How to use Cocamide DEA (6501-80%): Usually by direct addition or pre-mixing dissolution, the recommended dosage is 1%~5% of the total formulation, and the specific amount should be adjusted according to the required thickening and foam stabilization effects of the system.
Detailed Description
Cocamide DEA/CDEA (6501-80%, Ninol), as a nonionic surfactant (alkanolamide), has relatively flexible usage methods due to its excellent thickening, foam stabilization, and emulsifying properties. The product is a viscous liquid and can be handled at room temperature. The most common process is to add it directly during the middle to late stage of formulation under stirring to ensure thorough mixing. For high-viscosity systems, to improve dispersion speed and uniformity, it is recommended to pre-dissolve it with other surfactants already in the system or a small amount of water to form a uniform slurry before adding to the main reactor.
This product has excellent compatibility with anionic, nonionic, and amphoteric surfactants, especially good at producing a significant synergistic thickening effect with anionic surfactants (such as AES, LAS). During use, the viscosity of the final product can be precisely controlled by adjusting the ratio of Cocamide DEA to the main surfactant. Increasing its dosage will significantly increase the consistency of the system, while also notably improving the fineness and stability of the foam.
The typical operation steps for dissolution and addition are as follows: First, ensure good ventilation in the work area, and operators should wear chemical protective gloves and goggles. Then, weigh the required amount of Cocamide DEA and slowly add it to the aqueous phase or other surfactant raw materials under continuous low-to-medium speed stirring. If heating is needed to accelerate dissolution or reduce viscosity, according to the product instructions from the Guoli Chemical database, control the heating temperature and avoid prolonged heating above 120°C to prevent product decomposition or generation of harmful substances. When compounding in an acidic system, ensure the system pH is first adjusted to alkaline or neutral before adding this product to avoid performance degradation caused by low pH conditions.
Application Recommendations
The following are recommended addition amounts for major application areas (based on Guoli Chemical product data and general industry experience) for reference in formulation design:
- Personal Care Products (shampoo, body wash, hand sanitizer): The addition amount is usually 1.0% – 5.0% of the total formulation. Within this range, it can effectively thicken and stabilize foam, giving the product an ideal appearance and skin feel. For example, in typical shampoo formulations, it is often compounded with AES at a ratio of (1:3) to (1:6) to produce rich and dense foam.
- Liquid Detergents (dishwashing liquid, laundry detergent, hard surface cleaner): Recommended addition amount is 1.5% – 4.0% of the total formulation. It mainly plays a role in enhancing oil removal, thickening, and foam stabilization. Especially in dishwashing liquid formulations, it is a key additive to improve hand washing experience and oil removal efficiency.
- Industrial and Textile Auxiliaries (scouring agent, detergent, antistatic agent): Depending on the strictness of cleaning or emulsification requirements, the addition amount can be adjusted in the range of 2.0% – 10.0%, used to improve the formulation's ability to emulsify and disperse and remove mineral oils and weaving oils.
- Metalworking Fluids (cutting fluid, rust preventive fluid): As an emulsifier and auxiliary rust inhibitor component, the recommended dosage is 1.0% – 5.0% of the total concentrate, to promote stable emulsification of oil components and form a protective film on the metal surface.
Precautions
- Safety Protection: The product contains diethanolamine (DEA) and is irritating to skin and eyes. Be sure to wear nitrile gloves and chemical safety goggles during operation, and work in a well-ventilated area. For detailed safety information, refer to the product’s Safety Data Sheet (SDS).
- Incompatibility: Do not use or store under nitrosation conditions, i.e., avoid coexistence with nitrites in an acidic environment to prevent the formation of potentially carcinogenic N-nitroso compounds.
- Temperature Control: When heating to dissolve, do not exceed high temperatures; avoid prolonged heating above 120°C to prevent decomposition and darkening of color.
- pH Effect: As an alkanolamide, its performance is most stable and superior in a slightly alkaline environment (pH 8.0 ~ 10.5); if used in acidic formulations, the amide bond may slowly hydrolyze, affecting thickening and foam stabilization effects.
