C.I. Solubilised Sulphur Blue 7(53441)
【Properties】
It is dark purple when soluble in dense sulphuric acid, and releases sulphur dioxyde, it produces precipitate after diluting; It is blue in sodium hydroxiole solution, It is dark blue in sodium sulfide solution.
【Qulity standard】
Q/141000LRB025-2005
| Appearance: | blue purple powder |
| Spectrometer strength, score (as compared to the standard): | 100±5 |
| Strength, score (as compared to the standard): | 100±3 |
| Shade (as the starndard): | no difference～micro |
| Insoluble matters in water, %: | ≤0.5 |
| Fineness (residue through the sieve of 250μm), %: | ≤5.0 |
| Solubility, g/L(60°C): | ≥50 |
| Loss of drying, %: | ≤7.0 |
| Fastness of dyes on cotton fabrics: |
Fastness of dyes on cotton fabrics:
| Dyeing depth, % | Res- istance Sunlight |
Resistance washing with soap at 95°C | Resistance water | Resistance perspiration | Rubbing | Ironing at 200°C | ||||||||||
| acid | alkali | |||||||||||||||
| Change | Stain on cotton | Stain on wool | 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) | ||
| 5 | 4 | 3 | 3-4 | 4 | 3-4 | 4-5 | 4-5 | 3-4 | 4-5 | 4-5 | 3-4 | 4-5 | 4-5 | 3 | 1-2 | 3-4 |
Note: 5% (owf) 1/1 dyeing depth standard. Used for assessment of leather products are not on the cotton fabric color fastness.
【Uses】
It is used for dyeing on cotton, jute, viscose and leather.
【Starage and transportation】
It must be stored in drying, cool and ventilation. Must be prevent from sharp bump to transport it. Avoid contact with fire, sunlight and rain.
【Packing】
In 25kg net each plastic weave lined with plastic bag.
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