Product Description
Definition
2-Acrylamido-2-methylpropanesulfonic acid, commonly abbreviated as AMPS, is a crucial monomer in the chemical industry. With the molecular formula C7H13NO4S, its unique structure incorporates a reactive vinyl group (-CH=CH2), an amide group (-CONH2), and a sulfonic acid group (-SO3H). This combination endows AMPS with distinct properties, making it a versatile building block for various polymers.
Physical and Chemical Properties
Physical State
AMPS typically exists as white crystalline powder, featuring a faint acidic odor. Its solid state at room temperature facilitates easy handling and storage in industrial settings.
Solubility
It exhibits excellent solubility in water, with a solubility of 150 g/100 g at 25 °C. This high water solubility is attributed to the strong hydrophilic nature of the sulfonic acid and amide groups. Additionally, AMPS is soluble in dimethylformamide (DMF), while being only slightly soluble in methano l and ethanol. It is insoluble in non-polar solvents like aceton e and toluen e.
pH and Acidity
AMPS is a strong acid. The pH of its aqueous solution is concentration-dependent. In a 0.1% (by weight) aqueous solution, the pH is approximately 2.6. This acidity is a result of the dissociation of the sulfonic acid group, which readily donates a proton in solution.
Stability
In its dry monomer form, AMPS remains stable at normal temperatures. However, its aqueous solutions are highly prone to polymerization. To counteract this, inhibitors are often added to prevent self-polymerization. The sodium salt of AMPS, on the other hand, shows greater stability in aqueous solutions, especially when the pH is above 9, demonstrating good resistance to hydrolysis.
Polymerization
AMPS can undergo both homopolymerization, forming polymers composed solely of AMPS units, and copolymerization with a wide range of monomers. The presence of the vinyl group enables it to participate in addition polymerization reactions. During polymerization, the double bond in the vinyl group breaks, allowing monomers to link together. The polymerization heat of AMPS in water averages around 22 kcal/mol, and both water and DMF can serve as polymerization media.
Production Methods
The synthesis of AMPS primarily involves the reaction of acrylonitri le, isobutylen e, and fuming sulfuric acid. In a typical process, fuming sulfuric acid is added to a mixture of acrylonitri le and isobutylen e. This reaction occurs in the presence of various additives, which play roles in promoting the reaction, controlling the reaction rate, and ensuring product quality. The overall reaction can be represented as follows:
\(CH2=CHCN + (CH3)2C=CH2 + H2SO4 (fuming) \xrightarrow[additives]{reaction conditions} C7H13NO4S\)
Storage
Proper storage of AMPS is crucial to maintain its quality. It should be stored in a cool, dry place away from direct sunlight and heat sources. Since the aqueous solution is prone to polymerization, if stored in solution form, appropriate inhibitors must be added, and the storage temperature should be carefully controlled. Additionally, it should be kept away from incompatible substances such as strong oxidizers, bases, and metal powders to prevent chemical reactions.
Market Information
The global AMPS market has been witnessing steady growth in recent years. This growth is driven by its increasing applications across multiple industries. In regions with significant oil and gas production, such as the Middle East and North America, the demand for AMPS in oilfield chemicals is high. Asia-Pacific, especially China and India, is also a major market due to the rapid development of industries like textiles, paper, and water treatment. The market is highly competitive, with several key players investing in research and development to improve production processes and develop new applications.
Downstream Industry Chain
Polymer Production
AMPS serves as a fundamental monomer in the production of various polymers. Its copolymerization with other monomers leads to the creation of specialty polymers with enhanced properties. For example, copolymers of AMPS with acrylamid e are widely used in the oil and water treatment industries. These polymers can improve the performance of drilling fluids, enhance the efficiency of water purification processes, and act as effective flocculants.
Chemical Additives
In the manufacturing of chemical additives, AMPS is used to impart specific properties. In the production of surfactants, AMPS can be incorporated to enhance their anionic nature, improving their performance in applications such as emulsification and dispersion.
