Description

C.I. Pigment Yellow 1:1 is a high-performance, monoazo-based organic pigment widely recognized for its clean, greenish-yellow hue and excellent color strength. This product, identified by CAS NO 12240-03-8, is valued for its good lightfastness and solvent resistance, making it a reliable choice for demanding coloration applications. It is primarily needed by manufacturers in the coatings, plastics, and printing ink industries seeking durable and vibrant yellow pigments.

Application

• Industrial and decorative coatings, including automotive finishes and architectural paints.
• Coloration of various plastics and synthetic resins, such as PVC, polyolefins, and engineering plastics.
• Manufacturing of printing inks for packaging, publications, and textiles.
• Pigmentation of masterbatches and color concentrates.
• Coloring synthetic fibers and spin-dyeing applications.
• Specialty applications in artists' colors and leather finishes.

Basic Information

Product Name	C.I. Pigment Yellow 1:1
CAS No.	12240-03-8
Molecular Formula	C34H30Cl2N6O4
Molecular Weight	673.55 g/mol
Synonyms	Pigment Yellow 1:1; C.I. 11680; Benzidine Yellow G; Permanent Yellow G; Hansa Yellow G; Diarylide Yellow AAA; Azo Yellow 1:1; 3,3'-Dichlorobenzidine-4,4'-Diacetamide; 4,4'-[(3,3'-Dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[N-(2-methylphenyl)-3-oxobutanamide]
EINECS	235-492-5

Quality Control

Our C.I. Pigment Yellow 1:1 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. The product is tested against key parameters including color strength, hue, particle size distribution, and chemical purity. Certificates of Analysis (COA) documenting these results are available for every shipment 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 incompatible materials and sources of ignition. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain optimal color properties.

Specification

Item	Specification
Appearance	Yellow Powder
Color Strength	95 - 105% (vs. Standard)
Hue	Standard
Lightfastness	≥ 6 (ISO 105-B02)
Heat Resistance	≥ 180°C
Oil Absorption	40 - 60 g/100g
Particle Size (D50)	0.2 - 0.5 µm
Moisture Content	≤ 2.0%
Ash Content	≤ 1.0%
Water-soluble Matter	≤ 1.5%

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