Assay：≥98.0%
Shade：Similar to standard sample
Loss on Drying：≤1.0%
Insoluble matter in water：≤0.5%
Ash Content：≤0.3%
Heavy Metals：≤10ppm
pH (1% solution)：4.0～6.0
Identification：Conforms to standard
Dye industry: Cationic basic dye, used for dyeing and printing of acrylic fiber, rayon, paper and leather with bright color and high tinting strength. Ink & coating: Applied in high-grade printing ink, ballpoint pen ink, water-based paint and wood coloring agent. Biological staining: Histological section, bacteria and microbial staining reagent for microscopic analysis. Analytical reagent: Used as acid-base indicator and redox color agent for chemical analysis and water quality testing. Daily chemicals: Coloring additive for shoe polish, carbon paper, toner and stationery. 
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