Description

3,3'-Dithiobispropanesulphonic Acid is an organosulfur compound featuring a disulfide bridge connecting two propanesulfonic acid groups. This unique structure makes it a valuable intermediate and reagent in advanced chemical synthesis, particularly for introducing sulfonate and disulfide functionalities. It is essential for researchers and manufacturers in the pharmaceutical, specialty chemical, and material science sectors. The compound is supplied with full traceability and quality documentation to support critical R&D and production processes.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), especially those requiring disulfide or sulfonate groups for bioactivity or solubility.
• Bioconjugation Reagent: Used in protein chemistry and antibody-drug conjugate (ADC) development for creating stable, cleavable linkages.
• Polymer Modification: Serves as a cross-linking agent or functional monomer to introduce ionic (sulfonate) groups and disulfide bonds into polymers for controlled degradation or responsive materials.
• Electroplating Additive: Acts as a brightener or stabilizing agent in specialty electroplating baths for improved metal deposition.
• Chemical Research: A versatile reagent in organic synthesis for constructing complex molecules with disulfide and sulfonic acid motifs.
• Surface Functionalization: Used to modify material surfaces (e.g., gold, polymers) to create self-assembled monolayers (SAMs) with specific chemical properties.

Basic Information

Product Name	3,3'-Dithiobispropanesulphonic Acid
CAS No.	17661-52-8
Molecular Formula	C6H14O6S4
Molecular Weight	310.42 g/mol
Synonyms	3,3'-Dithiodipropanesulfonic Acid; Bis(3-sulfopropyl) Disulfide; 3,3'-Dithiobis(1-propanesulfonic Acid); Disodium 3,3'-Dithiobis(propanesulfonate); SPS (common abbreviation); 3,3'-Dithiodi(propanesulfonic acid); 1-Propanesulfonic Acid, 3,3'-dithiobis-; DTDPA
EINECS	241-634-8

Quality Control

Our 3,3'-Dithiobispropanesulphonic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay, purity profiling, and identification, to ensure it meets stringent specifications for research and industrial use. Certificates of Analysis (COA) are provided with every shipment to guarantee traceability, consistency, and compliance with your project requirements.

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); keep the container 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
Residue on Ignition	≤ 0.1%

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