Cocamide DEA/CDEA6501-92% (Ninol) needs to be added according to specific proportions based on different application scenarios. It is typically used as a thickener, foam stabilizer, and emulsifier in combination with primary surfactants. The recommended dosage is 1%~5% of the total formula weight.
Detailed Description
Cocamide DEA/CDEA6501-92% (Ninol) is a nonionic surfactant produced by Guoli Chemical with high active matter content (≥92%). It appears as a light yellow to amber viscous liquid, with an HLB value of approximately 6~7, easily soluble in water, and a cloud point of 80~90°C. Its molecular structure contains amide bonds and diethanolamine groups, giving it both hydrophilic and lipophilic properties, making it a multifunctional additive in liquid detergents, personal care products, and industrial cleaning formulations. This product enhances overall formulation performance through four main functions: thickening, foam stabilization, emulsification, and antistatic effects.
In practical use, this product is usually not used alone as the main active substance but is combined with other anionic surfactants (such as sodium lauryl ether sulfate AES, sodium dodecylbenzenesulfonate LAS, sodium alpha-olefin sulfonate AOS, etc.) to achieve synergistic effects. Due to its high viscosity at room temperature (kinematic viscosity approximately 400~800 mPa·s at 25°C), direct cold blending is difficult. It is recommended to preheat the product before use or use in-line mixing equipment.
Technical Parameters
The following are the core technical indicators of Cocamide DEA/CDEA6501-92% (Ninol) (data source: Guoli Chemical product database) for reference in formulation design:
| Parameter | Technical Indicator |
|---|
| Active Matter Content | ≥92% |
| Appearance (25°C) | Light yellow to amber viscous liquid |
| HLB Value | 6~7 |
| pH of 1% Aqueous Solution | 9.0~11.0 |
| Amine Value (mg KOH/g) | ≤55 |
| Free Diethanolamine | ≤1.0% |
| Moisture Content | ≤1.0% |
| Density (25°C) | 1.01~1.05 g/cm³ |
| Freezing Point | < -5°C |
| Iodine Value | ≤10 |
| Cloud Point | 80~90°C |
Application Recommendations
Recommended Dosage (based on total formula weight)
- Shampoo, Shower Gel, Hand Soap: 2%~5%, combined with main active agents such as AES and betaine to significantly enhance system viscosity and foam fineness.
- Facial Foam, Body Wash Soap: 1.5%~3%, providing gentle cleansing and moisturizing feel in low-irritation formulas.
- Dishwashing Liquid: 1%~3%, enhances oil removal ability while improving foam stability and product consistency.
- Hard Surface Cleaner: 1%~2%, acts as a thickening carrier to prolong contact time and improve cleaning effect.
- Industrial Degreaser/Degreasing Agent: 3%~8%, used in combination with alkaline aids and nonionic penetrants to strengthen emulsification and stripping of heavy oil stains.
- Textile Scouring Agent/Penetrant: 3%~5%, aids in removing natural waxes and spinning oils from fibers.
- Metalworking Fluids: 1%~3%, serves as an emulsifying dispersion component with both anti-rust and foam-suppressing effects.
Addition Method and Operating Points
- Preheating to Reduce Viscosity: It is recommended to preheat the product to 40~50°C to reduce viscosity for easier pumping and pouring. The preheating temperature should not exceed 70°C to avoid color darkening or slight decomposition.
- Addition Sequence: in liquid detergent products, after the main anionic surfactant is fully dissolved and the pH is adjusted, slowly add the preheated Cocamide DEA while stirring at medium speed (avoid entraining too much air). Continue stirring for 10~15 minutes after the mixture becomes uniform and transparent.
- Salt Thickening Synergy: The thickening effect of this product is sensitive to electrolytes (such as sodium chloride). If further viscosity adjustment is needed, after the Cocamide DEA is added and dispersed evenly, slowly add a salt solution to fine-tune the viscosity, preventing local high salt concentration that may cause cloud point precipitation or gelation.
- Compatibility Recommendations: Optimal compatibility is with anionic surfactants such as AES, LAS, AOS. Combining with amphoteric surfactants (such as cocamidopropyl betaine CAB) can further improve foam quality and mildness. In the formula, the mass ratio of anionics to this product is generally controlled between 3:1 and 6:1.
- pH Control: If used in an acidic system, first add acidic components to adjust the pH to the target value, then add Cocamide DEA at the end, ensuring the final product pH is not lower than 5.5 to maintain product stability.
Precautions
- Safety Protection: Must wear nitrile or neoprene protective gloves and chemical safety goggles during operation. This product causes serious eye irritation (GHS Category 2), can cause skin irritation upon contact, and if it enters the eyes, immediately rinse with flowing water for at least 15 minutes and seek medical attention.
- Nitrosamine Risk Control: The product contains trace amounts of free diethanolamine (≤1.0%). It is strictly prohibited to coexist with nitrites under acidic conditions of pH <5 in the formula, as this may generate potentially carcinogenic N-nitroso compounds. Special evaluation is required when using raw materials containing nitrates/nitrites in the formula.
- Storage Conditions: Store sealed in a cool, ventilated place at 10~40°C away from direct sunlight. Prolonged storage below the freezing point (below -5°C) may cause stratification; before use, slowly warm up at room temperature and stir evenly. Use promptly after opening, and seal the container tightly to prevent moisture absorption for remaining product.
- Compatibility: Avoid direct contact with strong oxidizers (peroxides, permanganates, etc.) and strong acids (concentrated sulfuric acid, hydrochloric acid, etc.). When mixing with other nonionic or anionic
