Isatin (Chemical Intermediate) （Dye intermediates）- 93% Crude SHENGYU® OEM China Factory

SHENGYU® Isatin (CAS 91-56-5)is a vital organic intermediate, presenting as an orange-red to brown crystalline powder. Specifically offered at a 93% crude purity, this product provides a highly economical and practical solution for industrial dye manufacturers who perform their own downstream refining or direct synthesis. Isatin is a foundational building block in the chemical industry, widely recognized for its reactive diketopiperazine structure, featuring a fused benzene and pyrrole ring system.

In the realm of dye synthesis and finishing, it is an indispensable precursor for producing high-performance colorants. It is explicitly utilized in the manufacturing of Disperse Yellow E-3G, as well as serving as a foundational material in the preparation of indigo derivatives and vibrant pigments like Maya Blue and Maya Yellow. Its unique reactivity facilitates essential chemical processes, including one-pot reductions and Knoevenagel condensations during complex dye formulation. As a core intermediate offering from Shengyu Chemical, we ensure a stable, high-volume supply of this versatile compound, tailored to meet the rigorous demands of modern chemical and textile processing facilities.

● Crucial Dye Synthesis Precursor: Essential for the commercial production of Disperse Yellow E-3G and serves as a core structure for various vat dyes and specialized textile pigments.

● Cost-Effective Crude Grade: : The 93% purity level strikes the perfect balance between raw material affordability and chemical yield, designed specifically for bulk industrial buyers with in-house refining processes.

● Versatile Reactivity in Finishing : Highly reactive indole-2,3-dione structure allows for efficient modifications, condensation reactions, and the creation of bis-Schiff bases essential for advanced dye formulations.

● Analytical & Multi-Industry Utility :Beyond dye manufacturing, it functions as a highly precise analytical reagent for the determination of copper ions, mercaptans, and thiophene.

● Consistent Quality & Supply: Professionally managed by Shengyu Chemical to guarantee reliable lot-to-lot consistency, preventing production downtimes in large-scale dye synthesis operations.

We have professional technical team which support target samples testing from customers around the World. Counter samples wilbe provided aftel evaluation. Meanwhile customization senvice is available in our factory.What's more,we can also provide pre shipment samples for new customers during our lst cooperation.

Packing: 25kg, 50kg, 125kg plastic barrels with pallets

Whether you have your own freight forwarder or you would like us to organize shipment; whether you require delivery F0B to a por in china or cif to a port near you,we are happy to quote and supply whichever way you choose. Please feel free to discuss all options with us.

Our delivery time :Within 20days after got T/T or L/c bank copy