CH2CHCH2SO3

CH2CHCH2SO3 refers to the chemical structure of a vinyl sulfonic acid group, specifically the anion derived from the compound vinylsulfonate. This functional group consists of a vinyl moiety (CH2=CH–) attached to a sulfonate group (–SO3–). The fully protonated form, known as vinylsulfonic acid (C2H3SO3H), is a simple organic sulfonic acid.

Vinylsulfonic acid and its derivatives are notable for their reactivity and utility in polymer chemistry. The vinyl group allows for polymerization, enabling the formation of polymers with sulfonic acid functionalities. These polymers are often used in applications requiring ion exchange, such as water treatment, desalination, and as electrolytes in fuel cells. The sulfonic acid group imparts strong acidic properties, making these materials effective in proton-conducting applications.

The synthesis of vinylsulfonic acid typically involves the sulfonation of ethylene or related reactions. It is often used as a monomer in the production of sulfonated polymers, such as polyvinylsulfonic acid (PVS), which is a linear polymer with repeating sulfonic acid groups. These polymers exhibit high water solubility and thermal stability, contributing to their widespread use in industrial and scientific research.

In addition to its role in polymer science, vinylsulfonic acid and its derivatives have applications in bioconjugation, drug delivery systems, and as components in superacidic catalysts. The versatility of the sulfonic acid group, combined with the polymerizable vinyl functionality, makes this compound a key building block in various advanced materials and chemical processes. Safety considerations during handling include proper ventilation and protective equipment due to its potential irritant properties.