Import Auramine Dye — Buy in Bulk from Supplier in India

Auramine is a basic cationic dye of the diphenylmethane class, designated as CI 41000 (Colour Index) and CAS 2465-27-2 for the O-form. Nitin Dye Chem Pvt. Ltd. processes this dye at their Mumbai facility in Maharashtra, supplying it as a golden-yellow powder with marked affinity for acrylic fibres, silk, and leather. The dye exhibits a characteristic absorption maximum near 434 nm in aqueous solution and requires acidic dyebath conditions for proper exhaustion onto substrate.

The dye base is typically synthesised through condensation of 4,4'-bis(dimethylamino)benzophenone (Michler's ketone) with ammonium chloride or urea in presence of a dehydrating agent, yielding the auramine hydrochloride salt. Standard commercial grades range from 80% to 85% dye content, with balance comprising moisture, sodium chloride, or dispersing agents as per batch formulation. The product is hygroscopic and light-sensitive in powder form, necessitating opaque, sealed containers for storage. Typical moisture content in commercial material falls between 5% and 8% by weight.

Textile dyers, leather tanners, and paper colour formulators constitute the primary buyer segments for this material. Auramine is also employed in analytical microbiology for acid-fast staining (Ziehl-Neelsen protocol variants) and in certain ink formulations. Importers should note that the free base form of auramine is classified as IARC Group 2B, and industrial handling requires appropriate personal protective equipment and ventilation. Bulk shipments from Mumbai typically move via Nhava Sheva or Mundra port.

Nitin Dye Chem Pvt. Ltd. operates from 9 Nirmal Ind Estate on 29th Road in Mumbai, Maharashtra, India (postal code 400022). The supplier is positioned within the Harbour trust tier on the platform, with a recorded response rate of 0.00% and no logged average response hours. This profile indicates limited or no engagement with buyer enquiries through the platform channel, so direct contact via the listed Mumbai address may prove more reliable for procurement discussions.

The company's source description states engagement in manufacturing and offering basic dyes, with processing by in-house professionals using chemical compounds and what they describe as advanced techniques aligned to industry standards. The listing mentions availability in multiple packaging options. No specific certifications, export volumes, or client references are provided in the available data. Buyers should independently verify manufacturing capacity, quality control documentation, and any claimed compliance with industry standards before committing to volume orders.