Description

1,3-Propanedisulfonic Acid Disodium Salt is a high-purity, water-soluble organic sulfonate salt valued for its chelating and buffering properties. This compound is essential in applications requiring precise control of metal ions and pH stability. It serves as a critical intermediate and functional additive in the pharmaceutical, agrochemical, and specialty chemical manufacturing sectors.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and as a buffering agent in formulation.
• Metal Chelation & Catalysis: Acts as a ligand or co-catalyst in metal-catalyzed organic reactions and in processes requiring specific metal ion sequestration.
• Electroplating & Surface Treatment: Functions as a brightener and stabilizer in electroplating baths to improve deposit quality and bath life.
• Water Treatment: Employed as a scale inhibitor and dispersant in industrial water systems.
• Chemical Synthesis: Serves as a building block for synthesizing more complex sulfonated compounds, dyes, and surfactants.
• Analytical Chemistry: Used in the preparation of buffer solutions for chromatography and other analytical techniques.

Basic Information

Product Name	1,3-Propanedisulfonic Acid Disodium Salt
CAS No.	36589-58-9
Molecular Formula	C3H6Na2O6S2
Molecular Weight	272.17 g/mol
Synonyms	Disodium 1,3-Propanedisulfonate; Propane-1,3-disulfonic Acid Disodium Salt; 1,3-Propanedisulfonate Disodium Salt; PDDS; 1,3-Propanedisulfonic Acid Sodium Salt; Disodium Propane-1,3-disulfonate; NSC 403819
EINECS	Contact for details

Quality Control

Our 1,3-Propanedisulfonic Acid Disodium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for industrial and research applications. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and consistency.

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 to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
pH (5% solution)	6.0 - 8.0

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