Description

Pararosaniline CAS NO 479-73-2 is a synthetic organic compound belonging to the triarylmethane dye class, recognized for its vibrant magenta color and its role as a key chemical intermediate. Its primary value lies in its function as a precursor for the synthesis of other dyes and as a critical staining agent in biological and histological applications. This product is essential for manufacturers and research laboratories in the dye, pigment, and life science sectors, where precise color properties and chemical reactivity are paramount.

Application

• Dye and Pigment Manufacturing: Serves as a fundamental intermediate for producing a range of magenta and violet triarylmethane dyes used in inks, textiles, and specialty coatings.
• Biological Staining (Schiff Reagent): A key component in the preparation of Schiff's reagent, used for the detection of aldehydes and for staining polysaccharides (PAS staining) in histology and pathology.
• Analytical Chemistry: Utilized as a colorimetric reagent and indicator in various analytical methods for the detection of specific ions or compounds.
• Research & Development: Employed in chemical synthesis and material science research as a building block for novel chromophores and functional materials.
• Photographic Industry: Historically used in color photography and light-sensitive materials.

Basic Information

Product Name	Pararosaniline
CAS No.	479-73-2
Molecular Formula	C19H17N3·HCl
Molecular Weight	323.82 g/mol (as free base)
Synonyms	Basic Fuchsin; Magenta 0; Pararosaniline Chloride; Pararosaniline Hydrochloride; CI 42500; CI Basic Violet 14; 4-[(4-Aminophenyl)(4-imino-2,5-cyclohexadien-1-ylidene)methyl]benzenamine hydrochloride; Fuchsin, basic
EINECS	207-547-3

Quality Control

Our Pararosaniline is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including identification, assay, and impurity profiling. A Certificate of Analysis (COA) detailing all test results 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 incompatible materials and sources of ignition.

Specification

Item	Specification
Appearance	Dark green crystalline powder with metallic luster
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Solubility	Soluble in water and ethanol
Heavy Metals	≤ 20 ppm

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