Description

Pyrocatechol Violet Sodium Salt is a high-purity, water-soluble organic compound widely used as a sensitive metallochromic indicator and complexometric reagent. Its primary value lies in its ability to form distinct, colored complexes with various metal ions, enabling precise analytical detection and quantification. This product is essential for research laboratories, quality control departments, and industrial processes requiring accurate metal ion analysis, particularly for aluminum, beryllium, and thorium.

Application

• Complexometric Titrations: As a visual endpoint indicator for the titration of metals like aluminum, beryllium, and thorium with EDTA.
• Spectrophotometric Analysis: For the quantitative determination of trace metal ions in environmental, geological, and industrial samples.
• Biochemical Research: As a staining agent or probe in studies involving metal-binding proteins and enzymatic activities.
• Water Quality Testing: Detection and measurement of specific metal contaminants in potable and wastewater.
• Pharmaceutical Analysis: Used in the testing of raw materials and finished products for metal impurity content.
• Teaching & Education: A standard reagent for demonstrating complexometric titration principles in academic laboratories.

Basic Information

Product Name	Pyrocatechol Violet Sodium Salt
CAS No.	312619-38-8
Molecular Formula	C19H11NaO7S
Molecular Weight	406.34 g/mol
Synonyms	Pyrocatechol Violet, Sodium Salt; Catechol Violet; 3,3',4'-Trihydroxyfuchsome-2'-sulfonic Acid Sodium Salt; Pyrocatechin Violet; PV Sodium Salt; 2',7'-Dihydroxy-3H-spiro[isobenzofuran-1,9'-xanthene]-3-one, 6'-hydroxy-3'-oxo- Sodium Sulfonate; Aluminon (related compound); Pyrocatecholsulfonephthalein.
EINECS	Contact for details

Quality Control

Our Pyrocatechol Violet Sodium Salt is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and performance consistency. A Certificate of Analysis (COA) detailing specific results for assay, absorbance, and impurity profiles is provided with every shipment to guarantee compliance with your application requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure the container is sealed tightly after each use to prevent absorption of atmospheric moisture, which may affect performance.

Specification

Item	Specification
Appearance	Dark green to brownish-green powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Absorbance (λ max)	Conforms
Loss on Drying	≤ 5.0%
Solubility (in Water)	Clear, colored solution

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