CDEA has good wetting, cleaning, dispersion performance, can effectively reduce the surface tension of the liquid, so that dirt is more easily washed away by water, thus enhancing the removal ability of liquid soap on various stains, such as grease, dust, skin secretions, etc.
Cocamide diethanolamine (CDEA) is a non-ionic surfactant made from the reaction of coconut oil fatty acids with diethanolamine, which plays an important role in liquid soap cleaning, specifically as follows:
Performance advantage
Good cleaning ability: CDEA has good wetting, cleaning, dispersion performance, can effectively reduce the surface tension of the liquid, so that dirt is more easily washed away by water, thus enhancing the removal ability of liquid soap on various stains, such as grease, dust, skin secretions, etc.
Excellent foaming and stabilizing properties: As a highly effective foaming agent, CDEA produces rich, fine and stable foams. In the use of liquid soap, the rich foam not only brings a good use experience, but also increases the contact area between the soap and the stain, making the cleaning more thorough, and the foam is not easy to break and disappear during use, and continues to play a cleaning role.
Thickening effect: CDEA can increase the viscosity of liquid soap, so that it has better fluidity and use feel, but also easy to control the use of soap, to avoid too thin and waste.
Hard water resistance: In hard water areas, metal ions such as calcium and magnesium in the water may affect the cleaning effect and foaming performance of the soap. CDEA has a certain ability to resist hard water, even when used in a hard water environment, it can maintain a good cleaning and foaming effect, reducing the problem of soap precipitating in hard water or reducing cleaning efficiency.
Principle of action
Reduced surface tension: The molecular structure of CDEA contains both hydrophilic and hydrophobic groups. When it is dissolved in water, the hydrophobic group will tend to bind to non-polar substances such as oils in the stain, while the hydrophilic group interacts with water. This reduces the surface tension between the stain and the water, and the stain is more easily moistened and dispersed by the water, making it easier to clean.
Emulsification: For grease stains in liquid soap cleaning, CDEA can be used as an emulsifier to make the grease evenly dispersed in the water in the form of tiny droplets to form a stable emulsion. This emulsification prevents the oil from regathering and adhering to the surface of the cleaned object, allowing the oil to be washed off with the water.
Solubilization: CDEA can make some organic substances that are originally insoluble in water dissolve into the inside of the micelle, so that its solubility in water increases, so that it is easier to be cleaned and removed.
Precautions for use
Content control: Although CDEA has many advantages in liquid soaps, excessive use may cause skin irritation, residue and other problems. Generally, the amount added in liquid soap should not be too high, usually about 2% can achieve better results.
Quality selection: Quality CDEA products should be selected, poor quality CDEA may contain impurities or incomplete raw materials, which may cause adverse effects on the skin and the environment.
Compatibility with other ingredients: When preparing liquid soap, it is necessary to pay attention to the compatibility of CDEA with other ingredients to avoid interaction with some ingredients and affect the performance and stability of the product. For example, mixing with some strongly acidic or strongly alkaline substances may cause the performance of CDEA to decrease or produce adverse reactions.
FAQ
1.Can CDEA in liquid soap irritate the eyes?
In the normal use of liquid soap and does not enter the eyes, CDEA usually does not cause irritation to the eyes, because it mainly acts on the surface of the skin, playing a cleaning, thickening and foaming role, in this case basically does not come into direct contact with the eyes.
2.In which products is CDEA widely used?
Liquid detergents: such as dish soap, laundry detergent, etc., CDEA, as a thickening agent, foam stabilizer and foaming aid, can enhance the decontamination ability of the detergent, so that it can produce rich and stable foam, but also make the detergent more smooth when used, easy to rinse.
Shampoo and shower gel: It can make the product have good foaming and foam stability, so that the user can produce rich foam in the process of shampoo and bath, bring comfortable experience, but also make the hair soft and easy to comb, prevent the skin from drying and cracking.
Skin care products: Used as an emulsion stabilizer in some cream products, which helps to maintain the stability and texture of the product, but also has a certain skin protection, so that the skin feels soft.
3.What is the standard for the use of CDEA in daily chemical products?
At present, there is no specific standard for the use of CDEA in daily chemical products in China, but you can refer to the following relevant regulations and indicators:
Relevant quality standard
Quality indicators: The general requirements of CDEA products are amine value (mgKOH/g) ≦35, pH value (1% aqueous solution, 25℃) between 9.0 and 11.0, ester content (%) ≦5.0, amide content (%) ≧78.0.
Raw material safety requirements: CDEA, as a raw material in daily chemical products, must meet the overall requirements for raw material safety such as the "Cosmetic Safety Technical Specification" (2015 edition), shall not use prohibited substances, and restricted substances shall be used within the specified limit range. For example, certain impurities or by-products that may be present in CDEA, if they are prohibited or restricted substances, need to be strictly controlled.
Use limits and precautions in different daily chemical products
Shampoo and shower gel: It is generally recommended to add about 2%-6% to ensure that the product has good foaming and foam stability, while making the hair soft and easy to comb, and preventing dry and cracked skin. In the process of use, it is necessary to ensure that the irritation of the product to the eyes and skin under normal conditions of use meets the safety standard, and the pH value should be controlled within the appropriate range, generally 4.0-8.0, to avoid adverse effects on the skin and hair.
Skin care products: When used as an emulsion stabilizer in cream products, usually the amount added should not be too high, so as not to affect the texture and stability of the product. It is necessary to pay attention to its compatibility with other ingredients to ensure that the product will not be stratified, deteriorated and other phenomena during long-term storage and use, and will not be irritating and allergic to the skin.
Laundry detergent and dishwashing liquid: the addition amount is generally about 1%-5%, which can enhance the decongestability and thickening effect of the detergent, so that it produces a rich and stable foam. The CDEA content in the product should ensure that it will not remain on the clothing or tableware too much after use, so as to avoid potential harm to human health, and ensure that the pH value of the product is within a reasonable range, generally 6.5-10.5, to avoid damage to clothing fibers and tableware.
