TERSPERSE 2612

Product Details

CasNo： 26677-99-6

MF： (C4H4O4)n.(C3H4O2)n

Appearance： liquid

Delivery Time： 15 days

Packing： 200kg/drum

Purity： 99%

1. Basic Attributes

• Product Type: Polycarboxylate-based block copolymer dispersant, with the core component being an acrylic acid-maleic anhydride block copolymer derivative. It achieves dispersion and stabilization of nanoscale particles (D50≤1μm) through synergistic steric hindrance and electrostatic repulsion effects, suitable for high-solid-content (≥70%) aqueous suspension systems. It is particularly applicable in pesticide nano-suspensions (nano-SC), high-end water-based coatings, and lithium battery electrode slurries.
• Key Certifications: Complies with EU REACH Regulation and China’s HG/T 4575-2013 Standard for Dispersants Used in Pesticide Suspensions. It contains no residues of nonylphenol (NP) or alkylphenol ethoxylates (APE), with a biodegradation rate of ≥85%. Some specifications meet the "low toxicity" and "low irritation" classifications in EU EC 1272/2008 CLP Regulation.
• Applicable Systems: Compatible with neutral to weakly alkaline (pH 6.0-10.0) aqueous systems, highly tolerant to high electrolytes (e.g., 20% potassium sulfate solution). It can be used stably in environments with temperatures ranging from -10℃ to 55℃. It is not suitable for strongly acidic (pH < 5) or strongly reducing systems.

2. Core Physicochemical Properties 

3. Functions and Typical Application Scenarios

• Core Functions:

  1. Nanoscale Dispersion and Stabilization: Carboxylic acid groups adsorb on nanoscale particle surfaces, and polyether segments construct a steric hindrance layer. This allows nanoscale particles (D50 ≤1μm) to stably suspend for 150 days without sedimentation. In pesticide nano-suspensions (nano-SC), the particle size growth is ≤3% after thermal storage (54℃×14 days), far superior to traditional dispersants (particle size growth ≥8%).
  2. High Solid Content and Low Viscosity Adaptation: In aqueous systems, it can increase the solid content to over 75% while controlling the system viscosity below 1000 mPa·s (25℃, 20rpm), reducing solvent usage and improving product performance (e.g., pesticide efficacy, coating hiding power).
  3. Enhanced Salt and Shear Resistance: In 20% high-salt solutions, the dispersion performance retention rate is ≥90%. It can withstand ultra-high-speed stirring (5000r/min) and nanogrinding shear forces, avoiding secondary particle agglomeration and suitable for nanomaterial industrial production processes.

• Typical Application Fields:

  • Agrochemical Industry: Used in formulations such as 5% abamectin nano-SC and 10% lambda-cyhalothrin nano-SC. The recommended addition amount is 3%-6%, which can increase pesticide bioavailability by more than 30% and extend the efficacy duration.
  • High-End Water-Based Coatings Industry: As a dispersant for nanoscale pigments such as titanium dioxide and aluminum oxide, with an addition amount of 1%-3%. It can improve the weather resistance of coatings by 50% and achieve a hardness of above 5H, suitable for high-end fields such as aerospace and automotive.
  • Lithium Battery Materials Industry: Used in lithium battery cathode material (e.g., lithium iron phosphate, ternary material) slurries, with an addition amount of 2%-5%. It can optimize electrode porosity and ion conductivity, increasing battery cycle life by more than 20%.

4. Usage Specifications and Precautions

• Recommended Addition Amount: 3%-6% in the agrochemical field, 1%-3% in the high-end coatings field, and 2%-5% in the lithium battery slurry field. It is recommended to determine the optimal ratio through small-scale tests (e.g., sedimentation volume ratio, particle size distribution test). Excessive addition may lead to increased foam in the system, which can be adjusted by adding an organic silicon defoamer (addition amount 0.1%-0.3%).
• Compatibility: Can be compounded with nonionic surfactants (e.g., fatty alcohol polyoxyethylene ether) and anionic surfactants (e.g., sodium dodecylbenzene sulfonate) to enhance dispersion effects. Avoid mixing with high-concentration cationic surfactants (e.g., cetyltrimethylammonium bromide) to prevent precipitation.
• Storage Requirements: Seal and store in a cool, ventilated place (5-30℃), avoiding direct sunlight and freezing; the unopened shelf life is 24 months, and it should be used within 6 months after opening. The remaining product needs to be resealed to prevent moisture.
• Safety: The acute oral toxicity LD50 (rat) >5000mg/kg, classified as practically non-toxic; skin irritation test (rabbit) shows no irritation. It is recommended to wear acid and alkali-resistant gloves during operation to avoid long-term skin contact.