AMPS (2-Acrylamido-2-Methylpropane Sulfonic Acid) – High-Performance Functional Monomer
Product Overview
AMPS, chemically known as 2-Acrylamido-2-Methylpropane Sulfonic Acid (CAS No. 15214-89-8), is a highly reactive, hydrophilic functional monomer. As a leading EPS additive solution provider, Senthos supplies premium-grade AMPS in both powder and liquid (sodium salt) forms. Due to its unique sulfonic acid group, AMPS offers exceptional thermal stability, hydrolytic resistance, and divalent ion tolerance, making it an essential component in the synthesis of high-end water-treatment polymers, oilfield chemicals, and specialized EPS dispersants.
Detailed Technical Specifications (TDS)
We ensure our AMPS maintains ultra-high purity to ensure consistent polymerization results:
| Property | Technical Standard (Powder) |
| Product Name | AMPS Monomer |
| CAS Number | 15214-89-8 |
| Molecular Formula | C7H13NO4S |
| Appearance | White Crystalline Powder |
| Assay (Purity) | ≥ 98.0% / ≥ 99.0% |
| Melting Point | 185°C (with decomposition) |
| Acid Value (mg KOH/g) | 268 – 278 |
| Water Content | ≤ 1.0% |
| Iron Content | ≤ 5 ppm |
Key Performance & Industrial Applications
Exceptional Stability: The sulfonic acid group in AMPS provides strong anionic character and high hydrophilicity. It remains stable under high-temperature and high-salt conditions where other monomers might fail.
Specialized Dispersant Synthesis: In the EPS industry, AMPS is frequently used to copolymerize with other monomers to create high-efficiency suspension stabilizers (dispersants), ensuring uniform bead size distribution.
Broad Chemical Compatibility: It copolymerizes easily with acrylamide, acrylic acid, and various vinyl monomers, offering versatile molecular design options for technical polymers.
Enhanced Scale Inhibition: Its unique structure provides excellent calcium carbonate and calcium sulfate scale inhibition in cooling water and oilfield water injection systems.
Packaging, Storage & Safety
Packaging: Standard 25kg moisture-proof bags or 500kg/1000kg jumbo bags.
Storage Requirements: Store in a cool, dry, and dark warehouse. AMPS is sensitive to moisture and light. Keep containers tightly sealed to prevent spontaneous polymerization. Consequently, keep away from strong oxidizers and alkalis.
Shelf Life: 12 months under recommended storage conditions.
