotton, also used dyeing on cambric, viscose and vinylon.
Starage and transportation:It must be store in drying and ventilation preventing from sunlight directly, moisture or hot. Must be careful with it and prevent from damaging the packing.
Packing:In iron drums of 25kg or 50kg net each lined with plastic bag.