Description

Basic Brown 16 is a synthetic cationic dye belonging to the azo class, widely recognized for its affinity to proteinaceous and polyamide-based materials. Its primary value lies in providing a consistent and durable brown coloration, making it a critical component in industrial dyeing and staining processes. This product is essential for manufacturers in the textile, leather, and paper industries seeking reliable and efficient dyeing agents for their production lines.

Application

• Textile Dyeing: Primarily used for dyeing silk, wool, and polyamide (nylon) fibers to achieve a uniform brown shade.
• Leather Finishing: Applied in the staining and finishing of leather goods to impart rich, deep brown colors.
• Paper Coloring: Employed in the production of specialty papers, including decorative and packaging materials.
• Wood Staining: Used as a colorant in stains for wood and bamboo products.
• Ink Formulation: Serves as a pigment in the manufacture of inks for various printing applications.
• Biological Staining: Finds application in histological and microbiological laboratories as a staining agent for tissue samples.

Basic Information

Product Name	Basic Brown 16
CAS No.	26381-41-9
Molecular Formula	C21H24N8·xCl
Molecular Weight	460.97 g/mol (Free base)
Synonyms	Aizen Cathilon Brown BRLH; Astrazon Brown BRL; Basic Brown BRL; C.I. 12250; C.I. Basic Brown 16; Calcozine Brown BRL; Diacryl Brown BRL-N; Duasyn Basic Brown BRL-HW; Maxilon Brown BRL; Methylene Brown; Paper Brown BRL; Sevron Brown BRL; Sumiacryl Brown BRL; Yoracryl Brown BRL
EINECS	247-668-7

Quality Control

Our Basic Brown 16 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Every lot is tested against established specifications for critical parameters including color strength, shade, solubility, and impurity profile. A Certificate of Analysis (COA) detailing these results is provided with each 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). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark brown to black powder or granules
Identification (IR)	Conforms to standard
Color Strength	≥ 98% (vs. Standard)
Shade	Conforms to standard
Moisture Content	≤ 5.0%
Water Solubility	Complete
Ash Content	≤ 1.0%
Particle Size (Typical)	Passes through 80 mesh

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