Batch NO.:MV6B260605 Dye Content(Spectrophotometry):98.26% Loss on Drying:0.25% Residue on Ignition:0.09% Heavy Metal(Pb):<10ppm Arsenic:<2ppm Single Unknown Impurity:≤0.19% Total Related Impurity:≤0.45% Residual Organic Solvent:Meet ICH Q3C regulated limitation values

Methyl Violet 6B is a classic cationic triarylmethane dyestuff mainly used for biological analytical experiment, industrial coloring and laboratory chemical testing rather than food or oral medicinal raw material. In pathological and microbiology labs, it is widely adopted as core staining agent for gram staining of bacteria and paraffin tissue slice staining, helping researchers observe cellular and microbial morphology under optical microscope. It serves as universal pH indicator whose color transition covers acidic to neutral range for chemical titration and regular environmental water quality pH detection. In industrial production, the product dyes acrylic fiber, wool, leather and paper products, meanwhile acting as colorant for fountain pen ink, printing ink and stationery pigment manufacture. High-purity reference grade is used for spectrophotometer calibration and dyestuff qualitative identification during raw material incoming inspection inside third-party testing institutions. Moreover, it works as chromogenic reagent for trace transition metal ion qualitative screening in wastewater component analysis experiments for environmental monitoring projects.

This dyestuff is rated GHS Warning hazard with H302 harmful by ingestion, H315 skin irritation, H318 serious eye damage and H335 respiratory irritation from inhaled fine dust. Laboratory operators must wear nitrile resistant gloves, full-face splash-proof safety goggles and dust-resistant lab coat during powder weighing and liquid preparation to avoid skin contact and dust inhalation. After accidental skin or eye exposure, continuously rinse contaminated parts with abundant running clean water for over 15 minutes and seek prompt medical help if persistent inflammation exists. Unintended large oral intake may induce stomach pain, nausea and digestive discomfort; immediate hospital treatment is essential for severe poisoning cases. All leftover solid waste and dye-containing waste liquid are classified as hazardous organic waste, which shall be transferred to licensed professional disposal institutes per local environmental laws instead of random household waste dumping. Store separately from strong oxidants and corrosive acid-base chemicals to prevent decomposition and generation of toxic fumes under incompatible storage conditions.