For procurement managers and R&D scientists in the chemical and pharmaceutical sectors, understanding the sourcing of key intermediates like Sodium Naphthionate (CAS 130-13-2) is paramount. This compound, also known by its IUPAC name sodium 4-aminonaphthalene-1-sulfonate, plays a critical role in various industrial applications, most notably in the synthesis of dyes and pigments, and as an analytical reagent. Navigating the complexities of chemical procurement requires knowledge of product specifications, reliable manufacturers, and competitive pricing.

Sodium Naphthionate is recognized for its utility as a precursor in the manufacturing of azo dyes, which are widely used in the textile, paper, and leather industries. Its specific chemical structure lends itself to creating vibrant and stable colorants. Beyond its role in coloration, it functions as a crucial analytical reagent, specifically employed in tests for nitrous acid and in the quality control of certain food colorants. This dual functionality underscores its importance in diverse chemical supply chains.

When looking to buy Sodium Naphthionate, particularly from Chinese manufacturers, several factors deserve close attention. Purity is a primary concern, with specifications often ranging from 95% upwards. Buyers should also consider the physical form, typically a crystalline powder, and its stability under storage conditions (recommended below +30°C). Understanding the CAS number, 130-13-2, is essential for accurate identification and sourcing.

For businesses seeking a consistent and cost-effective supply, identifying reputable Sodium 4-Amino-1-Naphthalenesulfonate suppliers in China is key. A direct relationship with a manufacturer can often lead to better pricing and more direct technical support. When requesting a quote, it’s advisable to specify the required quantity, desired purity, and delivery terms. Factors such as packaging, minimum order quantities, and payment terms (L/C, T/T, etc.) also need to be clarified to ensure a smooth transaction.

The global chemical market offers numerous options, but leveraging the manufacturing capabilities of China provides access to a broad range of products at competitive prices. By carefully vetting suppliers and understanding the nuances of sourcing intermediates like Sodium Naphthionate, companies can secure the materials necessary for their production and R&D activities. For those looking to purchase Sodium Naphthionate, engaging with established manufacturers and suppliers is the most direct route to obtaining high-quality chemicals reliably.