Description

Phenolphthalein Complexon is a high-purity, specialized chelating agent and metallochromic indicator derived from phenolphthalein. This compound matters for its exceptional selectivity and sensitivity in complexometric titrations, particularly for the precise determination of calcium and other alkaline earth metals. Industries requiring stringent analytical control, such as pharmaceutical manufacturing, water treatment, and advanced chemical research, rely on its consistent performance to ensure product quality and process reliability.

Application

• Complexometric Titration Indicator: Primary use as a metallochromic indicator for the titration of calcium, barium, and magnesium ions with EDTA.
• Pharmaceutical Analysis: Used in the quality control of raw materials and finished products, especially for calcium content determination in supplements and active pharmaceutical ingredients (APIs).
• Water Hardness Testing: Employed in analytical kits and laboratory methods for accurately measuring calcium and magnesium concentrations in industrial and municipal water.
• Research & Development: Serves as a key reagent in biochemical and analytical chemistry research for studying metal ion binding and developing new analytical methodologies.
• Food & Beverage Industry: Applied in the analysis of mineral content, such as calcium fortification levels in dairy products and beverages.
• Industrial Process Control: Monitors metal ion concentrations in chemical manufacturing processes, including catalyst preparation and effluent treatment.

Basic Information

Product Name	Phenolphthalein Complexon
CAS No.	62698-58-2
Molecular Formula	C30H26N2O10
Molecular Weight	574.54 g/mol
Synonyms	Phenolphthalein-3',3''-bis(methyliminodiacetic acid); Calcon Carboxylic Acid; 3,3-Bis[N,N-bis(carboxymethyl)aminomethyl]phenolphthalein; NSC 113999; Phenolphthalein Complexone; Phthalein Purple; Calcium Indicator; Metallochromic Indicator for Calcium
EINECS	Contact for details

Quality Control

Our Phenolphthalein Complexon is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via IR spectroscopy, to ensure it meets the high standards required for analytical reagent applications. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm
Calcium Sensitivity Test	Passes test

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.