Description

Thionalide is a high-purity analytical reagent and complexing agent, primarily recognized for its selective precipitation of certain metal ions. This compound is valued for its critical role in gravimetric analysis and as a reagent in spectrophotometric determinations, ensuring precise and reliable results in sensitive laboratory procedures. It is an essential material for analytical chemistry laboratories, metallurgical testing, and research institutions focusing on trace metal analysis and separation science.

Application

• Gravimetric Analysis: Selective precipitation reagent for metals like tin, lead, and bismuth in quantitative analysis.
• Spectrophotometry: Used as a chromogenic agent for the colorimetric determination of specific metal ions.
• Trace Metal Separation: Employed in separation and preconcentration techniques prior to instrumental analysis (e.g., AAS, ICP).
• Analytical Chemistry Reagent: A key component in standardized test methods for metal impurity detection.
• Research & Development: Serves as a chelating agent in studies involving metal coordination chemistry.
• Quality Control Laboratories: Used in the pharmaceutical and metallurgical industries for raw material and finished product testing.

Basic Information

Product Name	Thionalide
CAS No.	93-42-5
Molecular Formula	C10H9NOS
Molecular Weight	191.25 g/mol
Synonyms	2-Mercapto-N-2-naphthylacetamide; Thioglycolic-2-naphthylamide; 2-Naphthylthioglycolamide; N-2-Naphthylthioglycolamide; 2-(2-Naphthylamino)-2-oxoethanethiol; Thioacetamide, N-2-naphthyl-; α-Mercapto-N-2-naphthylacetamide
EINECS	202-247-5

Quality Control

Our Thionalide is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high analytical purity. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, melting point, and residue on ignition. Our quality system is designed to meet the rigorous demands of analytical reagent applications.

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 light-sensitive nature and propensity for oxidation, prolonged exposure to light and air should be avoided. For long-term storage, consider an inert atmosphere.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Melting Point	124°C - 128°C
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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