Description

C.I.Acid Black 158 is a high-performance synthetic acid dye widely used in industrial coloration processes. Its primary value lies in providing deep, consistent black shades with excellent fastness properties, which are critical for product quality and durability. This product is essential for manufacturers in the textile, leather, and paper industries seeking reliable and vibrant coloration for their materials.

Application

• Textile Dyeing: Primary application for dyeing protein fibers like wool, silk, and nylon to achieve deep black shades.
• Leather Finishing: Used in the dyeing of leather goods, including footwear, apparel, and upholstery, for uniform and rich color.
• Paper Coloration: Employed in specialty paper production for colored papers requiring lightfastness.
• Ink Formulation: A component in the manufacture of certain inks for industrial marking and printing.
• Biomaterial Staining: Potential use in laboratory settings for staining biological specimens in microscopy.

Basic Information

Product Name	C.I.Acid Black 158
CAS No.	12234-55-8
Molecular Formula	C32H21N5Na2O8S2
Molecular Weight	697.64 g/mol
Synonyms	Acid Black 158; C.I. 20255; Acid Leather Black NB; Nylosan Black N-BL; Telon Black BGL; Erionyl Black BGL; Acid Black NB; Aminyl Black F-BL
EINECS	Contact for details

Quality Control

Our C.I.Acid Black 158 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against key parameters including color strength, shade, solubility, and fastness properties. Certificates of Analysis (COA) documenting these results are available upon request to support your quality assurance protocols.

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.

Specification

Item	Specification
Appearance	Black powder or granules
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Ash Content	≤ 1.0%
Fastness Properties (Typical)	Light: 5-6; Wash: 4-5; Perspiration: 4-5

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