Acid Blue 9 in all grades

Acid Blue 9 from Oswal Udhyog is a triphenylmethane series dye with a Colour Index number of 42090, supplied as a dark blue powder. It meets a dye content of 65% with a tolerance of plus or minus 2%, and exhibits a UV absorption range of 0.406 to 0.440 at 630 nm for a 0.0004% w/v solution. The product demonstrates a solubility of at least 100 grams per litre, a loss on drying of up to 6% w/w at 105°C, and a pH range of 5.5 to 7.5 in a 2% w/v solution at 28°C. Water insoluble matter is capped at 0.2% max, and bulk density falls between 0.75 to 0.85 gm/cc. Packaging is provided in 25 kg HDPE drums or barrels.

This dye is part of a standard triphenylmethane group, which is widely used in textile and leather dyeing for its strong colour yield and stability. Typical applications include wool, silk, and nylon fibre dyeing, where it delivers consistent shading and penetration. The triphenylmethane structure ensures good lightfastness and resistance to washing, which are standard requirements in industrial dyeing processes. Acid Blue 9 is also known for its compatibility with other dyes in blend formulations, a common practice in the industry.

Acid Blue 9 is primarily sourced by textile manufacturers, leather processors, and ink producers who require reliable colour consistency in bulk quantities. Oswal Udhyog ships from Mumbai, Maharashtra, with logistics tailored for industrial buyers. Buyers typically confirm bulk density and solubility performance for their specific use cases, as these properties directly impact dye uptake and processing efficiency. The product is supplied in powder form for ease of handling and dissolution in aqueous systems.

Oswal Udhyog operates from C-211-213 Morya House, Off New Link Road, Mumbai 400053, Maharashtra, India. The company is classified as an imported-tier supplier with a harbor trust tier, indicating a baseline level of verification for international trade. While the supplier’s response rate is currently recorded at 0.00, the physical address and tier classification provide a starting point for buyer due diligence.

The supplier’s profile does not list additional certifications, client references, or operational history beyond the address and tier. Buyers are advised to verify the supplier’s current response capacity and confirm the availability of Acid Blue 9 in the required grades. The absence of response-rate data suggests direct outreach is necessary to assess communication reliability and production lead times.