Sodium prop-2-yne-1-sulfonate CAS 55947-46-1

Chemical Name:Sodium prop-2-yne-1-sulfonate
CAS No.: 55947-46-1
Appearance: Colorless to pale yellow liquid
Assay:≥20.0%

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Table of Contents

Sodium Prop-2-yne-1-sulfonate (CAS 55947-46-1): Product Overview

Basic Specifications

Parameter Details
CAS Number 55947-46-1
Molecular Formula C₃H₃NaO₃S
Molecular Weight 142.11 g/mol
Appearance White crystalline powder
Solubility Highly soluble in water, moderate in polar solvents
Storage Conditions 2-8°C in airtight container

Comparative Analysis

Feature Sodium Prop-2-yne-1-sulfonate Sodium Propargyl Sulfonate Sodium Allyl Sulfonate
Reactivity High (acetylene group) Moderate Low
Thermal Stability Stable up to 250°C Degrades at 200°C Stable up to 180°C
Typical Applications Electroplating, polymer modification Corrosion inhibition Detergent formulations

Industrial Applications & Functional Mechanisms

1. Electroplating Additives

Enhances zinc/nickel electrodeposition by 30-40% through sulfonate group adsorption, improving coating uniformity in automotive parts production.

2. Polymer Modification Agent

Introduces sulfonic acid groups into polyurethane/PVC chains (<500 ppm concentration) for flame-retardant cable coatings meeting IEC 60332-1 standards.

3. Pharmaceutical Intermediates

Serves as precursor in synthesis of tyrosine kinase inhibitors (e.g., Erlotinib analogs) via Huisgen cycloaddition reactions.

Verified Client Implementations

Case 1: Advanced PCB Manufacturing (Shenzhen Huaxing Tech)

Challenge: Inconsistent copper deposition (±15% thickness variation) in HDI circuits
Solution: 0.8 g/L additive in acid copper bath
Outcome: Thickness variation reduced to ±3%, productivity increased 22%

Case 2: High-Performance Elastomers (Dow Chemical Shanghai)

Challenge: Achieving UL94 V-0 rating in silicone rubber
Solution: 1.2% w/w incorporation during polymerization
Outcome: LOI improved from 24% to 31%, passed 15-second vertical burn test

Case 3: API Synthesis (WuXi AppTec)

Challenge: Low yield (48%) in click chemistry step
Solution: 2.5 eq sulfonate in DMF/H₂O system
Outcome: Yield increased to 83%, reduced catalyst loading by 40%

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