What is Cyclohexylamine?
Cyclohexylamine (CHA) is a cyclic organic amine with the chemical formula C6H11NH2 and CAS number 108-91-8. It is a colorless liquid with a characteristic amine odor. The compound exists as a six-membered carbon ring with an amino group attached to one carbon atom. Cyclohexylamine is primarily used in industrial applications rather than as a direct food ingredient.
Common Uses
Cyclohexylamine is utilized as a boiler water additive in food processing and other industrial facilities. In this application, it functions as a corrosion inhibitor, helping to protect metal surfaces in steam generation systems and hot water equipment used in food manufacturing. The compound works by forming a protective film on metal surfaces that prevents oxidation and corrosion. While boiler systems are not directly food-contact surfaces where the additive would remain in finished products, it may have historical relevance to food processing equipment maintenance.
Safety Assessment
Cyclohexylamine has raised health concerns in regulatory discussions, primarily based on animal toxicity studies conducted in the 1970s. Early research suggested potential carcinogenic activity in animal models, which led to regulatory caution regarding its use. The compound is known to be metabolized in the body and may have systemic effects at high doses.
The FDA has not established cyclohexylamine as a GRAS (Generally Recognized As Safe) substance for food use. According to FDA records, there have been zero adverse events reported and zero product recalls associated with cyclohexylamine in the food supply. This absence of reported harm reflects its minimal direct presence in food products rather than evidence of safety.
Animal studies have shown that cyclohexylamine can be absorbed through oral exposure and distributed to various tissues. The compound has been detected in some foods historically, particularly those processed with equipment utilizing the additive, though such contamination would be incidental rather than intentional.
Regulatory Status
In the United States, cyclohexylamine is not approved by the FDA as a food additive for direct use in foods intended for human consumption. It is not listed on the FDA's list of permitted direct additives. While it may be used in boiler water systems in food processing facilities, these applications fall under equipment maintenance rather than food additive classifications.
The European Food Safety Authority (EFSA) has similarly not approved cyclohexylamine for use as a food additive. The compound's regulatory history reflects concerns raised during the 1970s when enhanced scrutiny of food-related chemicals occurred.
Cyclohexylamine may be permitted in boiler water used in food processing under specific conditions in some jurisdictions, provided it does not contaminate the food product itself. Regulatory agencies maintain the position that no cyclohexylamine should appear in the final food product supplied to consumers.
Key Studies
Historical toxicological research on cyclohexylamine focused primarily on animal models, examining potential carcinogenic and reproductive effects. These studies, primarily conducted in the 1970s, influenced regulatory decisions regarding the compound's use in food-related applications. Modern comprehensive risk assessment data specific to low-level dietary exposure remains limited in published literature.