NINGBO INNO PHARMCHEM CO.,LTD. is pleased to announce the consistent availability of high-purity Phenolphthalein, a critical chemical reagent with the CAS number 77-09-8. Known for its reliability and performance, Phenolphthalein is a staple in laboratories worldwide, primarily recognized for its indispensable role as an acid-base indicator. As a leading supplier of quality chemical compounds, NINGBO INNO PHARMCHEM CO.,LTD. ensures that its Phenolphthalein meets stringent analytical standards, making it suitable for a wide range of scientific and industrial applications.

Phenolphthalein is an organic compound belonging to the phthalein dye family. Its molecular formula is C20H14O4, and it has a molecular weight of 318.32 g/mol. In its pure form, it typically presents as a white to yellowish-white crystalline powder. One of its defining characteristics is its solubility profile: it is only slightly soluble in water but readily dissolves in common organic solvents such as ethanol and ether. This solubility property is important for preparing solutions used in various analytical techniques.

The melting point of Phenolphthalein is reported to be between 260 and 263 °C. Under normal atmospheric pressure, it decomposes before reaching its boiling point. These physical properties are key identifiers for confirming the purity and quality of the substance, and NINGBO INNO PHARMCHEM CO.,LTD. maintains strict quality control measures to ensure these parameters are consistently met in every batch supplied to customers.

The most prominent application of Phenolphthalein is its function as a pH indicator. This is due to its ability to undergo a structural change in response to variations in acidity or alkalinity, resulting in a visible color change. Phenolphthalein exhibits different colors across specific pH ranges. Below a pH of approximately 8.2, it remains colorless. As the pH increases, typically between 8.2 and 10.0, the solution containing Phenolphthalein turns pink or fuchsia. Above a pH of 10.0, the color may fade again, though this upper transition is less commonly utilized in standard titrations than the lower transition range. This sharp and distinct color change within a narrow alkaline pH range makes it an excellent indicator for titrations involving a strong base and a strong acid, or a weak acid and a strong base, where the equivalence point falls within or close to this pH range.

Beyond its primary use in acid-base titrations in analytical chemistry, Phenolphthalein has had historical applications. It was notably used as an active ingredient in some laxative preparations. However, due to concerns regarding potential health effects, its use in pharmaceutical products has been significantly restricted or banned in many regions globally. Today, its main and safest application remains within the laboratory setting as a crucial analytical tool.

NINGBO INNO PHARMCHEM CO.,LTD. is committed to providing Phenolphthalein of the highest quality, specifically designated as Analytical Pure (AR) and Reagent Grade. This signifies that the product meets stringent specifications regarding purity (typically 99% minimum) and limits on impurities, ensuring reliable and reproducible results in critical laboratory work. Our quality assurance processes adhere to international standards, giving customers confidence in the consistency and integrity of the chemical supplied.

Proper storage is essential to maintain the stability and effectiveness of Phenolphthalein. NINGBO INNO PHARMCHEM CO.,LTD. advises storing Phenolphthalein in a sealed container in a cool, dry place, away from direct light and heat sources. The crystalline powder exhibits excellent stability under these recommended storage conditions, ensuring a long shelf life for laboratory stock.

Our packaging and logistics are designed to ensure the safe and efficient delivery of Phenolphthalein to customers worldwide. Available in various package sizes to meet different needs, from smaller laboratory quantities (e.g., 25g vials) to larger bulk orders, the product is securely packaged to prevent contamination or degradation during transport. NINGBO INNO PHARMCHEM CO.,LTD. facilitates various freight options, including logistics for small quantities or air transport, and ocean freight for larger shipments, offering flexibility based on customer requirements and location. We strive for efficient lead times, typically dispatching products within a few days, and provide necessary tracking information.

For customers interested in evaluating the quality of our Phenolphthalein before committing to a large order, sample requests are welcomed. We understand the importance of confirming product suitability for specific applications. NINGBO INNO PHARMCHEM CO.,LTD. maintains flexible minimum order quantities (MOQ) depending on the specific product and packaging, accommodating both research-scale and larger production needs. Our goal is to serve a diverse clientele requiring high-quality chemical reagents.

When seeking a dependable Phenolphthalein manufacturer or a trusted Phenolphthalein supplier, laboratories and chemical companies can rely on NINGBO INNO PHARMCHEM CO.,LTD. We provide competitive Phenolphthalein price options based on quantity and packaging requirements. Inquiries are always welcome for those looking to buy Phenolphthalein or purchase Phenolphthalein of analytical grade. Our dedicated sales and technical teams are available to assist with product specifications, pricing, and logistics. Payment processes are streamlined, supporting common methods such as wire transfer, T/T, and other secure electronic options, ensuring a smooth transaction experience.

NINGBO INNO PHARMCHEM CO.,LTD. stands ready to support the needs of the analytical chemistry community and other industries requiring high-quality Phenolphthalein (CAS 77-09-8). Our commitment to purity, quality, and reliable supply makes us an ideal partner for your chemical reagent requirements. Contact us today to learn more about our product offerings or to place an inquiry for Phenolphthalein.