Sodium 3-mercaptopropanesulphonate CAS 17636-10-1

Description

Sodium 3-mercaptopropanesulphonate, CAS 17636-10-1, is a chemical compound typically available as a white to light yellow solid or powder. It is an organosulfur compound containing both a thiol and a sulfonate group. This substance is primarily utilized in specialized industrial applications and laboratory research. It is recognized for its role as an additive in electroplating processes and as a reagent in chemical synthesis.

Properties

Property	Value
CAS Number	17636-10-1
Chemical Name	Sodium 3-mercaptopropanesulphonate
Alternate Names	Sodium 3-mercapto-1-propanesulfonate, MPS
Molecular Formula	C3​H7​NaO3​S2​
Molecular Weight	Approximately $178.20\text{ g/mol}$ to $179.21\text{ g/mol}$
Appearance	White to light yellow solid/powder
Melting Point	Approximately $220\text{ °C}$ (often with decomposition)
Solubility	Soluble in water
Storage Temperature	Room temperature, though cool and dark place often recommended

Usage

Sodium 3-mercaptopropanesulphonate is primarily used in the following areas:

• Electroplating Additive: It serves as a brightening agent in copper electroplating baths, particularly for the production of printed circuit boards (PCBs). Its addition helps to improve the brightness, ductility, and corrosion resistance of the copper layer. For example, it can be combined with polyethers and non-ionic surfactants to achieve a uniform and high-quality copper deposit.
• Chemical Synthesis: It is employed as an intermediate or reagent in various chemical syntheses and laboratory research. This includes its use in the development of new materials or compounds where its thiol or sulfonate functionalities are beneficial.
• Research Applications: It has been investigated for potential use in areas such as the synthesis of substituted phthalocyanines for photodynamic therapy (PDT).

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