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Chemical Identity: Sodium Allylsulfonate (CAS No. 2495-39-8) Description: Sodium allylsulfonate is an organosulfur compound with the chemical formula C3H5SO3Na. It is a water-soluble salt derived from allyl alcohol and sulfurous acid, commonly used as a monomer in polymerization reactions to produce water-soluble polymers with various applications.

Physical Properties: Description: Sodium allylsulfonate is typically found as a clear to slightly yellow liquid. It is highly soluble in water and exhibits a slightly sulfurous odor. It has a molecular weight of approximately 144.14 g/mol.

Chemical Structure: Description: The chemical structure of sodium allylsulfonate consists of an allyl group (-CH2CH=CH2) attached to a sulfonate group (-SO3Na), forming a water-soluble salt. It contains a double bond in the allyl group, providing reactivity for polymerization reactions.

Synthesis Method: Description: Sodium allylsulfonate is synthesized through the reaction between allyl alcohol and sodium bisulfite under alkaline conditions. The allyl alcohol undergoes sulfonation to form sodium allylsulfonate, which can be purified and isolated for further use.

Applications in Polymer Chemistry: Description: Sodium allylsulfonate is primarily used as a monomer in the synthesis of water-soluble polymers such as poly(allyl sulfonate) (PAS) and its copolymers. These polymers find applications in various industries, including water treatment, textiles, and personal care products.

Water Treatment Applications: Description: Poly(allyl sulfonate) derived from sodium allylsulfonate is used in water treatment processes as a flocculant and scale inhibitor. It helps to remove suspended particles and ions from water, as well as prevent scale formation in industrial equipment.

Textile Applications: Description: Sodium allylsulfonate-based polymers are employed in the textile industry as sizing agents, dyeing assistants, and finishing agents. They improve the color fastness, softness, and durability of fabrics, as well as enhance dye penetration and adhesion.

Personal Care Products: Description: Sodium allylsulfonate polymers are used in personal care products such as shampoos, conditioners, and skin care formulations as viscosity modifiers, emulsifiers, and film-forming agents. They provide conditioning effects and stabilize emulsions in cosmetic formulations.

Toxicological Considerations: Description: Sodium allylsulfonate is generally regarded as safe for use in polymerization reactions and industrial applications. However, direct contact with concentrated solutions or prolonged exposure may cause skin and eye irritation. Proper handling procedures should be followed to minimize risks.

Regulatory Status: Description: Sodium allylsulfonate is not listed as a regulated substance by major regulatory agencies such as the FDA in the United States or the European Chemicals Agency (ECHA) in the European Union. However, its use in specific applications may be subject to regulations and guidelines governing polymer additives and industrial chemicals.