Description

Zincon CAS NO 135-52-4 is a high-purity, heterocyclic organic compound widely recognized as a highly sensitive and selective colorimetric reagent for the detection and quantification of zinc and copper ions. This compound matters for its critical role in analytical chemistry, providing a reliable method for trace metal analysis in complex matrices. Industries that need it include environmental monitoring laboratories, pharmaceutical quality control, water treatment facilities, and industrial process control where precise metal ion determination is essential.

Application

• Spectrophotometric Analysis: Primary use as a chromogenic agent for the colorimetric determination of zinc (Zn²⁺) and copper (Cu²⁺) ions in aqueous solutions.
• Environmental Testing: Detection of trace heavy metals in water, soil, and industrial effluent samples for environmental compliance and safety monitoring.
• Pharmaceutical QC: Used in the analysis of raw materials and finished products to ensure the absence of metallic impurities as per pharmacopeial standards.
• Biochemical Research: A probe for studying zinc proteins, metalloenzymes, and metal ion transport in biological systems.
• Industrial Process Control: Monitoring metal ion concentrations in plating baths, cooling systems, and chemical manufacturing processes.
• Food & Beverage Safety: Potential application in screening for metallic contaminants in food products and ingredients.

Basic Information

Product Name	Zincon
CAS No.	135-52-4
Molecular Formula	C₂₀H₁₆N₄O₆S
Molecular Weight	440.43 g/mol
Synonyms	Zincon; 2-Carboxy-2'-hydroxy-5'-sulfoformazylbenzene; o-[1-(2-Hydroxy-5-sulfophenyl)-3-phenyl-5-formazano]benzoic acid; Zincon sodium salt (common commercial form); Zinc indicator; 135-52-4; Benzoic acid, 2-[1-(2-hydroxy-5-sulfophenyl)-3-phenyl-1H-formazan-5-yl]-
EINECS	205-202-1

Quality Control

Our Zincon is manufactured under strict quality management systems to ensure batch-to-batch consistency and high performance. Each lot undergoes rigorous analytical testing, including identity confirmation by IR spectroscopy, purity assessment by HPLC, and functional performance validation. Certificates of Analysis (COA) detailing all test results are provided with every shipment to support your quality assurance protocols.

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). The product is light-sensitive (store away from light) and hygroscopic (moisture-sensitive). Keep away from strong acids and oxidizing agents.

Specification

Item	Specification
Appearance	Orange-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0 %
Residue on Ignition (Sulfated Ash)	≤ 0.5 %
Heavy Metals (as Pb)	≤ 20 ppm
Functional Test (Absorbance)	Conforms

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