Import Auramine O — Buy in Bulk from Supplier in India

Auramine O (CI 41000, CAS 2465-27-2) is the hydrochloride salt of a diphenylmethane basic dye, supplied by Krishna Impex from their base in Thane, Maharashtra. The material presents as an intense yellow powder with high tinctorial strength on acrylic, silk, and modified polypropylene substrates. In aqueous solution it produces a clear golden-yellow shade with absorption maximum around 434 nm, and remains stable across a broad pH interval from strongly acidic to mildly alkaline conditions in the dyebath.

Krishna Impex offers an industrial-grade formulation with what the supplier describes as excellent water solubility and consistent batch performance. The dye molecule carries two dimethylamino substituents on a diphenylmethane backbone, rendering it strongly cationic and thus substantive to fibres with anionic sites. Standard commercial material typically carries 80% to 85% active dye content, with balance as moisture, sodium chloride, or proprietary dispersants. The product is not lightfast on cellulosics and is generally reserved for substrates where brilliance outweighs fastness requirements.

Primary applications span textile piece dyeing and printing, paper stock colouring, and pigmentation of certain thermoplastics. In analytical laboratories, diluted Auramine O serves in fluorescent acid-fast staining for mycobacteria. Buyers targeting EU or North American markets should confirm whether Krishna Impex provides regulatory documentation on aromatic amine cleavage products and heavy metal limits, as the source data mentions ISO and SGS certifications but these should be verified directly with the supplier rather than assumed current.

Krishna Impex is located at B-10, Om Sai Industrial Estate on Bhayander East Phatak Road, Thane, Maharashtra, India (postal code 401105). The supplier holds a Harbour trust tier designation with an imported supplier tier classification, indicating they may operate as a trader or distributor rather than sole manufacturer. Their response rate is recorded at 0.00% with zero average response hours, suggesting limited platform-mediated communication. Direct outreach to their Thane address is advisable for substantive technical and commercial discussions.

The source description positions Auramine O as suitable for textile, paper, and plastic industries with emphasis on tinctorial strength and water solubility. The profile references ISO and SGS certifications and mentions FOB and CIF shipping terms, though no specific certificates, audit dates, or executed shipment records are displayed. The company does not state manufacturing capacity, number of employees, revenue, or years in operation in the available data. Buyers should request current certification copies, supplier audit reports, and reference shipments before finalising contractual terms.