Description

Acid Blue 1 CAS NO 129-17-9 is a synthetic, water-soluble triarylmethane dye belonging to the acid dye class, valued for its brilliant blue color and strong affinity for protein-based fibers. Its primary commercial significance lies in providing vibrant, wash-fast coloration to textiles like wool, silk, and nylon, as well as in specialized staining applications. This product is essential for manufacturers in the textile dyeing, leather finishing, biological staining, and ink formulation industries seeking reliable and consistent colorants.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and polyamide (nylon) fibers to achieve bright blue shades with good wash fastness.
• Leather Coloring: Used in the finishing process to impart a uniform and vibrant blue color to leather goods.
• Biological Staining: Employed as a histological stain in microscopy for contrast enhancement in tissue samples.
• Ink Manufacturing: A key colorant component in the production of writing inks, stamp pad inks, and other specialty inks.
• Paper Coloring: Applied for surface coloring or tinting of specialty papers and paper products.
• Food Contact Material Dyeing: Used for coloring packaging materials where direct food contact is not intended.
• Educational & Laboratory Use: Serves as a demonstration dye in chemical and educational experiments.

Basic Information

Product Name	Acid Blue 1
CAS No.	129-17-9
Molecular Formula	C₂₇H₃₁N₂NaO₆S₂
Molecular Weight	566.67 g/mol
Synonyms	Acid Blue 1; Patent Blue VF; Alphazurine FG; C.I. 42045; Erioglaucine A; Acid Blue 1, sodium salt; Aniline Blue, water soluble; [4-[[4-(Dimethylamino)phenyl][4-(ethylamino)-1-naphthalenyl]methylene]-2,5-cyclohexadien-1-ylidene]dimethylammonium hydrogen sulfate, sodium salt
EINECS	204-934-1

Quality Control

Our Acid Blue 1 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against established specifications for color strength, purity, solubility, and shade. A comprehensive Certificate of Analysis (COA) detailing the results of these tests, including identification by FT-IR and assay by titration, is provided with every shipment to guarantee compliance with your 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 strong oxidizing agents. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Dark blue to blue-violet powder
Identification (IR)	Conforms to standard
Color Strength	≥ 95% (vs. Standard)
Assay	≥ 85% (by Titration)
Water Solubility	Clear, complete solution
Moisture Content	≤ 5.0% (Karl Fischer)
Ash Content (Sulfated)	≤ 30.0%
pH (1% Solution)	6.0 - 8.0

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