Sodium Methallyl Sulfonate (SMAS / MAS)
Sodium Methallyl Sulfonate (SMAS / MAS) Product Introduction
CAS No.: 1561-92-8
Molecular Formula: C₄H₇NaO₃S
Molecular Weight: 158.15 g/mol
1. Product Overview
Sodium Methallyl Sulfonate (SMAS) is a high-purity, anionic monomer featuring a reactive allylic double bond and a strongly hydrophilic sulfonate group (-SO₃Na). It appears as a white crystalline powder/flake, highly soluble in water, and stable under normal storage conditions.
Our export-grade SMAS is manufactured under strict quality control, delivering ≥99.5% purity with ultra-low impurities (Cl⁻, SO₄²⁻, Fe, water-insoluble matter), making it ideal for high-performance polymer synthesis across global industries.
2. Key Properties
| Item | Specification |
| Appearance | White crystalline powder / flake |
| Purity | ≥99.5% |
| Melting Point | 270–280 °C |
| Solubility | Freely soluble in water (523 g/L at 20 °C); slightly soluble in ethanol |
| pH (1% aqueous solution) | 6–8 |
| Chloride (Cl⁻) | ≤0.03% |
| Sulfate (SO₄²⁻) | ≤0.03% |
| Iron (Fe) | ≤0.2 ppm |
| Dry Loss | ≤0.3% |
3. Application Fields & Core Uses
Core Application Summary (For Quick Reference)
To help you quickly grasp the most in-demand uses of SMAS for European and American markets, we summarize the core applications as follows:
- Construction (PCE): Core chain transfer agent for polycarboxylate superplasticizers, complying with EU/US construction standards, widely used in high-rises, bridges, and other large projects.
- Water Treatment: Key monomer for corrosion & scale inhibitors, suitable for industrial circulating water, boiler water, and desalination, meeting EU/US environmental standards.
- Oilfield: Ideal for drilling fluid additives, with high-temperature (200 °C) and salt tolerance (15% NaCl), adapting to harsh European and American oilfield conditions.
Sodium Methallyl Sulfonate (SMAS) is a versatile anionic monomer with excellent reactivity and hydrophilicity, widely applied in multiple industrial fields globally. Its unique molecular structure makes it an indispensable raw material for high-performance polymers, additives, and specialty chemicals. The core application fields (most in-demand for European and American clients) are as follows:
Sodium Methallyl Sulfonate (SMAS) is a versatile anionic monomer with excellent reactivity and hydrophilicity, widely applied in multiple industrial fields globally. Its unique molecular structure makes it an indispensable raw material for high-performance polymers, additives, and specialty chemicals. The core application fields (most in-demand for European and American clients) are as follows:
3.1 Construction Industry: Polycarboxylate Superplasticizers (PCE)
Core Application 1: Construction Industry (Polycarboxylate Superplasticizers, PCE) – As a core chain transfer agent and performance modifier in PCE synthesis, SMAS is highly sought after by European and American construction enterprises. It effectively enhances cement particle dispersion and retention, reduces superplasticizer dosage, and significantly improves concrete water reduction and slump retention. The PCE products made with SMAS are odorless, non-toxic, and high-efficiency, fully complying with strict EU/US construction standards for concrete workability and durability, and are widely used in high-rises, bridges, highways, and dams.
3.2 Water Treatment Industry: Corrosion & Scale Inhibitors
Core Application 2: Water Treatment Industry (Corrosion & Scale Inhibitors) – A key monomer for high-performance water treatment chemicals, SMAS is widely used in European and American industrial circulating water systems, boiler water treatment, and desalination projects. Copolymerized with acrylic acid, maleic anhydride, etc., it produces efficient inhibitors with excellent scale inhibition for calcium phosphate, calcium carbonate, and zinc salts, maintaining stability under high salinity, high temperature, and high pH. It helps enterprises reduce equipment corrosion, improve water utilization, and meet EU/US environmental emission standards.
3.3 Oilfield Industry: Drilling & Production Additives
Core Application 3: Oilfield Industry (Drilling & Production Additives) – Ideal for harsh European and American oilfield conditions (deep wells, high-salinity reservoirs), SMAS is a key raw material for drilling fluid additives, dispersants, and fluid loss controllers. With excellent high-temperature resistance (up to 200 °C) and salt tolerance (15% NaCl), it enhances drilling fluid stability, reduces fluid loss, prevents wellbore collapse, and improves oil recovery efficiency, favored by global oil exploration enterprises.
3.4 Textile Industry: Acrylic Fiber Production
As the third monomer for polyacrylonitrile (PAN) fiber production, SMAS can significantly improve the performance of acrylic fibers. It enhances the dyeability, heat resistance, softness, and color fastness of acrylic fibers, solving the problems of poor dyeing uniformity and dull color of traditional acrylic fibers. The acrylic fibers prepared with SMAS have bright colors, soft hand feel, and good textile processability, which are widely used in the production of high-grade textiles, clothing, and home textiles in European and American markets, meeting the high requirements of consumers for textile quality.
3.5 Polymer Industry: Coatings, Adhesives & Specialty Polymers
In the polymer industry, SMAS is used as a functional monomer to modify acrylic resins, coatings, and adhesives. It can improve the water solubility, adhesion, UV resistance, and thermal stability of products, making coatings and adhesives have better weather resistance and durability. In addition, SMAS is also used in the production of reactive emulsifiers, flocculants, superabsorbent polymers, and other products, which are widely applied in environmental protection, daily chemicals, and other fields.
3.6 Other Fields
SMAS is also used in the production of ion exchange resins, electroplating additives, and pharmaceutical intermediates. Its excellent reactivity and functional properties make it have broad application prospects in more specialty chemical fields, providing customized solutions for European and American customers in different industries.
4. Our Advantages
✅ High Purity: ≥99.5% assay, tight impurity control
✅ Stable Quality: Consistent batch-to-batch performance
✅ Industrial Scale: Large production capacity to meet bulk export demands
✅ Flexible Packaging: 20 kg, 25 kg PP/PE bags; 500 kg jumbo bags; custom options
✅ Global Compliance: Meets EU, US, and international chemical standards
✅ Technical Support: Custom formulations and application guidance available
✅ Reliable Logistics: On-time delivery with full export documentation (COA, MSDS, etc.)
5. Safety & Handling
– SMAS is a general chemical (non-hazardous for transport under most regulations)
– Avoid contact with skin/eyes; use in well-ventilated areas
– Store in dry, cool, sealed conditions; protect from moisture and heat
6. Ordering Information
– MOQ: 10–25 metric tons (negotiable for trial orders)
– Lead Time: 15–30 days
– Payment: T/T, L/C
– Port of Shipment: Main Chinese ports (Qingdao)
Contact Us
For spec sheets, COA, MSDS, samples, or pricing, please contact our export sales team:
– Email: biz@chevyoung.com
– Phone: +8613854421376
– Website: www.chevyoung.com
We look forward to building long-term partnerships with global clients, delivering reliable quality and professional service for your polymer and specialty chemical needs.
