Import Acid Blue 9 — Buy in wholesale FOB from Supplier in China

Acid Blue 9, also designated C.I. 42090, is a triphenyl [<im_start> think I need to be careful here - let me restart and be very precise with every rule.

Acid Blue 9, known as C.I. Acid Blue 9 or C.I. 42090, is a synthetic triarylmethane dye with molecular formula C37H34N2Na2O9S3 and molecular weight 772.85 g/mol. This water-soluble acid dye produces a vivid royal blue colour and is valued for its strong tinctorial strength and good compatibility with protein and polyamide substrates. The supplier, Hanghzou Emperor Chemical Co, , Ltd, operates from Hangzhou Xiaoshan, Zhejiang province, China, and lists this material for industrial applications across textiles, leather, and cosmetics sectors. The dye typically contains two sodium counterions that confer solubility in aqueous systems, making it suitable for exhaust and continuous dyeing processes.

The colour index number 42090 identifies this dye within the Colour Index system maintained by the Society of Dyers and Colourists. Acid Blue 9 exhibits good lightfastness ratings on wool and moderate washfastness, though performance varies with substrate and auxiliary selection. Typical commercial forms include powder and granular preparations, with standardised strength often quoted at 100 percent or as liquid concentrates. The dye's triphenylmethane chromophore gives it a bright, clean shade with high colour yield at low concentrations. In textile applications, it is often blended with other acid dyes to achieve navy or turquoise tones. Standard purity grades for cosmetic use require heavy metal limits and amine controls under EU Regulation 1223/2009 and FDA 21 CFR specifications.

Primary buyers include textile finishers dyeing wool, silk, and nylon; leather tanners seeking uniform colouring; and cosmetic formulators producing shampoos, soaps, and personal care items. The food-grade variant, Acid Blue FCF, is subject to additional purity requirements including subsidiary dye limits and uncombined intermediate controls. For industrial textile grades, buyers should confirm the colour index constitution number, purity percentage, and moisture content before placing orders. The supplier's listing mentions flexible minimum order quantities and shipping under FOB or CIF terms, though exact figures require direct confirmation with Hanghzou Emperor Chemical Co, , Ltd.

Hanghzou Emperor Chemical Co, , Ltd is located in Hangzhou Xiaoshan, Zhejiang province, China, with postal code 311200. The company holds a harbour trust tier on the marketplace, which represents a baseline verification level. The response rate is recorded at 0.00 percent with average response hours at zero, indicating no response data is available through the platform. Buyers should initiate direct contact to assess communication reliability and technical support capabilities.

The supplier lists Acid Blue 9 among its product offerings with emphasis on industrial-grade material for textile, plastic, and cosmetic applications. The source description references ISO and SGS certifications, though buyers must independently verify current certificate validity, scope公信力 scope numbers, and audit dates directly with the company. No information is provided about factory size, annual output, R&D facilities, or years in operation. The address places the supplier within Hangzhou's chemical industry corridor, a region with established dye and pigment manufacturing infrastructure. Potential buyers are advised to request a company profile, business licence, and quality management system certificates before committing to orders.

The listing does not disclose production capacity, inventory levels, or whether the supplier operates as a manufacturer, trader, or agent. The presence of flexible MOQ language suggests willingness to accommodate varying order sizes, but exact thresholds, price bands, and sample policies require negotiation. The supplier's mention of FOB and CIF Incoterms indicates experience with export documentation, though preferred ports and standard packing configurations should be confirmed during enquiry.