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| Direct Red RN |
| Alias：Direct Red R |
| Color index：C.I. Direct Red 28(22120) |
| English name：Direct Red Brown RN |
Structural formula： |
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Process flows ： |
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| Characters：brown powder and soluble in water. It get good stability for hard water. |
| Quality standard Tianjin /HG 2—2145—83 |
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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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brown equal powder 100±3 of standard products similar to standard products accord to standard products ≤1 ≤7 ≤5
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| Use：Used in cotton, wool and silk fabrics dyeing and printing, and used in leather dyeing. |
| Application performance：Colour fastness(grade) in cotton fabrics： |
Solarization |
Soaping |
Water leaching |
Perspiration |
Friction |
fading |
staining |
fading |
staining |
fading |
staining |
dry |
wet |
3 |
2～3 |
2～3 |
3 |
2～3 |
3 |
4 |
4～5 |
2～3 |
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