Cocamide DEA (Ninol) is a nonionic alkanolamide surfactant. The 92% high active content version appears as a light yellow to amber viscous liquid at room temperature, easily soluble in water, with good compatibility and thickening and foam stabilizing properties. However, during use, due to its residual free diethanolamine (usually controlled within a certain range) and according to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS), this product is classified as Skin Irritant Category 2 (H315), Serious Eye Irritation Category 2 (H319), and Carcinogenicity Category 2 (H351, IARC 2B). Full attention must be given during operation.
The most critical safety hazard is: The diethanolamine contained in this product may generate N-nitroso compounds under specific conditions (such as coexistence with nitrites in an acidic environment), which are potentially carcinogenic. Therefore, during formulation design and use, it is strictly necessary to avoid contact with nitrites and nitrosating reagents, and to control the pH environment of the system. Additionally, when heating, prolonged exposure above 120°C should be avoided to prevent product decomposition or release of harmful gases (such as nitrogen oxides, carbon monoxide, etc.).
From a practical operational perspective, the workshop should be equipped with a good ventilation system and local exhaust devices. Operators must receive professional training before starting work. During operations, wear chemical protective gloves made of nitrile or chloroprene rubber, chemical safety goggles, and appropriate protective clothing. After work, thoroughly wash hands and exposed skin. The workplace should be equipped with eyewash stations and emergency shower facilities for emergency use.
The following are the key safety-related technical parameters for Cocamide DEA/CDEA6501-92% (Ninol) (Data source: Guoli Chemical Product Database):
| Parameter Item | Value |
|---|---|
| Active Content | ≥92% |
| Appearance | Light yellow to amber viscous liquid |
| CAS Number | 68603-42-9 |
| Ion Type | Nonionic |
| pH of 1% Aqueous Solution | 9.0~11.0 |
| Free Diethanolamine Content | ≤1.0% |
| Density (25°C) | 1.01~1.05 g/cm³ |
| Flash Point | ＞150°C |
| HLB Value | 6~7 |
| Solubility | Easily soluble in water |
| GHS Hazard Classification | Skin Irritant Category 2 / Eye Irritant Category 2 / Carcinogenicity Category 2 |
| Storage Temperature | 10～40°C (Cool, dry, well-ventilated area) |
| Freezing Point | ＜-5°C |
In personal care products (shampoos, body washes, facial cleansers), the recommended dosage is typically 1%~5%; in household and industrial cleaning products, 2%~8%; in metalworking fluids, 1%~3%. In formulation design, it should be used in combination with anionic surfactants (such as AES, LAS), and inorganic salts (like sodium chloride) can be used synergistically to achieve optimal thickening effects. Special note: Strictly avoid coexistence with nitrite-type preservatives or other nitrosating reagents under acidic conditions; it is recommended to use a non-nitrosating preservation system. For heating and dissolution, it is recommended to control the temperature at 60~80°C, avoiding prolonged high-temperature heating.