Description

Pentasodium 2-(2-Oxido-3,5-Disulphonatophenoxy)-1,3,2-Benzodioxastibole-4,6-Disulphonate is a high-performance, water-soluble organoantimony complex primarily valued for its exceptional chelating and sequestering properties. This compound is critical for industrial processes where precise control of metal ions is required to prevent scaling, improve product stability, and enhance performance. It is an essential specialty chemical for manufacturers in sectors such as water treatment, textile processing, and polymer production.

Application

• Water Treatment: Acts as a highly effective scale and corrosion inhibitor in cooling towers, boilers, and reverse osmosis systems by sequestering calcium, magnesium, and other metal ions.
• Textile Industry: Used as a stabilizer and chelating agent in peroxide bleaching baths to deactivate trace metal ions that can catalyze fiber damage.
• Polymer & Plastics: Serves as a catalyst component or stabilizer in the production of polyesters (PET) and other condensation polymers.
• Detergent & Cleaning Formulations: Functions as a builder to enhance the efficacy of surfactants by softening water and preventing redeposition of soils.
• Paper & Pulp Manufacturing: Employed in bleaching sequences to chelate transition metals, improving brightness and protecting pulp fibers.
• Metal Surface Treatment: Used in electroplating and metal finishing baths to complex impurities and ensure uniform, high-quality deposits.

Basic Information

Item	Details
Product Name	Pentasodium 2-(2-Oxido-3,5-Disulphonatophenoxy)-1,3,2-Benzodioxastibole-4,6-Disulphonate
CAS No.	23940-36-5
Molecular Formula	C12H4Na5O19S4Sb
Molecular Weight	Contact for details
Synonyms	Pentasodium 2-(2-Oxido-3,5-disulfonatophenoxy)-1,3,2-benzodioxastibole-4,6-disulfonate; Antimony V, 2-[(2-hydroxy-3,5-disulfophenyl)oxy]-1,3,2-benzodioxastibole-4,6-disulfonic acid, pentasodium salt; Organoantimony sequestrant; Sb-chelating agent; Tiron analogue (antimony complex); Water treatment antimony inhibitor; Textile bleaching stabilizer (antimony-based)
EINECS	Contact for details

Quality Control

Our Pentasodium 2-(2-Oxido-3,5-Disulphonatophenoxy)-1,3,2-Benzodioxastibole-4,6-Disulphonate is manufactured under a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, performance, and compliance with agreed specifications. Comprehensive Certificates of Analysis (COA) documenting key parameters such as assay, impurity profile, and physical properties are available upon request.

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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after each use to prevent absorption of atmospheric moisture, which can lead to caking or reduced efficacy.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (Sb content)	Min. 98.0%
pH (5% solution)	8.0 - 10.0
Water Solubility	Completely soluble
Loss on Drying	Max. 2.0%
Heavy Metals (as Pb)	Max. 10 ppm

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