Description

Vat Yellow 46 is a high-performance vat dye belonging to the anthraquinone chemical class, identified by CAS No. 12237-50-2. This pigment is valued for its exceptional color fastness properties, including excellent resistance to light, washing, and chlorine, making it a durable and reliable coloring agent. It is primarily sought after by manufacturers in the textile industry for dyeing and printing natural fibers like cotton, as well as by producers of high-grade artists' pigments and specialty inks where long-term color stability is paramount.

Application

• Textile Dyeing: Primary application for dyeing cotton, linen, and other cellulosic fibers to achieve brilliant, wash-fast yellow shades.
• Textile Printing: Used in printing pastes for fabrics requiring high color fastness to light and washing.
• Artist Quality Pigments: Formulated into high-stability paints and pastels for fine arts due to its excellent lightfastness.
• Specialty Inks: Employed in the manufacture of inks for security printing, packaging, and other applications demanding fade resistance.
• Leather Coloring: Used for dyeing leather goods where color durability is essential.
• Plastics and Masterbatch: Suitable for coloring certain polymers where high-temperature processing and light stability are required.

Basic Information

Product Name	Vat Yellow 46
CAS No.	12237-50-2
Molecular Formula	C28H12N2O4
Molecular Weight	440.41 g/mol
Synonyms	C.I. Vat Yellow 46; C.I. 70600; Vat Yellow G; 8,16-Pyranthrenedione, 5,10-dihydro-5,10-dioxo-; Pyranthrone Quinone; Anthra[9,1,2-cde]benzo[rst]phenanthro[10,1,2,3-opqra]perylene-5,10,17,22-tetrone; Vat Yellow 46 (C.I. 70600); Pyranthrone Yellow
EINECS	235-439-6

Quality Control

Our Vat Yellow 46 is manufactured under a stringent quality management system. Every batch is tested to ensure it meets precise specifications for shade, strength, and chemical purity. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as color value, particle size distribution, and impurity profile to guarantee batch-to-batch consistency and performance reliability for your applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Yellow to Orange Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 3% (vs. Standard)
Shade	Within agreed tolerance
Purity (HPLC)	≥ 96.0%
Moisture Content	≤ 2.0%
Ash Content	≤ 1.0%
Particle Size (≤ 5μm)	≥ 85%
Light Fastness (ISO 105-B02)	7-8 (on wool)
Washing Fastness (ISO 105-C03)	4-5

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