Description

C.I. Acid Violet 74 is a synthetic organic dye belonging to the acid dye class, valued for its vibrant violet hue and strong affinity for protein-based fibers. Its primary commercial importance lies in providing excellent color fastness and brightness in demanding textile applications. This dye is essential for manufacturers in the textile, leather, and specialty paper industries seeking reliable and consistent coloration.

Application

• Primary dyeing and printing of protein fibers such as wool, silk, and nylon.
• Coloration of leather goods, including footwear, apparel, and upholstery.
• Manufacturing of colored paper and paper products for specialty packaging and decorative purposes.
• As a colorant for inks used in various marking and printing applications.
• Dyeing of feathers and other natural protein materials.
• Potential use as a biological stain in laboratory and microscopy settings.

Basic Information

Product Name	C.I. Acid Violet 74
CAS No.	12220-55-2
Molecular Formula	C20H12N2Na2O8S2
Molecular Weight	534.42 g/mol
Synonyms	Acid Violet 74; C.I. 16255; Acid Fast Violet A2R; Acid Violet 5R; Acid Leather Violet 2R; Nylosan Violet F-2RL; Supranol Fast Violet A2R; Dermacid Violet 2R; Telon Fast Violet A2R
EINECS	235-406-4

Quality Control

Our C.I. Acid Violet 74 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against key parameters including color strength, shade, solubility, and impurity profile. A Certificate of Analysis (COA) detailing these results is provided with every shipment to guarantee compliance with your specifications.

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.

Specification

Item	Specification
Appearance	Dark Violet Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to Standard
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm

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