For professionals in the chemical and pharmaceutical industries, sourcing high-quality raw materials is paramount. Phenolphthalein (CAS 77-09-8) is one such compound, widely used as a pH indicator and an organic intermediate. This article aims to guide procurement managers and R&D scientists on understanding and purchasing Phenolphthalein, highlighting what to look for from a reputable manufacturer.

Understanding Phenolphthalein: Properties and Applications

Phenolphthalein, appearing as a white to yellowish-white crystalline powder, is an organic compound with the formula C20H14O4. Its primary utility lies in its function as a pH indicator, exhibiting a color change from colorless to pink/deep-red in alkaline solutions (typically above pH 8.5). This characteristic makes it indispensable for acid-base titrations in analytical chemistry laboratories. Beyond its indicator role, Phenolphthalein also serves as a vital intermediate in the synthesis of various chemical compounds, particularly within the chemical medicine sector.

When considering a purchase, it’s crucial to look for specific grades and purity levels. USP (United States Pharmacopeia) grade Phenolphthalein is often preferred for pharmaceutical applications due to its stringent quality standards. Purity levels, such as 99% or higher, ensure reliable performance in sensitive chemical processes and analytical testing. For buyers looking to buy Phenolphthalein USP grade in China, understanding these specifications is key to making an informed decision.

Key Considerations When Buying Phenolphthalein

As a procurement manager, your priorities will likely include product quality, consistent supply, and competitive pricing. When sourcing Phenolphthalein, pay attention to:

  • Purity and Grade: Ensure the product meets the required specifications, such as USP, BP, or EP, and the assay percentage.
  • Supplier Reputation: Choose a supplier with a proven track record and verifiable certifications. Companies that provide detailed product specifications and quality control reports are preferable.
  • Manufacturing Capacity: For bulk requirements, confirm the manufacturer's production capacity (e.g., 9000 tons per year) to ensure a stable supply chain.
  • Packaging and Storage: Proper packaging, such as fiber cans, and recommended storage conditions (cool, dry) are important for maintaining product integrity.

Navigating the Market for Phenolphthalein Suppliers

When searching for a Phenolphthalein chemical intermediate supplier, especially one based in China, leverage platforms that offer detailed company information and product comparisons. Look for suppliers who are audited and have transparent business practices. Understanding the 77-09-8 price for laboratory reagents or industrial batches will involve comparing quotes from multiple qualified vendors. Remember, the cheapest option might not always be the best; prioritize reliability and quality assurance, especially when dealing with critical chemical components.

For those looking to purchase Phenolphthalein, partnering with a reputable high purity Phenolphthalein manufacturer ensures you receive a product that meets your exact needs. By focusing on these critical aspects, buyers can confidently secure the necessary quantities of this essential organic intermediate, supporting their ongoing research and production activities.