从India供应商批发进口Acid Black 63 — FOB条款

Acid Black 63 is an acid dye with the CAS number 32517-36-5, also known by the trade name Neutral Black S-2R. It is supplied by Sparrowings International as a powder-form product, with the chemical formula C16H11N3O4. Originating from Gujarat, India, this dye is primarily used in leather and textile dyeing, as well as for polyamide materials. Its molecular structure is designed for strong affinity to protein-based and synthetic fibres, ensuring consistent uptake during the dyeing process.

The dye belongs to the acid class, which is characterised by its ability to dissolve in water and bind to fibres under acidic conditions. Typical for acid dyes, it offers good light and wash fastness, which are critical for maintaining colour integrity in finished goods. Standard industry practice for such dyes includes a solubility of at least 50 g/l in water at 25°C, and a pH range of 2-4 for optimal application. Acid Black 63 is also known for its stability in storage, with a standard shelf life of 24 months when kept in dry conditions.

Textile manufacturers, leather finishers, and polyamide processors source Acid Black 63 for applications where deep, uniform black shades are required. It is commonly used in batch dyeing and continuous processes for fabrics like wool, silk, and nylon. Buyers should confirm the dye’s compatibility with their specific fibre types and processing conditions, as well as the required fastness properties for their end products. Trade terms such as MOQ, packaging, and lead time should be verified directly with Sparrowings International.

Sparrowings International is based in Ahmedabad, Gujarat, with its registered address at D-101, Maruti Homes, Opp. Shreenath Elegance, Nana Chiloda, 382330. The company operates as a supplier of acid dyes, including Acid Black 63, and focuses on providing products for textile and leather applications. Its profile indicates a harbor trust tier, though no response rate or average response time data is currently available.

The supplier’s product portfolio includes dyes for polyamide and other synthetic fibres, with a stated brand name of Sparrowings for its offerings. The company does not provide additional details on certifications, production capacity, or export history in its listed profile. Buyers are advised to contact Sparrowings International directly to confirm specifics such as quality control measures, testing methods, and compliance with industry standards.