For any chemical process, especially in sensitive industries like pharmaceuticals and high-performance coatings, the quality and specifications of the raw materials are non-negotiable. 1,8-Octanediol (CAS 629-41-4) is a prime example of an intermediate where precise specifications directly impact the final product's performance and integrity.

Understanding the Technical Data

When you plan to buy 1,8-Octanediol, whether for pharmaceutical intermediates or as a component in advanced coatings, scrutinizing its technical data sheet is the first step. Key parameters provided by manufacturers and suppliers typically include:

  • Appearance: Generally described as a White Solid, often in crystal flake or powder form. Consistency in appearance can be an initial indicator of product quality.
  • Assay: This is perhaps the most critical specification. For 1,8-Octanediol, an assay of ≥98.0% is commonly required, ensuring a high concentration of the active compound.
  • Acid Number: Typically measured in KOH-mg/g, this indicates the amount of free acids present. A low acid number (e.g., ≤1.0 KOH-mg/g) is desirable for many applications, preventing unwanted side reactions.
  • Koettstorfer Number (Saponification Value): Also measured in KOH-mg/g, this reflects the amount of ester or free fatty acids. A low value (e.g., ≤3.0 KOH-mg/g) is usually preferred.
  • Melting Point: For 1,8-Octanediol, this falls within the range of 57-61℃, a crucial physical property for handling and processing.
  • Boiling Point: Recorded at a specific pressure (e.g., 172℃ at 20 mm Hg), this is important for distillation and reaction temperature considerations.
  • Flash Point: A safety parameter, typically around 148℃ for this compound.
  • Refractive Index: An indicator of purity and chemical composition, often in the range of 1.438-1.440.

Why These Specifications Matter to Manufacturers and Buyers

For pharmaceutical companies, the high purity and low acid/saponification numbers are vital to ensure the safety and efficacy of their drugs. Impurities could lead to adverse reactions or reduced shelf life. Similarly, in the coatings industry, consistent physical properties and minimal acid content are crucial for achieving uniform film formation and desired performance characteristics. When you purchase from a reputable chemical supplier or manufacturer in China, these specifications are readily available and form the basis of trust.

Sourcing 1,8-Octanediol

When you are looking to buy 1,8-Octanediol, it’s essential to partner with a manufacturer that adheres to strict quality control measures. Requesting Certificates of Analysis (CoA) that clearly state these specifications is a standard practice. This document confirms that the batch you receive meets the agreed-upon standards. For bulk orders, understanding the packaging (e.g., 25kg/bag, 720bags/20' FCL or 200kg/drum, 80drums/20' FCL) is also important for logistics and storage.

In conclusion, the detailed specifications of 1,8-Octanediol are not mere technical details; they are the foundation upon which successful product development and manufacturing are built. By prioritizing suppliers who provide comprehensive and verified quality data, businesses can ensure the consistent quality and performance of their end products.