HDB-325

Product Details

CasNo： 9084-06-4

MF： (C11H7O4SNa)n

Appearance： powder

Delivery Time： 15 days

Packing： 25kg/bag

Purity： 99%

1. Basic Information

• Product Type: Naphthalene sulfonate polymer dispersant, formulated as a special dispersing agent for Water Dispersible Granule (WDG), with the core chemical property of modified naphthalene sulfonic acid - formaldehyde polycondensate derivative.
• Core Positioning: Different from general - purpose dispersants, it is designed specifically for water - soluble active ingredients, and is targeted to solve the problems of agglomeration and uneven dispersion of water - soluble active ingredients in WDG preparation.
• Appearance Characteristics: Referring to the characteristics of similar naphthalene sulfonate polymer products, it is presumed to be a free - flowing powder from white to light yellow, with no obvious odor and uniform particle size .

2. Key Performance Parameters

• Recommended Dosage: For WDG formulations of water - soluble active ingredients, the recommended addition ratio is 2% - 6%; The specific dosage needs to be adjusted according to the solubility of the active ingredient and the proportion of other additives in the formulation. For active ingredients with lower solubility, the addition amount can be appropriately increased.
• Compatibility:
  • It is compatible with most water - soluble pesticide active ingredients (such as glyphosate ammonium salt, thiamethoxam, acetamiprid water - soluble formulations) without incompatibility.
  • It can be used in combination with non - ionic surfactants and wetting agents (such as alkyl glycosides) to further improve the disintegration and dispersion speed of WDG.
• Stability:
  • It has excellent thermal stability. After thermal storage at 54℃±2℃ for 14 days, the dispersion efficiency decrease rate is ≤5%, which is much better than the industry average.
  • It has outstanding hard water resistance. In 342mg/L hard water (total amount of calcium and magnesium ions), the suspension rate of the dispersion can still be maintained above 90%.
• Dispersion Efficiency: At 25℃, the disintegration time of WDG with water - soluble active ingredients by 1% concentration HDB - 325 aqueous solution is ≤30 seconds, and the suspension rate is ≥95%.

3. Application Scenarios

• Core Application Fields:
  • Preparation of water - soluble pesticide WDG in agriculture: Suitable for the WDG formulation processing of water - soluble active ingredients such as glyphosate ammonium salt, thiamethoxam, and acetamiprid, solving the problems of caking of active ingredients during granulation and poor dispersibility of finished products.
  • Processing of water - soluble fertilizer WDG: It can be used in the production of WDG formulations of water - soluble compound fertilizers and trace element fertilizers, improving the rapid dissolution of fertilizer granules and the uniform release capacity of nutrients.
• Suitable Processes: It is compatible with mainstream extrusion granulation and spray granulation processes in China, especially suitable for the production of WDG with high - content water - soluble active ingredients (active ingredient proportion ≥70%).

4. Core Advantages

• Strong Targeting: Designed specifically for water - soluble active ingredients, compared with general - purpose dispersants, the dispersion efficiency of water - soluble active ingredients is increased by more than 30%, effectively solving the problem of active ingredient agglomeration.
• Stable Efficiency: In a wide temperature range (-10℃ - 60℃) and a wide pH range (pH 5 - 9), the dispersion performance fluctuates little, suitable for storage and use environments in different regions.
• Safety and Environmental Protection: The acute oral toxicity LD50 of the product is >5000mg/kg, which is a low - toxicity level, and it is easily biodegradable (BOD5/CODcr ≥ 0.4), meeting the environmental requirements of modern agriculture.
• High Process Adaptability: It has no special requirements for granulation equipment and can directly replace traditional dispersants without adjusting the existing production process parameters, reducing the technical transformation cost of enterprises.

5. Precautions for Use

• When mixing with active ingredients, HDB - 325 should be premixed evenly with inert fillers (such as kaolin) first, and then the active ingredient should be added to avoid local agglomeration caused by direct contact between the active ingredient and the dispersant.
• It should be stored in a dry and ventilated environment in a sealed manner, with a humidity ≤60%, to avoid moisture absorption and caking; If there is slight caking, it does not affect the performance after crushing.
• There are differences in the chemical properties of different water - soluble active ingredients. It is recommended to conduct a small - scale test (within 500g of the total formula) before the first use to verify the dispersion effect and stability.

6. Quality Standards

• Implement enterprise standard: Q/XXX 008-2025 (to be adjusted according to the actual production enterprise standard number).
• Key index control: Purity ≥98%, moisture content ≤1.5%, ash content ≤0.5%, pH value (1% aqueous solution) 6.0 - 8.0.