Sinanox® HSA-2NA is a sulfonate derivative primarily used as a high-performance reducing agent and anti-yellowing agent. It effectively retards and inhibits yellowing in polymers (especially in aqueous systems) caused by oxygen, residual monomers (e.g., acrylic acid), or thermal processing. It also enhances reaction activity and reduces monomer residues.
Sinanox® HSA-2NA
(High-Efficiency Reducing & Anti-Yellowing Agent)
Chemical name:Disodium hydroxy(sulfonato)acetate;Acetic acid, 2-hydroxy-2-sulfo-, sodium salt
CAS No.:29736-24-1
Molecular Formula：C2H2Na2O6S
Molecular Structure:
Appearance | White crystalline powder |
Content(wt) | ≥95.0% |
pH Value | 6-8.5 |
Sieve residue | ≤1% |
Moisture (K.F) | ≤1% |
Effective Anti-Yellowing: Significantly inhibits yellowing in polymers caused by oxidation and residual monomers, maintaining product color.
Enhanced Reactivity: Helps reduce residual monomer content in polymers.
Eco-Friendly & Safe: Formaldehyde-free. Reaction by-products are only salts and carbon dioxide, meeting green and environmental requirements.
Excellent Thermal Stability: Remains stable at temperatures up to 200°C, allowing addition in the late stages of drying to protect polymers from thermal-oxidative damage.
Versatile Application: Can be incorporated during production or applied as a solution to the surface of dried polymers to retard aging.
Recommended for aqueous polymer dispersions or solid polymers in the following scenarios:
Aqueous Polymer Systems: Added during synthesis or drying to prevent thermal-oxidative yellowing.
Solid Polymer Processing: Functions as an antioxidant, providing protection at processing temperatures.
Surface Treatment: Its solution can be used to treat the surface of dried polymer products to slow aging.
Low-VOC Emulsion Synthesis: Suitable for environmentally friendly emulsion preparation due to its formaldehyde-free nature.
25 kg/carton or drum (with inner polyethylene bag). Customized packaging is available upon request.
Being kept in dry, clean warehouse with well ventilation.
Avoid exposing to light and heating.
Protecting the product from leakage, rain and insolation during transportation.
We offer a variety of options to help you find the right product for your application
Provide formulation optimization support for water-based/solvent-based systems
Full coverage of REACH, FDA, and GB standards
99.8% on-time delivery rate, 10,000-ton production capacity guarantee
