Description

Murexide is a high-purity, analytically significant ammonium purpurate salt widely recognized as a metallochromic indicator. Its primary commercial value lies in its selective chelating properties, making it an essential reagent for complexometric titrations in analytical chemistry. This product is critical for quality control laboratories and R&D facilities in the chemical, metallurgical, and environmental sectors requiring precise metal ion quantification.

Application

• Complexometric Titration Indicator: The predominant use is as a visual endpoint indicator for the titration of calcium, nickel, cobalt, and copper ions with EDTA.
• Analytical Reagent: Employed in the quantitative analysis of metal ions in various samples, including alloys, ores, and industrial process streams.
• Research & Development: Used in biochemical and inorganic chemistry research to study metal-ligand interactions and complex formation constants.
• Educational Laboratories: A standard reagent in university and technical college labs for teaching analytical chemistry and titration techniques.
• Water Hardness Analysis: Applied in methods for determining calcium and magnesium concentrations in water samples.

Basic Information

Product Name	Murexide
CAS No.	3051-09-0
Molecular Formula	C8H8N6O6
Molecular Weight	284.19 g/mol
Synonyms	Ammonium Purpurate; Murexide Indicator; 5,5'-Nitrilodibarbituric Acid Monoammonium Salt; CI 56085; NSC 40179; Purple of Cassius (historical); Roccellin
EINECS	221-266-5

Quality Control

Our Murexide is manufactured under a strict quality management system to ensure batch-to-batch consistency and reliability for analytical applications. Each lot undergoes comprehensive testing, including identification, purity assay, and loss on drying. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain stability and performance.

Specification

Item	Specification
Appearance	Reddish-brown to purple powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Solubility (Water)	Partially soluble, forms purple solution
Heavy Metals (as Pb)	≤ 20 ppm

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