According to the technical data from Guoli Chemical, regarding the comparative advantages of Tween T-20 (coconut fatty acid) over other similar products, the following information is provided:
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## Data Query Result Description
In this query, data retrieval was conducted for five products: Tween T-20 (coconut fatty acid), Tween T-60, Tween T-80, Tween T-81, and Tween T-85. However, the database returned detailed technical parameters only for Tween T-20 (coconut fatty acid). Independent technical indicator data for the other models were not reflected in this query result, making a direct horizontal comparison infeasible.
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## Core Advantages of Tween T-20 (coconut fatty acid)
Based on the authentic technical parameters of Tween T-20 (coconut fatty acid) from the Guoli Chemical database, this product excels in the following aspects:
### 1. High HLB Value, Excellent O/W Emulsifying Ability
The HLB value of Tween T-20 (coconut fatty acid) is 16.7, classifying it as a highly hydrophilic nonionic surfactant, particularly suitable for preparing oil-in-water (O/W) emulsion systems.
### 2. Extremely High Cloud Point, Excellent High-Temperature Stability
Its cloud point > 100°C (1% aqueous solution) indicates it does not easily turn turbid in high-temperature systems under normal pressure, making it suitable for applications requiring high-temperature processing (e.g., pharmaceutical preparations requiring high-temperature sterilization, hot-filled foods, etc.).
### 3. High Purity Monoester Content
| Technical Indicator | Value |
|---------------------|-------|
| Monoester Content | ≥ 90% |
| Diester Content | ≤ 10% |
| Active Content | ≥ 97% |
| Free Alcohol Content | ≤ 1% |
High monoester content implies good batch-to-batch consistency, high emulsification efficiency, and strong formulation predictability.
### 4. Extremely Low Unsaturation
Iodine value ≤ 2 indicates very few double bonds in the molecular chain, resulting in excellent oxidation stability. The product is less prone to oxidation-related off-flavors and discoloration, making it suitable for cosmetics, foods, and pharmaceutical excipients requiring high stability.
### 5. Excellent Chemical Stability and Compatibility
| Property | Description |
|----------|-------------|
| pH Range | 1% aqueous solution pH 5.0-7.0, near neutral |
| Alkali Resistance | Stable in dilute alkali |
| Hard Water Resistance | Good |
| Ionic Type | Nonionic, compatible with anionic, cationic, and nonionic surfactants |
### 6. Key Application Performance Parameters
| Performance Indicator | Value |
|----------------------|-------|
| Surface Tension (1% aqueous solution, 25°C) | ~37 mN/m |
| Critical Micelle Concentration (CMC) | ~6×10⁻⁵ mol/L (approx. 0.007% w/v) |
| Penetrating Power | Moderate |
| Foaming Ability | Moderate foaming and foam stability |
| Solubility | Easily soluble in water, methanol, ethanol |
The low CMC value means excellent emulsification and solubilization effects can be achieved at very low dosages, offering outstanding cost-effectiveness.
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## Application Recommendations
As a flagship product of Guoli Chemical, recommended dosages for Tween T-20 (coconut fatty acid):
| Application Area | Recommended Dosage (wt%) |
|------------------|--------------------------|
| O/W Emulsion Systems | 1% - 5% |
| Solubilization of Fragrances/Essential Oils | 1:1 to 5:1 (oil ratio) |
| Pesticide Spreading and Synergism | 0.1% - 0.5% |
| Industrial Cleaning Formulations | 2% - 8% |
| Textile Antistatic Treatment | 0.5% - 2% |
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## Precautions
1. Tween T-20 (coconut fatty acid) is slightly hygroscopic; seal tightly after opening to maintain quality.
2. Recommended storage temperature 5°C to 35°C, avoid extreme temperatures and direct sunlight.
3. Under recommended storage conditions, shelf life is 24 months from the date of manufacture.
4. For detailed characteristic comparisons with other Tween series products, please contact Guoli Chemical's technical department directly for complete product literature.
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> **Note**: This response is strictly based on actual technical data for Tween T-20 (coconut fatty acid) from the Guoli Chemical database; all parameters are verifiable. For comparative analysis of other product models, please provide specific model numbers or application scenarios.
