Description

Spadns is a high-purity, chromogenic chemical reagent widely recognized for its specific and sensitive colorimetric properties. This compound is essential for analytical chemistry applications, particularly in the precise quantification of specific ions in solution. It is primarily utilized by industrial laboratories, water treatment facilities, and manufacturers of analytical test kits for quality control and environmental monitoring.

Application

• Spectrophotometric Determination of Fluoride Ions: Primary use as a chromogenic reagent in analytical methods for fluoride analysis in water and other matrices.
• Water Quality Testing: Critical component in test kits and laboratory procedures for monitoring fluoride levels in drinking, industrial, and wastewater.
• Industrial Process Control: Used to monitor and control fluoride concentrations in chemical manufacturing, metal finishing, and semiconductor production processes.
• Research & Development: Employed in chemical research for developing new analytical methods and studying complexometric reactions.
• Environmental Analysis: Applied in the analysis of soil, air particulates, and biological samples for fluoride content.
• Pharmaceutical Analysis: Potential use in the quality control of raw materials and finished products where fluoride content is a critical parameter.

Basic Information

Product Name	Spadns
CAS No.	23647-14-5
Molecular Formula	C16H9N2Na3O11S3
Molecular Weight	580.38 g/mol
Synonyms	SPADNS; 2-(4-Sulfophenylazo)-1,8-dihydroxy-3,6-naphthalenedisulfonic Acid Trisodium Salt; 4,5-Dihydroxy-3-(4-sulfophenylazo)-2,7-naphthalenedisulfonic Acid Trisodium Salt; Sulfophenylazonaphthol Trisulfonate; Fluoride Reagent SPADNS; Alizarin Fluorine Blue related compound
EINECS	Contact for details

Quality Control

Our Spadns is manufactured under strict quality management systems to ensure batch-to-batch consistency and high performance in sensitive analytical applications. Each lot undergoes rigorous testing, including HPLC for purity, spectrophotometric absorbance verification, and moisture content analysis. A comprehensive Certificate of Analysis (COA) detailing all specifications is 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, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after use to prevent moisture absorption, which can affect performance.

Specification

Item	Specification
Appearance	Orange to red powder
Identification (IR)	Conforms
Purity (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Absorbance (Lambda max)	Conforms to reference
Solubility (in Water)	Clear solution

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