Description

C.I.Acid Blue 127:1 is a high-performance, metal-complex acid dye renowned for its excellent color fastness properties. This dye is specifically engineered to deliver vibrant and durable blue shades on protein-based fibers like wool, silk, and nylon. It is an essential component for manufacturers in the textile and leather industries seeking reliable and wash-fast coloration. Our supply of CAS 12238-73-2 is backed by stringent quality control to ensure batch-to-batch consistency for your production needs.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and polyamide (nylon) fibers to achieve deep, fast blue shades.
• Leather Finishing: Used in the dyeing of leather goods, providing good penetration and color uniformity.
• Paper Coloration: Suitable for specialty paper products requiring acid-fast dyes.
• Ink Formulation: A colorant component in certain types of inks where acid dye properties are required.
• Biomedical Staining: Potential use as a biological stain in laboratory settings due to its affinity for proteinaceous materials.

Basic Information

Product Name	C.I.Acid Blue 127:1
CAS No.	12238-73-2
Molecular Formula	C32H14CrN4Na4O16S4
Molecular Weight	1009.73 g/mol
Synonyms	Acid Blue 127:1; Acid Blue 127:1 Chromium Complex; C.I. 61110; Acid Leather Blue G; Acid Blue G; Chromium complex of 5-[(4,8-disulfo-2-naphthyl)azo]-8-hydroxyquinoline; Wool Blue G; Nylosan Blue N-GL; Telon Blue GGL
EINECS	235-453-5

Quality Control

Our C.I.Acid Blue 127:1 is manufactured under a strict quality management system. Every batch is tested to ensure it meets critical parameters for shade, strength, and solubility. We provide comprehensive Certificates of Analysis (COA) upon request, detailing purity, metal content, and other relevant specifications 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.

Specification

Item	Specification
Appearance	Dark Blue Powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
pH (1% Solution)	4.0 - 7.0
Chromium Content	As per COA
Fastness Properties	Wash Fastness: ≥ 4; Light Fastness: ≥ 5

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