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| Acid Nigrosine |
| Alias：Acid NigrosineNBL；Lurazol Deep Blue EB（BASF）；Nigrosine G（ICI）；Nigrosine MS（CNC）；Nigrosine NB（NSK）；Nigrosine %B（HDC）；Nigrosine W（BAY）；Nigrosine WLF（BAY）；Nigrosine WSB（CKC） |
| Color index：C.I. Acid Black 2 (50420) |
| English name：Nigrosine；Atlantic Nigrosine（ATL）；Lurazol Deep Blue EB（BASF）；Nigrosine G（ICI）；Nigrosine MS（CNC）；Nigrosine NB（NSK）；Nigrosine %B（HDC）；Nigrosine W（BAY）；Nigrosine WLF（BAY）；Nigrosine WSB（CKC） |
Structural formula： |
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Process flows ： |
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| Characters：black grain with glazing and soluble in water and alcohol. |
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| Quality standard DB/3700 G57001—86 |
Index name |
Index |
Apperance coloured light strength， moisture content，% ash content，%
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black grain with glazing similar to standard products 100±3 of standard products ≤6 ≤1.7
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| Use：mainly used in leather dyeing, and used in paper, wood, soap and others dyeing. |
| Application performance：Color fastness(grade) in wool fabrics： |
Solarization |
Sweat sinking |
Soaping |
Water leaching |
Fulling milling |
fading |
staining |
5 |
4 |
4 |
4 |
4 |
3 |
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