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| Direct Copper Blue 2R |
| Alias：Direct Copper Blue 2R；Atlantic Diazo Fast Blue MP（ATL） |
| Color index：C.I. Direct Blue 151 (24175) |
| English name：Direct Copper Blue 2R；Atlantic Diazo Fast Blue MP（ATL）；Benzo Copper Blue CVBS（BAY）；Pyrazol Blue FO（S）；Shangdirect Copper Blue 2R（SHD）. |
Structural formula： |
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Process flows ： |
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| Characters：Blue black powder and soluble in water to become blue violet solution, and soluble in alcohol to become violet. |
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| Quality standard GB 1649—82 |
Index name |
Index |
Apperance strength，separated coloured light Color fastness in wool wool fabrics，级 impurity content insoluble in water，% moisture content，% fineness（80 meshes residual content），%
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蓝black equal powder 100±3 of standard products similar to standard products accord to standard products ≤1 ≤5 ≤5
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| Use：Mainly used in cotton, hemp and other fabrics dyeing, and used in leather and paper slurry dyeing. |
| Application performance：Colour fastness(grade) in cotton fabrics： |
Dyeing depth% |
sun-proof |
Water leaching |
Soaping65℃ |
Perspiration |
Ironing
fading |
Friction |
sulphuric acid resistance |
acetic acid resistance |
sodium carbonate resistance |
fading |
staining |
fading |
staining |
fading |
staining |
dry |
wet |
0.5 1.5 3 |
4 5 5～6 |
4 4 4 |
3～4 3 2～3 |
1 1 1 |
1 1 1 |
3～4 4 4 |
4 3～4 3～4 |
3 3 3 |
4 3 3 |
2 2 1～2 |
2～3 2～3 3 |
4 4 4 |
2～3 3～4 3～4 |
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