Acrylic Acid-2-Acrylamido-2-Methylpropane Sulfonic Acid Copolymer AA/AMPS Acrylic Acid AMPS Copolymer CAS 40623-75-4

• Customization: Available
• CAS No.: 40623-75-4
• Formula: (C7h13no4s)X.(C3h4o2)Y
• Model NO.: 30%
• Type: Synthesis Material Intermediates
• Appearance: Liquid
• Quality: Industrial
• Colour: Colorless
• Specification: 30%
• Trademark: JinYu
• Origin: China

Product Description

Product Description

Basic Information

• Product Name: Acrylic Acid-2-Acrylamido-2-Methylpropane Sulfonic Acid Copolymer
• Abbreviation: AA/AMPS Copolymer
• Chemical Formula: (C3H4O2)m⋅(C7H13NO4S)n (m and n are degrees of polymerization, typically m:n = 3:1-4:1)
• CAS Number: 40623-75-4
• Structural Features: Formed by free radical copolymerization of acrylic acid (AA) providing carboxyl groups (−COOH) and 2-acrylamido-2-methylpropane sulfonic acid (AMPS) providing sulfonic acid groups (−SO3H) and amide groups (−CONH2), resulting in a linear polymer with dual functional groups.

Physical Properties

Property	Typical Data
Appearance	Colorless to light yellow transparent liquid (aqueous solution)
Solid Content	30%-40% (common specification for industrial grade)
pH Value	2.0-4.0 (undiluted), adjustable by neutralization
Density	1.10-1.20 g/cm³ (25ºC)
Solubility	Soluble in water, insoluble in organic solvents
Viscosity	50-500 mPa·s (25ºC, increasing with molecular weight)

Chemical Properties

1. Ionic Characteristics:
   • Strong anionic polymer. Carboxyl and sulfonic acid groups dissociate into −COO− and −SO3− in water, providing high charge density and strong anti-electrolyte ability (sulfonic acid groups exhibit better salt resistance than carboxyl groups).
2. Reactivity:
   • Can form complexes with metal ions (e.g., Ca², Mg²) for scale inhibition;
   • Undergoes neutralization or cross-linking reactions with amines or epoxies (requires initiators).
3. Thermal Stability:
   • Decomposition temperature: approximately 280-320ºC. Stable in aqueous solutions up to 100-150ºC (depending on the formulation).

Main Applications

1. Water Treatment Industry:
   • Scale Inhibitor and Dispersant: Used in industrial circulating water and oilfield water injection to inhibit calcium carbonate, calcium sulfate, and calcium phosphate scales, especially suitable for high-hardness and high-alkalinity water quality (scale inhibition efficiency 30%-50% higher than polyacrylic acid).
   • Sludge Conditioner: Improves sludge dewatering performance through charge neutralization.
2. Oilfield Chemistry:
   • Drilling Fluid Dispersant: Reduces mud viscosity, improves stability, and resists salt and calcium contamination.
   • Acidizing Fluid Additive: Mixed with acid fluids to inhibit iron ion precipitation and enhance acidizing effects.
3. Textile and Dyeing:
   • Chelating Agent: Removes metal ions in water to improve dyeing uniformity.
   • Size Dispersant: Improves pigment dispersibility and prevents agglomeration.
4. Coatings and Adhesives:
   • Pigment Dispersant: Used in water-based coatings to enhance pigment wettability and storage stability.
   • Paper Strength Agent: Improves paper strength and tear resistance by adsorbing cellulose fibers.

Advantages and Safety

• Core Advantages:
  • High Cost-Effectiveness: Combines the dual properties of carboxyl and sulfonic acid groups, reducing dosage by 20%-30% compared to single polymers.
  • Resistance to Harsh Environments: Maintains stable scale inhibition performance under high salt (e.g., seawater) and high temperature (≤150ºC) conditions.
  • Biocompatibility: Low toxicity (LD50 > 2000 mg/kg, oral administration to rats), suitable for drinking water treatment (compliant with GB 5749 standards).
• Safety Operations:
  • The undiluted solution is acidic; rinse skin with water if contacted;
  • Store in a cool, dry place, and avoid mixing with strong oxidants or alkaline substances.

Typical Technical Specifications (Industrial Grade)

Item	Specification
Solid Content	≥30.0%
Free Monomers (AA+AMPS)	≤1.0%
Density (20ºC)	1.15±0.05 g/cm³
pH Value (1% Aqueous Solution)	6.0-8.0
Intrinsic Viscosity (30ºC, Pure Water)	0.05-0.30 dL/g (molecular weight adjustment range)

 

Product Parameters

 

Packaging & Shipping

Liquid products	Drum of 5kg ,10 kg ,25 kg ,50 kg 200 kg ,250 kg . 1000 kg IBC drum. TANK with 20 tons ,25 tons .
Solid products	Bag of 1 kg ,2 kg ,5 kg ,25 kg ,500kg ,1000 kg . Drum of 25 kg and 50 kg.

Packaging can be customized according to customer requirements.

Company Profile

Qingdao Jinyu Chemical Co., LTD,which is located in Qingdao City, China, with registered capital of RMB 10 million, is a dynamic chemical import and export enterprise with customer demand as its own responsibility. The founder has been engaged in the chemical industry for more than 20 years. With professional technical and marketing personnel, diversified cooperative factories with synthetic technology and efficient logistics management, we provide services to customers all over the world. After years of hard work, we have selected a number of excellent chemical production cooperative enterprises in China. These enterprises have their own advantages in different chemical synthesis fields. They have passed the strict inspection of suppliers by many customers and formed a long-term and stable strategic partnership with customers. With our partners' excellent equipment, well-trained employees and mature technology, we also continue to provide customers with more products.

Our Advantages