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Hengshui Bohai Chemical Technology Co., Ltd
Sulphur Dark Blue 3R 100% 130% for cotton and leather C.I. Sulphur Blue 5
Product Name: Sulphur Dark Blue 3R; Sulphur Blue 3R.;C.I.Sulphur Blue 5
Standard: HG/T 4042-2008
Molecular formula:
Sulfides of the following intermediates:
Specification:
| Product name | sulphur dark blue 3R 100%, 130% |
| Appearance | Dark blue gray powder |
| Strength | 100% compared to standard |
| Moisture content | Max 5% |
| Insoluble substance in sodium sulfide | Max 2% |
| Fineness (through 180 μ M sieve residue content) | ≤5.0% |
| Shade | Approximate to standard |
Fastness on Cotton fabric:
| Fastness | Grade |
| Light fastness(Xenon Arc, 3.5%owf) | 5 |
| Washing fastness (95°C) | 3(fading); 3(cotton staining); 3~4(viscose staining) |
| Perspiration fastness(acid) | 4(fading); 4~5(cotton staining); 4~5(wool staining) |
| Perspiration fastness(alkaline) | 4(fading); 4~5(cotton staining); 4~5(wool staining) |
| Water fastness | 3~4(fading); 4~5(cotton staining); 4~5(wool staining) |
| Rubbing fastness | 4(dry); 2(wet) |
| Iron fastness(200°C after 4h fading) | 4 |
Application:
