Description

Vat Black 38 (CAS 12237-35-3) is a high-performance vat dye belonging to the anthraquinone chemical class, renowned for its exceptional color fastness and deep, rich black shade. Its primary value lies in delivering superior wash, light, and chlorine resistance, making it a critical component for durable and high-quality coloration. This pigment is essential for manufacturers in the textile and specialty coatings industries who require a reliable and consistent black dye for demanding applications.

Application

• Textile Dyeing and Printing: Primarily used for dyeing cellulosic fibers like cotton, linen, and viscose, producing deep black shades with outstanding fastness properties.
• Industrial Fabric Coloration: Ideal for workwear, military fabrics, automotive textiles, and other industrial materials where durability is paramount.
• Pigment Manufacturing: Serves as a key intermediate or finished pigment for producing high-quality black pigments used in paints, inks, and plastics.
• Leather Dyeing: Employed in the leather industry to achieve deep, fast black colors on various types of leather goods.
• Paper Coloration: Used for specialty paper products requiring a high degree of color permanence.

Basic Information

Product Name	Vat Black 38
CAS No.	12237-35-3
Molecular Formula	C₃₄H₁₆N₂O₆
Molecular Weight	548.50 g/mol
Synonyms	C.I. Vat Black 38; C.I. 65235; Vat Black NBK; Anthraquinone Black; Dibenzanthrone; 16,17-Dihydrodinaphtho[2,3-a:2',3'-i]naphtho[2'',3'':5,6]anthra[2,1,9-def]isoquinoline-8,18-dione
EINECS	235-457-8

Quality Control

Our Vat Black 38 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Quality is verified through comprehensive testing including purity assay, shade strength, and fastness property evaluation. A Certificate of Analysis (COA) detailing specific test results is provided with every shipment to guarantee compliance with agreed specifications.

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 and incompatible materials.

Specification

Item	Specification
Appearance	Black to dark blue-black powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Shade	Conforms to standard
Moisture Content	≤ 5.0%
Ash Content	≤ 1.0%
Particle Size	Contact for details
Fastness Properties	Contact for details

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