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Direct Black RN |
Alias:Direct Black RN; Direct Black EX(CNC) |
Color index:C.I. Direct Black 38 (30235) |
English name:Direct Black RN; Direct Black EX(CNC);Mitsui Direct Black EX,GX(MDW);Shangdirect Black EBN(SHD) |
Structural formula: |
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Process flows : |
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Characters:Brown black powder and soluble in water to become black with green light. Soluble in alcohol and insoluble in organic solvent. |
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Quality standard |
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 black equal powder 100±3 of standard products similar to standard products accord to standard products ≤0.8 ≤8 ≤5
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Use:Mainly used in cotton, hemp and other fabric dyeing, and used in silk, leather, biology, wood and plastic 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 |
3 |
3 |
1~2 |
3~4 |
1~2 |
3~4 |
2~3 |
3~4 |
3 |
1~2 |
3~4 |
4 |
3~4 |
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