Acid Red 337

Acid Red 337 (CAS 67786-14-5) is an acid dye manufactured in India by Krishna Impex, supplied as a concentrated red powder at 50% strength for bulk industrial use. The dye exhibits strong solubility in aqueous systems and is formulated to deliver vivid, lightfast red coloration across multiple substrate types. Its chemical architecture supports both exhaustion and padding application methods common in textile processing.

The 50% concentration specification indicates a standardized commercial strength typical of bulk acid dye supply, allowing direct metering into dyebaths without intermediate dilution. Acid Red 337 belongs to the monoazo and related acid dye chemical class, with molecular features that promote affinity for protein and polyamide fibres through ionic bonding. Standard quality verification for this dye category includes strength determination (spectrophotometric), solubility testing at 90-95°C, and fastness assessments to washing, light, and perspiration (ISO 105 series).

Primary buyers span textile wet processing mills (wool, silk, nylon), leather tanneries, and specialist plastics compounders requiring saturated red coloration. The dye also serves coatings formulators where solvent compatibility and thermal stability are critical. Krishna Impex lists this material for export with FOB and CIF shipping options; buyers should confirm current MOQ, exact packaging format, and certificate availability directly with the supplier given the zero response rate recorded.

Krishna Impex operates from B-10, Om Sai Industrial Estate on Bhayander East Phatak Road in Thane, Maharashtra, India (PIN 401105). The business is classified as an imported-tier supplier within the harbor trust tier, indicating intermediary or trading-house status rather than direct manufacture. No response data is available, with a recorded 0.00% response rate and zero average response hours, so buyers should anticipate potential delays in communication and plan procurement timelines accordingly.

The supplier profile does not disclose manufacturing capabilities, workforce size, revenue figures, or named clients. What the listing does state is export orientation, flexible MOQ positioning, and FOB/CIF term availability. What it does not state is equally important: no verified factory audit data, no disclosed R&D or quality control infrastructure, and no specific regulatory registrations beyond the claimed ISO and SGS certifications. Buyers should conduct independent verification of supplier credentials, request sample batches for laboratory shade matching, and establish quality acceptance protocols before committing to bulk orders.