For professionals in the chemical and pharmaceutical industries, the quality of raw materials directly impacts the success of their operations. When procuring 4-Bromobutyl Acetate (CAS 4753-59-7), a key chemical intermediate, understanding and verifying critical quality metrics is non-negotiable. This guide aims to equip buyers with the knowledge to select the best 4-Bromobutyl Acetate from manufacturers and suppliers, particularly those based in China.

The most fundamental quality indicator for 4-Bromobutyl Acetate is its purity, typically expressed as an assay percentage. Most manufacturers, including leading China suppliers, will offer this product with a minimum assay of 97%. However, depending on the specific application, higher purities might be required. Buyers should always confirm the specified purity level and understand the analytical methods used (e.g., GC – Gas Chromatography) to determine it. Purchasing materials that meet or exceed your purity requirements ensures predictable reaction outcomes and product performance.

The physical appearance of 4-Bromobutyl Acetate is another important parameter. As described by most reliable manufacturers, it should be a colorless to light yellow liquid. Any significant deviation from this description could indicate contamination or degradation, prompting further investigation into the product's quality and handling.

When sourcing from international suppliers, particularly China manufacturers, it is vital to look for comprehensive documentation. This includes a Certificate of Analysis (CoA) for each batch, detailing the specific test results for purity, appearance, and any other relevant parameters. Safety Data Sheets (SDS) are also mandatory, providing crucial information on handling, storage, and potential hazards. A proactive supplier will readily provide these documents upon request.

For those in regulated industries like pharmaceuticals, compliance with specific quality standards is critical. While the source material is an intermediate, adherence to standards like USP, BP, or EP can be a strong indicator of a manufacturer's commitment to quality. If your synthesis process targets these industries, verifying that your chosen supplier for 4-Bromobutyl Acetate can meet these benchmarks is a wise step.

Finally, the packaging and minimum order quantity (MOQ) should align with your operational needs. Common packaging for 4-Bromobutyl Acetate is 25kg drums, with a minimum order quantity often around 1kg. Understanding these logistical aspects ensures a smooth procurement process. When looking to buy 4-Bromobutyl Acetate, always engage with suppliers who are transparent about these details and responsive to your inquiries.