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HS Code |
851077 |
| Chemical Name | Acid Nigrosine Black 2 |
| Cas Number | 8005-03-6 |
| Molecular Formula | C22H16N6Na2O9S2 |
| Molecular Weight | 616.51 g/mol |
| Appearance | Dark brown to black powder |
| Solubility | Soluble in water and ethanol |
| Color Index Number | 50420 |
| Ph Value | 6.0–8.0 (1% solution) |
| Storage Conditions | Store in a cool, dry place |
| Application | Biological staining, textile dyeing |
| Synonyms | Nigrosine Acid Black, C.I. Acid Black 2 |
| Maximum Absorption Wavelength | approx. 570 nm |
As an accredited Acid Nigrosine Black 2 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Acid Nigrosine Black 2 is packaged in a tightly sealed 500g amber plastic bottle with clear labeling, hazard warnings, and batch details. |
| Shipping | Acid Nigrosine Black 2 is shipped in tightly sealed, chemical-resistant containers to prevent spills and exposure to moisture. Proper labeling for hazard identification is provided. Packages comply with local and international transport regulations, including safety data sheets. During transit, the chemical is handled with care to avoid contamination, damage, or leakage. |
| Storage | Acid Nigrosine Black 2 should be stored in a tightly sealed container in a cool, dry, and well-ventilated area away from direct sunlight and incompatible substances such as strong oxidizers. Ensure the storage location is protected from moisture and heat. Proper labeling is essential, and access should be limited to trained personnel. Follow all relevant safety and regulatory guidelines. |
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Purity 98%: Acid Nigrosine Black 2 with 98% purity is used in textile dyeing of cotton fabrics, where it ensures deep, uniform black coloration with excellent wash fastness. Molecular weight 666.77 g/mol: Acid Nigrosine Black 2 of molecular weight 666.77 g/mol is applied in the formulation of pen inks, where it delivers consistent viscosity and reliable flow properties. Particle size <10 µm: Acid Nigrosine Black 2 with particle size below 10 µm is utilized in aqueous staining solutions for microscopy, where it enhances resolution and contrast of biological samples. Water solubility 40 g/L: Acid Nigrosine Black 2 with water solubility of 40 g/L is used in leather dye baths, where it achieves rapid diffusion and penetration, resulting in even surface coloration. pH stability 2-6: Acid Nigrosine Black 2 stable between pH 2-6 is employed in laboratory protein staining, where it maintains color integrity under acidic conditions for accurate visualization. Melting point 300°C: Acid Nigrosine Black 2 with a melting point of 300°C is incorporated in high-temperature plastic coloration, where it provides thermal resistance and color retention during processing. Light fastness grade 5: Acid Nigrosine Black 2 with light fastness grade 5 is used in the production of black markers, where it ensures durability and resistance to fading under UV exposure. Viscosity 5 mPa.s (1% solution): Acid Nigrosine Black 2 at 5 mPa.s viscosity in 1% solution is included in industrial paper coatings, where it guarantees smooth application and uniform tone. Heat stability up to 180°C: Acid Nigrosine Black 2 stable up to 180°C is utilized in automotive upholstery dyeing, where it withstands heat setting processes without degradation or color shift. |
Competitive Acid Nigrosine Black 2 prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615651039172 or mail to sales9@bouling-chem.com.
We will respond to you as soon as possible.
Tel: +8615651039172
Email: sales9@bouling-chem.com
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