Cocamide DEA (6501-80%, Ninol) performs relatively well in environmental aspects. According to the environmental fate data in the database, this product is readily biodegradable. The degradation rate measured by the OECD 301B method is greater than 90%, indicating that it can be effectively decomposed by microorganisms in the natural environment and is not prone to long-term residue in ecosystems. Meanwhile, its n-octanol/water partition coefficient (log Kow) is approximately 2.5–3.5, low bioaccumulation potential, making it unlikely to accumulate in organisms through the food chain.
In terms of ecotoxicity, cocamide DEA has relatively low toxicity to aquatic organisms: the 96-hour median lethal concentration (LC₅₀) for fish is greater than 10–100 mg/L, and the 48-hour median effect concentration (EC₅₀) for daphnia is greater than 10–50 mg/L, classified as low toxicity. The oral acute toxicity LD₅₀ for rats is greater than 5000 mg/kg, also classified as a low-toxicity substance. This means that under normal use and discharge conditions, the risk to aquatic ecosystems is relatively controllable.
It should be particularly noted that the free diethanolamine (DEA) content in the product is controlled (typically less than 5%). Diethanolamine is classified as Group 2B (possibly carcinogenic to humans) by the International Agency for Research on Cancer (IARC), but the finished cocamide DEA product as a whole is not classified as a carcinogen, and the Ames test result is negative. Under nitrosation conditions (e.g., coexisting with nitrites in an acidic environment), attention should be paid to the potential formation of N-nitroso compounds, which is a key risk point to manage in environmental and safety aspects.
| Environmental Indicator | Parameter Value | Test Method/Standard |
|---|---|---|
| Biodegradability | ＞90% (Readily Biodegradable) | OECD 301B |
| Bioaccumulation Potential (log Kow) | Approximately 2.5–3.5 | — |
| Fish Acute Toxicity (96h LC₅₀) | ＞10–100 mg/L | — |
| Daphnia Acute Toxicity (48h EC₅₀) | ＞10–50 mg/L | — |
| Free Diethanolamine Content | Typically ＜5% (Controlled) | — |
| Ames Mutagenicity | Negative | — |
Given its good biodegradability and low ecotoxicity, cocamide DEA is suitable for formulation systems with certain environmental requirements, such as personal care products, household cleaning products, etc. If your end product needs to apply for specific environmental certifications such as EU Ecolabel, China Environmental Labeling (Ten-ring Certification), Green Seal, it is recommended to confirm with the certification body during the formulation design phase regarding the specific restrictions on alkanolamide surfactants under such certifications, as some certification systems have strict upper limits on free DEA content in raw materials.