Delving into the chemical intricacies of industrial materials is crucial for innovation and efficient production. Sodium Acrylate, identified by its CAS number 7446-81-3, is a fundamental organic compound whose chemical properties and synthesis pathways are key to its widespread use. As a manufacturer and supplier of high-quality chemicals, we provide insights into the chemistry behind Sodium Acrylate, enabling procurement managers and R&D professionals to make informed decisions when sourcing this vital intermediate.

Chemical Structure and Properties of Sodium Acrylate

Sodium Acrylate, with the molecular formula C3H3NaO2, is the sodium salt of acrylic acid. It possesses a vinyl group (C=C) and a carboxylate group (-COO-) attached to a three-carbon chain. This structure dictates its reactivity and properties:

  • Reactivity: The vinyl group makes Sodium Acrylate highly susceptible to radical polymerization. This allows it to form long chains, and when cross-linked, creates networks characteristic of superabsorbent polymers.
  • Water Solubility: As a salt, Sodium Acrylate is soluble in water, releasing sodium ions and acrylate anions. This solubility is essential for solution polymerization techniques and for the osmotic swelling mechanism in SAPs.
  • Physical Appearance: Typically, it is supplied as a white to off-white crystalline powder.
  • Melting Point: It exhibits a high melting point, often decomposing before melting completely, typically reported as >300 °C.

Synthesis Methods for Sodium Acrylate

The industrial production of Sodium Acrylate primarily relies on straightforward and efficient chemical reactions:

  1. Acid-Base Neutralization: The most common and economically viable method involves the direct neutralization of acrylic acid with a sodium base, typically sodium hydroxide (NaOH) or sodium carbonate (Na2CO3). The reaction is straightforward:

    CH2=CHCOOH (Acrylic Acid) + NaOH (Sodium Hydroxide) → CH2=CHCOONa (Sodium Acrylate) + H2O (Water)

    This process can be carried out in aqueous solution, followed by drying or further processing to obtain the solid product. This method is favored by manufacturers for its high yield and purity control.
  2. Esterification and Hydrolysis: Alternatively, it can be produced from esters of acrylic acid. For example, methyl acrylate can be reacted with sodium hydroxide in a saponification reaction, followed by neutralization if needed. However, direct neutralization is generally more efficient for industrial-scale production.

Why Source from a China Manufacturer?

For businesses requiring reliable access to Sodium Acrylate, partnering with established Chinese manufacturers offers distinct advantages. Our facilities are equipped for large-scale synthesis, ensuring we can meet the demands of industrial clients. We adhere to strict quality control measures throughout the synthesis process to guarantee the purity and consistency of our Sodium Acrylate. Furthermore, our direct manufacturing capabilities allow us to offer competitive pricing, making it easier for businesses to manage their procurement costs.

If your application requires high-quality Sodium Acrylate, we invite you to inquire about our product specifications, pricing, and supply capabilities. As a dedicated chemical supplier, we are committed to providing the essential building blocks your industry needs, backed by technical expertise and reliable service.