从India供应商批发进口Acid Green 9 — FOB条款

Acid Green 9 is a synthetic acid dye catalogued under CAS 857-81-2, with the molecular formula C37H34ClN2NaO6S2 and EINECS registration 212-758-8, supplied by Sparrowings International of Ahmedabad, Gujarat as a powder. Also traded as Acid Brilliant Green B, this colorant serves leather, paper, textile, and polyamide dyeing markets. The specific molecular structure, a triarylmethane derivative, confers intense green coloration with good solubility in aqueous media.

The triarylmethane chromophore in Acid Green 9 provides high tinctorial strength and brilliant shade, though this class typically shows moderate light fastness compared to azo or anthraquinone acid dyes. Standard commercial material is 100% strength basis, with typical moisture content below 5% and sodium chloride or similar diluent to standardize application concentration. The molecular weight of approximately 723 g/mol and the presence of a single sulfonate group (mono-sulfonated) classify this as a levelling acid dye with relatively high water solubility and migration capacity during the dyeing cycle.

Primary applications include surface coloring of leather articles, tone-on-tone paper stock dyeing, and bright shades on wool, silk, and polyamide substrates where brilliance outweighs fastness demands. Paper mills value this dye for its direct application without mordant, while leather finishers use it in drum dyeing and spraying operations. Buyers should confirm with Sparrowings International the minimum order quantity, standard pack size, available technical support for shade formulation, and whether the supplier provides compatibility data for powders or liquid preparations for automated dosing systems.

Sparrowings International maintains its registered address at D-101, Maruti Homes, Opposite Shreenath Elegance, Nana Chiloda, Ahmedabad 382330, Gujarat, India. The supplier is classified under the Harbor trust tier, with zero percent response rate and no recorded average response time on the platform. This profile suggests limited digital engagement with inbound enquiries, though it does not indicate manufacturing scale or technical competence.

The company offers Acid Green 9 alongside other acid dyes under the Sparrowings brand, with this listing specifying applicability across leather, paper, textile, and polyamide sectors. No information is provided about factory locations, production equipment, research and development investment, environmental permits, or export experience. Buyers should conduct independent due diligence, including verification of business registration, tax identification, and any claimed quality certifications. The Gujarat location offers access to dyestuff raw material supply chains, but this geographic advantage should not substitute for supplier-specific verification.