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| Direct Pink |
| Alias：Direct Pink12B；Direct Pink 5B |
| Color index：C.I. Direct Red 31 (29100) |
| English name：Direct Pink；Aizen Direct Rhoduline Red BH（HCC）；Atlantic Direct Brilliant Red 12B（ATL）；Benzo Rhoduline Red B（BAY）；Diacotton Rhoduline Red B（MCI）；Direct Red 12B（CNC）；Kayaku Direct Rhoduline Red B（KYK）；Mitsui Direct Brilliant Red B（MDW）；Nippon Fast Red BB（NSK）；Pyrazol Pink 2B（S）；Shangdirect Red 12B（SHD）. |
Structural formula： |
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Process flows ： |
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| Characters：Red brown powder and soluble in water to become red solution, and slightly soluble in alcohol to become orange with red light. Insoluble in other organic solvents . |
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| Quality standard HG 2—307—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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red brown equal powder 100±3 of standard products similar to standard products accord to standard products ≤1 ≤4 ≤5
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| Use：mainly used in cotton and other fabrics dyeing, and get good leveling property and directly used in printing. |
| Application performance：Colour fastness(grade) in cotton fabrics： |
Solarization |
Soaping |
Water leaching |
Perspiration |
Friction |
Acid and alkali resistance |
fading |
staining |
fading |
staining |
fading |
staining |
dry |
wet |
sulphuric acid |
acetic acid |
sodium carbonate |
2 |
3 |
2 |
3 |
1 |
3～4 |
2 |
4 |
2 |
4 |
2 |
4 |
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