For R&D scientists and procurement professionals in the chemical industry, detailed product specifications are crucial when deciding to buy or purchase any chemical intermediate. Chromotropic acid disodium salt dihydrate (CAS 5808-22-0) is no exception. Understanding its key quality parameters ensures that the compound will perform as expected in synthesis and formulation processes. This guide focuses on the essential specifications to look for when sourcing this vital chemical from a manufacturer or supplier.

The Importance of Purity: 99% Minimum Assay

The most critical specification for Chromotropic acid disodium salt dihydrate is its purity. Typically, suppliers will guarantee a minimum assay of 99%. This high level of purity is indispensable for several reasons:

  • Reaction Yield: Impurities can lead to unwanted side reactions, reducing the yield of the desired product in organic synthesis.
  • Product Quality: The purity of the intermediate directly influences the final product's purity, especially critical in pharmaceutical and fine chemical applications.
  • Consistency: A consistently high assay ensures predictable and reproducible results in your laboratory or manufacturing process.

When you search for ‘buy Chromotropic acid disodium salt dihydrate’, always prioritize suppliers who clearly state and can back up their purity claims with a Certificate of Analysis (CoA). This document provides batch-specific analytical data, confirming that the product meets the advertised specifications.

Appearance and Physical Characteristics

Another important specification is the physical appearance. Chromotropic acid disodium salt dihydrate is generally described as a white powder. Any significant deviation from this description, such as discoloration or the presence of foreign particles, could indicate contamination or improper handling. For bulk purchases, ensuring consistent appearance across batches is a good indicator of quality control.

Key Analytical Parameters

Beyond the main assay, other analytical parameters are often included in product specifications and are essential to review:

  • CAS Number: Confirming the CAS number is 5808-22-0 is vital for accurate identification and sourcing.
  • Molecular Formula and Weight: C10H10Na2O10S2 and a molar mass of ~400.29 g/mol are standard identifiers.
  • Water Content: Specifications regarding water content (e.g., via Karl Fischer titration) are important as they can affect the effective purity and reactivity.
  • Solubility: Information on solubility in common solvents (like water) helps in planning reaction conditions.
  • Melting Point: While decomposition may occur, a specified melting point range can serve as an indicator of purity.

Choosing a Reliable Supplier

When looking for a ‘Chromotropic acid disodium salt dihydrate manufacturer China’ or ‘CAS 5808-22-0 supplier’, paying close attention to these quality specifications is paramount. A reputable supplier will not only meet these standards but also provide excellent customer service, competitive pricing, and reliable logistics. Requesting a quote and a sample allows you to physically assess the product and the supplier’s responsiveness before committing to a larger purchase.

By focusing on detailed quality specifications, procurement professionals can make informed decisions and secure a reliable supply of Chromotropic acid disodium salt dihydrate for their critical synthesis applications.