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| Direct Red B |
| Alias：Direct Red |
| Color index：C.I. Direct Red 13(22155) |
| English name：Direct Bordeaux B；Atul Direct Fast Bordeaux B（AP）；Shangdirect Garnet GB（SHD）. |
Structural formula： |
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Process flows ： |
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| Characters：red brown equal powder and soluble in water to become red brown solution, and slightly soluble in alcohol . |
| Quality standard |
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Index name |
Index |
Apperance coloured light strength， Color fastness in wool wool fabrics， moisture content，% impurity content insoluble in water，% fineness（60 meshes residue content），%
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red brown equal powder similar to standard products 100±3 of standard products accord to standard products ≤5 ≤2 ≤5
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| Use：Mainly used in cotton and other fabrics dyeing, and still used in silk, cotton fabric dyeing and paper slurry dyeing. |
| Application performance：Colour fastness(grade) in cotton fabrics： |
Solarization |
Soaping |
Water leaching |
Perspiration |
Ironing |
Friction |
Acid and alkali resistance |
fading |
staining |
fading |
staining |
fading |
staining |
dry |
wet |
sulphuric acid |
acetic acid |
sodium carbonate |
2 |
2～3 |
2 |
3～4 |
2 |
2～3 |
3 |
3～4 |
4～5 |
2～3 |
1 |
2～3 |
3 |
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