TERSPERSE 2210

Product Details

CasNo： 36290-04-7

MF： (C10H8O3S)n.(CH2O)n.xNa

Appearance： liquid

Delivery Time： 15 days

Packing： 200kg/drum

Purity： 99%

1. Basic Attributes

• Product Type: Alkylnaphthalene sulfonate formaldehyde condensate-based polymeric dispersant, with the core component being a branched alkylnaphthalene sulfonate sodium formaldehyde condensate. It achieves particle dispersion and stabilization through synergistic electrostatic repulsion and steric hindrance effects, suitable for high-solid-content (≥65%) aqueous suspension systems. It is particularly applicable in pesticide suspensions (SC), water-based coatings, and ceramic 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 ≥80%. 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 6.5-10.5) aqueous systems, highly tolerant to high electrolytes (e.g., 15% potassium chloride solution). It can be used stably in environments with temperatures ranging from -5℃ to 50℃. It is not suitable for strongly acidic (pH < 5) or strongly oxidizing systems.

2. Core Physicochemical Properties

3. Functions and Typical Application Scenarios

• Core Functions:

  1. Superior Dispersion and Stabilization: Sulfonate sodium groups adsorb on particle surfaces to form an electrostatic double layer, and branched alkyl chains construct a steric hindrance barrier. This allows particles (D50 ≤3μm) to stably suspend for 120 days without sedimentation. In pesticide suspensions (SC), the particle size growth is ≤4% after thermal storage (54℃×14 days), far superior to traditional lignin dispersants (particle size growth ≥10%).
  2. Viscosity Reduction and High Solid Content Adaptation: In aqueous systems, it can increase the solid content to over 70% while controlling the system viscosity below 1500 mPa·s (25℃, 20rpm), reducing solvent usage, lowering product transportation and packaging costs, and improving production efficiency.
  3. Salt and Shear Resistance: In 15% high-salt solutions, the dispersion performance retention rate is ≥85%. It can withstand high-speed stirring (3000r/min) and grinding shear forces, avoiding secondary particle agglomeration and suitable for large-scale industrial production processes.

• Typical Application Fields:

  • Agrochemical Industry: Used in formulations such as 50% pyraclostrobin SC and 40% glufosinate-ammonium SC. The recommended addition amount is 2.5%-5%, which can replace traditional naphthalene sulfonate formaldehyde condensates (e.g., NNO) to improve the thermal storage stability and efficacy duration of formulations.
  • Water-Based Coatings Industry: As a dispersant for pigments such as titanium dioxide and calcium carbonate, with an addition amount of 0.8%-2%. It can reduce grinding time by more than 30%, improve the hiding power and weather resistance of coatings, and avoid "floating and blooming" phenomena in paint films.
  • Ceramic and Battery Materials Industry: Used in ceramic slurries (e.g., alumina slurry) and lithium battery cathode materials (e.g., ternary material) slurries, with an addition amount of 1.5%-3%. It can reduce slurry viscosity, improve particle dispersion uniformity, and optimize product sintering density and electrochemical performance.

4. Usage Specifications and Precautions

• Recommended Addition Amount: 2.5%-5% in the agrochemical field, 0.8%-2% in the water-based coatings field, and 1.5%-3% in the ceramic/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 (5-35℃), 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) >3000mg/kg, classified as low toxicity; skin irritation test (rabbit) shows mild irritation. It is recommended to wear acid and alkali-resistant gloves and safety glasses during operation to avoid long-term skin contact.