Detailed Photos
Product Parameters
| Item |
Specification |
Result |
| Appearance |
White to off-white crystalline powder |
Passed |
| Assay (AMPS content) |
≥ 98.0% |
98.5% |
| Water Content |
≤ 0.5% |
0.3% |
| Iron (Fe³+) Content |
≤ 5 ppm |
2 ppm |
| Sulfate (SO4²-) Content |
≤ 0.5% |
0.3% |
| pH (5% solution at 25°C) |
2.0 - 3.0 |
2.4 |
| Residue on Ignition |
≤ 0.5% |
0.2% |
| Color (APHA) |
≤ 100 |
60 |
| Water Insoluble |
≤ 0.1% |
0.02% |
| Density (g/cm³, bulk) |
Report only |
0.85 g/cm³ |
Application
1.Oil and Gas Industry
Drilling Fluids: AMPS copolymers are added to drilling fluids to improve their rheological properties. They can enhance the viscosity and stability of the fluids, ensuring efficient drilling operations, especially in high-temperature and high-pressure environments.
Enhanced Oil Recovery: Polymers containing AMPS are used as flooding agents in enhanced oil recovery processes. They can increase the viscosity of the injected water, improving the sweep efficiency and ultimately enhancing oil recovery rates.
2.Water Treatment
Flocculants: AMPS-based polymers act as effective flocculants in water treatment plants. They can help in the aggregation of suspended particles in wastewater, facilitating their separation and removal, thus improving water quality.
Scale and Corrosion Inhibitors: AMPS copolymers can also function as scale and corrosion inhibitors. In industrial cooling water systems, they prevent the formation of scale deposits on pipes and equipment surfaces, while also inhibiting corrosion, thereby extending the lifespan of the infrastructure.
3.Textile Industry
Dyeing Auxiliaries: AMPS is used in the synthesis of dyeing auxiliaries. It can improve the dye uptake and color fastness of synthetic fibers such as polyester and polyamide. By modifying the surface properties of the fibers, AMPS-containing additives enhance the interaction between the dye and the fiber, resulting in more vibrant and long-lasting colors.
Antistatic Agents: Polymers derived from AMPS can be used as antistatic agents in textiles. They help to dissipate static charges on the fabric surface, reducing problems such as fabric clinging and attracting dust.
4.Paper Industry
Strength Additives: AMPS-based polymers are added to paper pulp to improve the strength of the final paper product. They can enhance the bonding between cellulose fibers, resulting in stronger and more durable paper.
Retention and Drainage Aids: These polymers also act as retention and drainage aids in the papermaking process. They help in retaining fillers and fine particles in the paper web, while also improving the drainage of water from the pulp, increasing the efficiency of the papermaking process.
Product List
Certifications
Company Profile
Shandong Jiuchong Chemical Company Limited was founded in 2016, which is located in Weifang City, Shandong Province, China. We have 228 square meters of office space. Now Jiuchong chemical is a large modern international chemical enterprise with more than 28 series. Since our establishment, the company has gradually established and improved a sound supply chain system, quality monitoring system and service system, ensuring products quality and service.
At the same time, relying on our own geographical location and resource advantages, our company is committed to the optimization of a variety of chemical supply chain, including magnesium chloride, sodium metabisulfite, sodium bicarbonate, calcium chloride, magnesium sulfate, polyaluminium chloride, aluminium sulfate, industrial salt, soda ash etc.
Our products are sold well in 288 domestic cities and more than 36 foreign countries. Now the company has won the praise and trust of domestic and foreign customers. Based on stable quality and output, good team service and staff efforts, we will continue to develop domestic and foreign markets.
Jiuchong chemical takes "integrity, innovation and development" as the concept, puts integrity in the priority position in serving customers, and guarantees high quality products and satisfactory cooperation for customers experience. Your satisfaction is our driving force. Quality is the soul of enterprise and that is what we have always done. In the future, Shandong Jiuchong Chemical Company Limited hopes to build a brilliant tomorrow with you!
FAQ
Q1: Is this product safe to handle?
A: Yes, it is generally considered safe and non-toxic under normal handling conditions. However, we recommend wearing gloves and a mask to avoid prolonged skin or inhalation exposure, especially in large-scale use.
Q2: What is the shelf life of this product?
A: The shelf life is 2 years when stored in a cool, dry, and well-ventilated area. It should be kept away from moisture to prevent caking or decomposition.
Q3: What packaging options are available?
A: Standard packaging includes 25kg or 50kg plastic woven bags with inner liners. We also offer jumbo bags and customized bag marks according to your requirements.
Q4: Can you provide documents such as COA, MSDS, or TDS?
A: Absolutely. We can provide Certificate of Analysis (COA), Material Safety Data Sheet (MSDS), Technical Data Sheet (TDS), and other documents as needed for customs or technical review.
Audited Supplier 
){kind=link}