Description
Specifications Table
Product Name – Phenolphthalein TS acc. to USP
Quantity/Pack Size – 125 ml
Form – Liquid Solution
Grade – TS (Test Solution), acc. to USP
Application – pH Indicator, Acid-Base Titrations, Analytical Chemistry
Product Overview
Phenolphthalein TS (Test Solution), prepared strictly according to the United States Pharmacopeia (USP) standards, stands as a cornerstone for quality and reliability in diverse laboratory environments. This meticulously formulated indicator is universally recognized for its pivotal role in volumetric analysis, particularly in acid-base titrations. As a weak organic acid, phenolphthalein exhibits a distinct and reversible color change within a specific pH range, typically transitioning around pH 8.2 to 10.0. This property makes it an invaluable tool for accurately determining the equivalence point of various chemical reactions. Its characteristic transformation from a colorless state in acidic solutions to a vibrant pink or fuchsia hue in basic solutions provides an unambiguous visual signal, enabling precise determination of endpoints during analytical procedures. The USP-grade designation unequivocally assures users of its exceptional purity, consistent concentration, and dependable performance, which are critical attributes for achieving reproducible experimental outcomes and obtaining reliable analytical results. The stable and consistent formulation of this phenolphthalein solution ensures its long-term viability and maintains accuracy across countless applications that necessitate accurate pH indication. It is an integral component in analytical methodologies where precise pH monitoring is paramount, offering a dependable and compliant tool for a wide spectrum of scientific investigations and stringent quality control processes. Its specific chemical characteristics and adherence to pharmacopeial standards make it an indispensable reagent for any laboratory requiring a robust, accurate, and compliant pH indicator for general analytical and research applications.
FAQs
1. What is the primary use of Phenolphthalein TS?
Phenolphthalein TS is primarily used as a pH indicator in acid-base titrations to detect the equivalence point of a reaction by a visible color change.
2. How should Phenolphthalein TS be stored?
It should be stored in a tightly sealed container at room temperature, away from direct sunlight and heat, to maintain its stability and effectiveness.
3. What is the pH range for Phenolphthalein’s color change?
Phenolphthalein typically changes color from colorless to pink/fuchsia in the pH range of approximately 8.2 to 10.0.
4. Is this Phenolphthalein TS suitable for all types of titrations?
While highly effective for many acid-base titrations, its suitability depends on the strength of the acid and base involved. It is ideal for titrating weak acids with strong bases or strong acids with strong bases.
5. What does “acc. to USP” mean for this product?
“Acc. to USP” means “according to United States Pharmacopeia,” indicating that the solution meets the specific purity, concentration, and performance standards set by the USP.
