从China供应商批发进口4, 4-Dinitrostilbene-2, 2-Disulfonic Acid — FOB条款

4,4-Dinitrostilbene-2,2-Disulfonic Acid is an orange powder used primarily as an intermediate in the synthesis of dyes, particularly for textile and leather applications. Its molecular structure, featuring two nitro groups and two sulfonic acid groups on a stilbene backbone, provides reactivity for azo dye formation and water solubility, which is critical for industrial dyeing processes. The compound is supplied with a defined quality index, including minimum content for the active component and limits for impurities.

The material has a molecular formula of C14H10N2O10S2 and a molecular weight of 430 g/mol, with a CAS number of 128-42-7. Its orange appearance is a key identifier, and the binitro acid content is specified at a minimum of 66.0% on a dry basis. The compound also contains controlled levels of binitrobenzyl derivatives (≤0.5%), other organic impurities (≤2.0%), inorganic salts (≤2.0%), and water-insoluble matter (≤1.0%). These specifications ensure consistency in dye synthesis and final product color fastness.

Textile manufacturers and dye producers source this intermediate for its role in creating vibrant, long-lasting colors in fabrics and leather. The compound is typically packed in 25 kg plastic woven bags, which are suitable for bulk handling and storage. Buyers should confirm the supplier’s ability to provide consistent batches, as variations in impurity profiles can affect dye performance. The material’s stability under standard storage conditions makes it a reliable choice for large-scale production.

Luoyang Hanyi Chemical Co., Ltd is headquartered in Luoyang, Henan Province, with its office located at Room 505, Block C, Jinyuan International, Taiyuan Road, Jianxi District. The company specializes in the production and supply of chemical intermediates, including dye precursors like 4,4-Dinitrostilbene-2,2-Disulfonic Acid. Its operations cater to industrial clients in the textile, leather, and specialty chemical sectors.

The supplier holds a harbor trust tier, indicating a baseline level of verification. While response rate and average response time data are not available, the company’s listing confirms its focus on providing quality-controlled dye intermediates. Buyers are encouraged to contact Luoyang Hanyi Chemical Co., Ltd directly to discuss specific requirements, such as custom formulations, additional purity grades, or alternative packaging options.