Description

Vat Orange 11 is a high-performance vat dye belonging to the anthraquinone chemical class, known for its excellent color fastness and stability. This compound is crucial for achieving durable and vibrant orange to reddish-orange hues on cellulosic fibers like cotton and viscose. It is primarily sought after by manufacturers in the textile industry for dyeing and printing applications where superior wash, light, and chlorine fastness are required. Its application extends to specialized areas requiring colorants with high chemical resistance.

Application

• Dyeing of cellulosic textiles, including cotton, linen, and viscose rayon.
• Printing on cotton and other natural fiber fabrics.
• Production of high-fastness workwear, upholstery, and automotive textiles.
• Coloration of paper and specialty papers where color stability is critical.
• Used in the formulation of pigment preparations for various industrial applications.
• Potential use in the coloring of leather and other natural materials.

Basic Information

Product Name	Vat Orange 11
CAS No.	2172-33-0
Molecular Formula	C28H12N2O4
Molecular Weight	440.41 g/mol
Synonyms	Vat Orange R; C.I. 70805; C.I. Vat Orange 11; 8,16-Pyranthrenedione, 5,6,12,13-tetrachloro-3,10-dihydro-; Tetrachloropyranthrone; Pyranthrone Orange; Vat Orange RR; Vat Orange 2R
EINECS	218-529-7

Quality Control

Our Vat Orange 11 is produced under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is tested against key parameters including shade, strength, particle size distribution, and fastness properties. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and application performance is provided with every shipment to guarantee it meets your specific technical 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 heat sources and incompatible materials. The product is light-sensitive and should be stored away from direct light exposure to maintain its coloristic properties.

Specification

Item	Specification
Appearance	Orange to Reddish-Orange Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to Standard
Moisture Content	≤ 5.0%
Particle Size	Contact for details
Fastness to Washing	≥ 4-5 (ISO 105-C03)
Fastness to Light	≥ 6 (ISO 105-B02)

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