3918-73-8

Basic information

• Product Name: 1-(2-Hydroxy-3-sulfopropyl)-pyridinium betane
• Synonyms: 2-Hydroxy-1-(1-pyridyl)-3-propanesulfonate;pyridinium,1-(2-hydroxy-3-sulfopropyl)-,hydroxide,innersalt;Pyridinium,1-(2-hydroxy-3-sulfopropyl)-,innersalt;PPS-OH;PYRIDINIUM N-PROPYL HYDROXY SULFOBETAINE;Pyridinium hydroxy propyl sulphobetaine;1-(2-HYDROXY-3-SULFOPROPYL)-PYRIDINIUM BETAINE;1-(2-hydroxy-3-sulfopropyl)-pyridinium betane
• CAS NO: 3918-73-8
• Molecular Formula: C₈H₁₁NO₄S
• Molecular Weight: 334.38858
• EINECS: 223-485-2
• Product Categories: Nickel plating intermediates
• Mol File: 3918-73-8.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 111°C
• Appearance: White powder
• Density: 1.30
• Vapor Pressure: 0Pa at 25℃
• Storage Temp.: 2-8°C
• Water Solubility: 1280g/L at 23℃
• CAS DataBase Reference: 1-(2-Hydroxy-3-sulfopropyl)-pyridinium betane(CAS DataBase Reference)
• NIST Chemistry Reference: 1-(2-Hydroxy-3-sulfopropyl)-pyridinium betane(3918-73-8)
• EPA Substance Registry System: 1-(2-Hydroxy-3-sulfopropyl)-pyridinium betane(3918-73-8)

Safety Data

• Hazardous Substances Data: 3918-73-8(Hazardous Substances Data)

Usage

Chemical Properties

Colorless to light yellow liquid

Uses

Different sources of media describe the Uses of 3918-73-8 differently. You can refer to the following data:
1. 1-(2-Hydroxy-3-sulfopropyl)-pyridinium betane(PPS-OH) can be used to prepare electroplating brightener and nickel plating strong leveling agent.
2. Nickel plating intermediates

Application

1. 1-(2-Hydroxy-3-sulfopropyl)-pyridinium betane is a good nickel plating intermediate which has good leveling power in middle and low current density areas as PPS.2. It also has an outstanding LCD throwing power, which should be used in combination with BEO, PME, PESS, MOSS,saccharin or auxiliary brighteners.

InChI:InChI=1/C8H11NO4S/c10-8(7-14(11,12)13)6-9-4-2-1-3-5-9/h1-5,8,10H,6-7H2

Synthetic route

pyridine (110-86-1) + epichlorohydrin (106-89-8) → 1-(2-hydroxy-3-sulfo-propyl)-pyridinium betaine (3918-73-8)

Conditions	Yield
With sodium metabisulfite; tetrabutylammomium bromide; sodium sulfite In water at 30 - 50℃; under 18751.9 - 26252.6 Torr; Temperature; Pressure; Large scale;	99.1%

pyridine (110-86-1) + 3-chloro-2-hydroxypropane-1-sulfonic acid (107-57-3) → 1-(2-hydroxy-3-sulfo-propyl)-pyridinium betaine (3918-73-8)

Conditions	Yield
at 100℃;
at 100℃;

pyridine (110-86-1) + (+-)-sodium-<3-chloro-2-hydroxy-propane-1-sulfonate> → 1-(2-hydroxy-3-sulfo-propyl)-pyridinium betaine (3918-73-8)

Conditions	Yield
at 150℃;

Upstream product

• 110-86-1 pyridine 
• 106-89-8 epichlorohydrin 
• 107-57-3 3-chloro-2-hydroxypropane-1-sulfonic acid 

Relevant articles and documents

Method for continuously synthesizing PPS-OH

The invention discloses a method for continuously synthesizing PPS-OH. The method comprises the following steps of adding a phase transfer catalyst and sodium sulfite into a hydrosulfite solution or pyrosulfite solution of alkali metal, so as to obtain a mixed solution containing HSO3; simultaneously adding the mixed solution and epichlorohydrin into a first reactor, and generating ring-openingreaction; simultaneously adding a mixed solution of pyridine and a catalyst and a ring-opening reaction product into a second reactor, and reacting to obtain a target product. The method has the advantages that the mixing order and adding order of the raw materials are changed, and the raw materials participating in reaction are simultaneously sent into the corresponding reactor to participate inthe corresponding reaction, so that the generation of side effect is effectively reduced, the selectivity and the conversion rate of reaction are improved, the yield rate and purity of the product are improved, and the requirement of high-end customers in the electroplating industry are met; compared with the intermittent operation of the traditional technology, the reaction time is shortened, the production efficiency is improved, and the method is suitable for industrialized production.