For any chemical procurement specialist or R&D scientist, understanding the precise specifications of a chemical intermediate is fundamental to successful sourcing and application. Crotonic Acid (CAS 107-93-7) is no exception. As a widely utilized C4 unsaturated carboxylic acid, its effectiveness in downstream applications like resin synthesis, coating formulations, agrochemicals, and pharmaceuticals hinges on adhering to strict quality parameters. This guide aims to provide clarity on the key specifications buyers should consider when looking to purchase Crotonic Acid.

The most critical specification for Crotonic Acid is its purity. Typically, industrial and pharmaceutical applications require a minimum purity of 99%. This high degree of purity ensures that the chemical performs as expected, minimizing the presence of contaminants that could interfere with reactions or compromise the quality of the final product. When evaluating potential suppliers, always look for detailed Certificates of Analysis (CoA) that confirm the assayed purity level. Reputable manufacturers, especially those based in China, often highlight this figure prominently.

Beyond purity, the physical form of Crotonic Acid is another important characteristic. It is commonly supplied as crystalline flakes, appearing white to light yellow. This physical state is important for handling, storage, and dissolution processes. The melting point, typically in the range of 70-72 °C, and boiling point, around 180-181 °C, are also key indicators of the compound's identity and quality. Manufacturers will usually provide these details in their product specifications.

Storage conditions are also vital for maintaining the integrity of Crotonic Acid. Proper storage involves keeping the material in a cool, dry, dark location within a tightly sealed container. It's crucial to protect it from incompatible materials and ignition sources. Understanding these requirements helps buyers ensure that the product remains stable from the point of receipt through to its use in manufacturing processes. This diligence is part of securing a stable supply chain when you buy from a chemical manufacturer.

When approaching a supplier for Crotonic Acid, be prepared to discuss your specific application needs. This will help the supplier provide the most suitable grade and quantity. Requesting samples for laboratory testing is a standard practice to verify that the product meets your internal quality benchmarks. Familiarizing yourself with these specifications empowers you to make informed decisions, whether you are comparing prices from different manufacturers or ensuring compliance for pharmaceutical intermediate use.