Sodium Allyl Sulfonate (SAS)
Advantages
- Excellent water solubility and dispersion capacity, easy to formulate into water treatment agents.
- High copolymerization activity, readily reacts with acrylamide and acrylic acid to produce efficient scale inhibitors and flocculants.
- Cost-effective for conventional circulating water and general industrial water systems.
Disadvantages
- Prone to self-polymerization at high temperature, which shortens the service life of liquid formulations.
- Weak tolerance to extreme conditions, not ideal for high-hardness and high-salinity wastewater.
- Poor stability during long-term storage of finished water treatment products.
Sodium Methallyl Sulfonate (SMAS)
Advantages
- Great thermal stability and low self-polymerization tendency, suitable for high-temperature water systems.
- Strong adaptability to high hardness, high salinity and complex water quality, ideal for harsh working conditions.
- Contributes to stable performance and longer shelf life of copolymerized scale inhibitors.
Disadvantages
- Slightly lower water solubility than SAS.
- Higher raw material cost, not economical for ordinary low-concentration water treatment scenarios.
- Moderate polymerization activity, requiring optimized formula when copolymerized with common monomers.
Short Summary
SAS works well for normal water quality with low cost, but fails in high temperature and high salinity.
SMAS performs steadily under harsh water conditions, yet it is more expensive.
