Description

Vat Red 31 is a high-performance vat dye belonging to the anthraquinone chemical class, known for its excellent color fastness properties. This compound is essential for achieving durable and vibrant red shades on cellulosic fibers like cotton. It is a critical raw material for manufacturers in the textile dyeing and printing industries who require superior wash, light, and chlorine fastness. The product is supplied as Vat Red 31 CAS NO 12227-47-3, ensuring precise identification and quality consistency for industrial applications.

Application

Vat Red 31 is primarily utilized in applications demanding high durability and color integrity. Its key uses include:

• Textile Dyeing: Exhaust and continuous dyeing of cotton, linen, and viscose to produce brilliant reds with outstanding fastness.
• Textile Printing: Used in pigment printing pastes for fabrics requiring high resistance to washing and light exposure.
• Industrial Fabric Coloring: For workwear, automotive textiles, and home furnishings (e.g., curtains, upholstery) where color longevity is paramount.
• Yarn Dyeing: Production of colored yarns for weaving and knitting applications.
• Leather Coloring: Imparting durable red shades to leather goods.
• Paper Staining: Used for specialty paper products requiring colorfastness.

Basic Information

Product Name	Vat Red 31
CAS No.	12227-47-3
Molecular Formula	C₂₆H₁₂Cl₂N₂O₄
Molecular Weight	487.29 g/mol
Synonyms	C.I. Vat Red 31; C.I. 73310; Vat Red 31; 8,16-Pyranthrenedione, 2,10-dichloro-6,14-dihydro-; Cibanone Red 3B; Indanthren Red FBB; Caledon Red X3B; Mikethrene Red FBB
EINECS	235-420-4

Quality Control

Our Vat Red 31 is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for shade, strength, and purity. We provide Certificates of Analysis (COA) with key parameters such as color value, particle size distribution, and fastness properties. Our quality commitment ensures batch-to-batch consistency and performance reliability for your production processes.

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. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Red Powder
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to Standard
Purity (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Ash Content	≤ 1.0%
Particle Size (Passing 80 mesh)	≥ 95%
Fastness to Washing	4-5 (ISO 105-C06)
Fastness to Light	6-7 (ISO 105-B02)

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