从Pakistan供应商批发进口Acid Red 361 Price — FOB条款

Acid Red 361 is an acid dye belonging to the azo dye class, characterised by a red chromophore system with sulfonic acid groups that confer water solubility and affinity for protein fibres and polyamide substrates. This colour index (C.I.) designation indicates a monoazo or disazo structure with typical molecular weight in the range 500-700 g/mol and an absorption maximum (lambda max) near 510-540 nm in aqueous solution. I & K Enterprises, based in Lahore, Punjab, offers this dye with payment terms of T/T or bank/wire transfer upfront upon proforma invoice, though specific batch purity, strength percentage, and physical form (powder or liquid) are not stated in the listing and should be confirmed directly.

The dye chemistry of Acid Red 361 typically involves a diazotised aromatic amine coupled to a naphthol or similar coupling component, with the sulfonic acid groups (-SO functional groups) ensuring solubility in water and compatibility with acid dyebath conditions (pH 2-6 typical). Standard commercial grades range from 50% to 80% active dye content, with the balance comprising sodium sulfate, dispersing agents, and moisture. The standard pH of a 1% solution is typically 5.0-7.5. Light fastness ratings on wool generally reach 4-5 on the ISO 105-B02 scale, though wet fastness properties vary with substrate and after-treatment. The supplier mentions regular and bulk order availability, suggesting capacity for volume supply from Pakistani stock or manufacture.

Acid Red 361 finds primary application in wool dyeing, silk coloration, nylon carpet fibres, and leather finishing, where the sulfonic acid groups form ionic bonds with protonated amino groups in the substrate. Industrial users include textile mills, carpet manufacturers, tanneries, and specialty paper producers. Buyers should verify the exact colour strength (often expressed as % of standard), the salt content (which affects solubility and spotting), and whether the batch is standardised against a recognised reference. I & K Enterprises operates from Lahore's commercial district; importers should confirm sample availability, MSDS/SDS provision, and whether the material is stocked locally or subject to import lead times from third-party manufacturers.

I & K Enterprises is located at 158-a, New Muslim Town, Lahore, Punjab 54000, Pakistan, positioning the company within Pakistan's second-largest city and a major industrial and logistics hub in the Punjab province. The listing carries a 'harbor' trust tier designation and shows a 0.00% response rate with zero average response hours, indicating no recorded buyer engagement through the platform's messaging system. This absence of response data means prospective buyers should establish direct contact channels, verify phone and email responsiveness, and consider requesting references from prior dye or chemical transactions before committing to orders.

The company's offering focuses on Acid Red 361 with flexible quantity terms, referencing both regular and bulk orders without stating manufacturing capability, warehouse capacity, or whether the firm operates as a manufacturer, importer, or trading house. The source description emphasises payment security (T/T upfront) rather than technical product support, quality certification, or after-sales service. Buyers should conduct due diligence on the company's registration with the Pakistan Chemical and Dyes Merchants Association or equivalent bodies, request a current business registration certificate, and clarify whether I & K Enterprises holds inventory in Lahore or sources on indent against confirmed orders.