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| Direct Green B |
| Alias：Direct Dark Green BN |
| Color index：C.I. Direct Green 6 (30295) |
| English name：Direct Green B；Direct Dark Green BN（CNC）；Mitsui Direct Green BC（MDW）；Shangdirect Green B（SHD）. |
Structural formula： |
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Process flows ： |
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| Characters：Deep grey powder and soluble in water to become deep green, and slightly soluble in alcohol and insoluble in other organic solvent. Purple black when meeting sulphuric acid. |
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| Quality standard |
Index name |
Index |
Apperance strength，separated coloured light Color fastness in wool wool fabrics， impurity content insoluble in water，% moisture content，% fineness（80 meshes residual content），%
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深灰色均匀粉末 100±3 of standard products similar to standard products accord to standard products ≤1 ≤7 ≤5
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| Use：Mainly used in cotton, hemp and other fabric dyeing, and used in paper slurry, soap, leather and other coloring. |
| 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 |
1～2 |
3 |
1～2 |
4 |
1～2 |
4 |
1～2 |
4 |
3～4 |
2～3 |
1 |
4～5 |
1 |
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