Description

Amido Black 10B is a synthetic, acid-based diazo dye widely recognized for its deep, intense black color and strong substantivity to proteinaceous materials. This high-performance dye is valued for its excellent lightfastness and wash fastness, providing durable coloration in demanding applications. It is an essential component for manufacturers in the textile, leather, and biological staining industries seeking reliable and consistent black dyeing agents. The compound is also known under the CAS registry number 28533-19-9.

Application

• Textile Dyeing: Primarily used for dyeing wool, silk, and nylon to achieve deep, fast black shades.
• Leather Finishing: Employed in the dyeing of leather goods, providing rich color and good penetration.
• Biological Staining: A key stain in protein detection assays, notably for staining protein bands on nitrocellulose or PVDF membranes in Western blotting.
• Ink Formulation: Used in the production of specialized inks for writing, printing, and marking where a strong black hue is required.
• Paper Coloring: Applied in the tinting of specialty papers and cardstocks.
• Historical and Artistic Uses: Sometimes utilized as a pigment in restoration work or artistic contexts due to its color stability.

Basic Information

Product Name	Amido Black 10B
CAS No.	28533-19-9
Molecular Formula	C22H14N6Na2O9S2
Molecular Weight	616.49 g/mol
Synonyms	Acid Black 1; Naphthol Blue Black; Buffalo Black NBR; Amido Schwarz 10B; C.I. 20470; Aniline Blue Black; Wool Black 6BN; Naphthalene Black 12B; Eriosin Blue Black B
EINECS	249-072-5

Quality Control

Our Amido Black 10B is manufactured under a stringent quality management system to ensure batch-to-batch consistency and high purity. Each lot is tested against rigorous in-house specifications, which typically include parameters for color strength, shade, solubility, and impurity profile. A Certificate of Analysis (COA) detailing the specific test results is provided with every shipment to guarantee compliance with your application requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. The product is light-sensitive and should be stored away from direct light exposure to maintain stability.

Specification

Item	Specification
Appearance	Dark blue-black to black powder
Identification (IR)	Conforms to standard
Assay (Dye Content)	Min. 85%
Moisture Content	Max. 5.0%
Water Solubility	Freely soluble
pH (1% Solution)	6.0 - 8.0
Ash Content	Max. 1.0%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.