Description

Stilbene Yellow CAS NO 1325-37-7 is a synthetic organic pigment belonging to the stilbene chemical class, valued for its bright, clean yellow hue and strong tinting strength. This high-performance colorant is engineered for excellent lightfastness and chemical stability, making it a reliable choice for demanding industrial applications. It is primarily sought after by manufacturers in the coatings, plastics, and printing ink industries seeking consistent and durable coloration.

Application

• As a pigment for industrial and decorative paints and coatings, providing weather-resistant yellow coloration.
• In the coloration of plastics and synthetic resins, including PVC, polyolefins, and engineering plastics.
• For manufacturing printing inks, particularly for packaging and publications requiring high color intensity.
• As a colorant in the production of masterbatches and concentrated pigment preparations.
• In the textile industry for dyeing and printing synthetic fibers.
• For specialty applications in colored pencils, artists' colors, and other stationery products.

Basic Information

Product Name	Stilbene Yellow
CAS No.	1325-37-7
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Pigment Yellow 99; C.I. 11767; Stilbene Yellow 2G; Stilbene Yellow G; 2,2'-[(3,3'-Dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[N-(2,4-dimethylphenyl)-3-oxobutyramide]; Benzenebutanamide, 4,4'-(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)bis[2,4-dimethyl-N-(3-oxobutyl)-]; C.I. Pigment Yellow 99
EINECS	Contact for details

Quality Control

Our Stilbene Yellow is produced under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is tested for critical parameters including color strength, hue, particle size distribution, and chemical purity. Certificates of Analysis (COA) documenting these results are available upon request 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 strong oxidizing agents. The container must be kept tightly closed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Yellow Powder
Color Strength	95 - 105% (vs. Standard)
Hue	Within agreed tolerance
Purity	> 95%
Moisture Content	< 1.5%
Residue on Sieve (45μm)	< 1.0%
Lightfastness	≥ 6 (ISO 105-B02)
Heat Resistance	≥ 180°C

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