Description

Tetramethylmurexide Ammonium Salt is a specialized ammonium salt derivative of the murexide indicator complex. This compound is valued for its role as a sensitive colorimetric reagent, particularly in analytical chemistry for the detection and quantification of specific metal ions. It is primarily utilized by research institutions, analytical laboratories, and chemical manufacturers involved in complexometric titrations and spectroscopic analysis. The product is supplied as a high-purity material to ensure consistent and reliable performance in critical applications.

Application

• Complexometric Titrations: Acts as a metallochromic indicator for the titration of calcium, magnesium, and other divalent cations with EDTA.
• Spectrophotometric Analysis: Used in the development of colorimetric assays for the quantitative determination of metal ion concentrations in solution.
• Biochemical Research: Employed in studies of metal-protein interactions and enzyme kinetics where precise metal ion buffering is required.
• Water Quality Testing: Applied in environmental monitoring for the detection of hardness ions (Ca²⁺, Mg²⁺) in water samples.
• Teaching & Education: Serves as a demonstration reagent in university-level analytical and inorganic chemistry laboratories.
• Reagent Manufacturing: Used as a key intermediate or component in the formulation of proprietary analytical test kits and standardized solutions.

Basic Information

Product Name	Tetramethylmurexide Ammonium Salt
CAS No.	18641-48-0
Molecular Formula	C₁₂H₁₈N₆O₆
Molecular Weight	342.31 g/mol
Synonyms	Ammonium Purpurate; Murexide, Ammonium Salt; Tetramethylmurexide; 5,5'-Nitrilodibarbituric acid tetramethyl ester ammonium salt; Ammonium 2,4,6-trioxo-5-[(2,4,6-trioxo-1,2,3,4,5,6-hexahydro-5-pyrimidinyl)amino]-5H-pyrimidin-1-ide; CI 56085; NSC 401563
EINECS	Contact for details

Quality Control

Our Tetramethylmurexide Ammonium Salt is manufactured under controlled conditions to ensure high purity and batch-to-batch consistency. Each lot undergoes rigorous analytical testing, including identification by infrared spectroscopy (IR) and purity assessment by HPLC. We provide full traceability and a comprehensive Certificate of Analysis (COA) with every shipment, detailing all test results against established in-house specifications. For research requiring specific purity grades, please contact our technical team to discuss your 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). The product is light-sensitive and should be handled under appropriate conditions to prevent degradation. Keep the container tightly sealed when not in use to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Dark purple to violet powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0 %
Residue on Ignition	≤ 0.5 %
Solubility	Soluble in water, giving a purple solution

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