1. Product Identification & Key Properties
Sodium Methallyl Sulfonate (SMAS) is a high-performance anionic vinyl monomer with stable performance in harsh environments.
- CAS No.: 1561-92-8
- Molecular formula: C₄H₇NaO₃S
- Appearance: white crystalline solid
- Solubility: highly soluble in water
- Purity: ≥99.5% (polymer grade)
SMAS contains both polymerizable double bond and sulfonate group, providing excellent hydrophilicity, thermal stability and salt resistance — ideal for high-TDS, high-temperature conditions in the Middle East.
2. Main Applications
SMAS is widely used as a critical comonomer and functional additive in global industrial chains:
- Acrylic fiber: improves dyeability, heat resistance and spinning stability.
- Water treatment: used in antiscalants, dispersants and flocculants for cooling water and wastewater.
- Oilfield chemicals: applied in EOR polymers, drilling fluid additives and scale inhibitors.
- Construction chemicals: improves slump retention and durability in PCE superplasticizers.
- Coatings & papermaking: enhances adhesion and dispersion stability.
3. Field-Proven Cases in the Middle East
SMAS has been widely validated in large-scale projects across Saudi Arabia, UAE, Iraq and Kuwait, showing outstanding performance under high salt, high temperature and desert conditions.
3.1 Oilfield EOR & Produced Water Treatment
In Saudi Arabia and Iraq giant oilfields, SMAS-based copolymers are used in EOR polymers to improve sweep efficiency and resist high salinity. SMAS additives also effectively control scale and reduce filtration loss in produced water reinjection systems. In ADNOC and major Iraqi oilfields, SMAS chemicals help achieve stable long-term injection and reduce operating costs.
3.2 Seawater Desalination
In Saudi Arabia, UAE and Kuwait large-scale desalination plants, SMAS-derived antiscalants are used in RO and thermal desalination systems. They effectively inhibit CaCO₃ and CaSO₄ scaling in high-TDS brine, reduce membrane fouling, extend cleaning cycles and improve water production efficiency.
3.3 Mega Construction & Infrastructure
In UAE, Qatar and Saudi Arabia high-speed roads, airports and landmark projects, SMAS-modified PCE superplasticizers provide stable slump retention even at 45–50°C. The concrete has better chloride and sulfate resistance, extending service life in coastal and desert environments.
3.4 Industrial Water & Petrochemical Cooling Systems
In petrochemical zones in Dubai and Riyadh, SMAS copolymers are used in cooling water treatment to achieve high-efficiency scale inhibition and corrosion control, supporting stable operation under high hardness and high temperature.
4. Quality & Supply
Standard polymer-grade SMAS for global markets:
- Assay: ≥99.5%
- Moisture: ≤0.5%
- Chloride: ≤100 ppm
- Iron: ≤10 ppm
Packaging: 25 kg bags / jumbo bags with moisture-proof sealing. It is suitable for sea and land transportation and widely supplied to Europe, North America and the Middle East.
5. Safety & Compliance
SMAS is low-hazard and compliant with EU REACH, GHS and Middle East environmental regulations. Users should wear protective equipment and store in dry, cool and ventilated conditions. Please refer to SDS for detailed operation guidelines.
6. Conclusion
Sodium Methallyl Sulfonate (CAS 1561-92-8) is a high-performance monomer with excellent salt resistance, heat resistance and polymerization activity. It plays an important role in oilfield, desalination, water treatment and construction in the Middle East. For European, American and MENA industrial users, selecting high-purity SMAS can improve product stability, reduce failure risk and support long-term reliable operation.
