Offer Acid Nigrosine On Hot Sale
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Color Shade
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Product Name
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Content
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Dyeing Depth
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Fastness Properties(Change of Shade) |
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Light |
Washing |
Hot Pressing 180℃ |
Perspiration |
Rubbing (Dry) |
Rubbing (Wet) |
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Acid Nigrosine |
100% |
4.0 |
5 |
4 |
4-5 |
4 |
3-4 |
2-3 |
Synonyms: C.I. Acid Black 2; Nigrosine; C.I. 50420; Nigrosin water soluble; nigrosin cell culture tested; Nigrosin Acid black; Acid Black 5 (50420); Nigrosin; Nigrosine Water Soluble
Property of Acid Nigrosine:
Appearance: black shining crystal.
Maximum wavelength(λmax): 570nm
Soluble in water is blue purple.Soluble in ethanol is blue.The dye is blue in concentrated sulfuric acid.It will be purple when diluted and precipitated.The precipitate is dark purple when sodium hydroxide is added in water solution.
Application:It is mainly used for leather dyeing (generally by chrome mordant). It is also suitable for dyeing paper, wood, soap, electrochemized aluminum and wool and silk fabrics and also can be used for ink making.
Specifications:
| Item | Description |
| Name | Acid Nigrosine |
| Color Index No. | C.I.Acid Black 2 |
| Chemical Family | Acid dyes |
| Apearance | Black crystal with lustre |
| Shade | similar to standard |
| Tinting strength | 100+/-3 |
| Moisture | 6% max. |
| Ash | 1.7% max. |
| Insoluble matter | 0.5% max. |
Storage:store in a cool and ventilated room.
Quality guarantee period: 36 months.
Packing: 25kgs iron drum/paper carton.
