What is Petroleum Hydrocarbons, Odorless, Light?
Petroleum Hydrocarbons, Odorless, Light (CAS Number 977051-68-5) is a highly refined mineral oil derived from crude petroleum. Through extensive processing and purification, the crude oil is treated to remove aromatic compounds and odorous components, resulting in a clear, colorless liquid composed primarily of saturated hydrocarbons with carbon chain lengths typically between C15 and C40. The "light" designation refers to its lower viscosity grade compared to heavier mineral oil products.
Common Uses
In food manufacturing, Petroleum Hydrocarbons, Odorless, Light functions as a solvent and vehicle for flavoring compounds and other food additives. It is occasionally used in processing aids during food production and in some specialty food applications. The additive's primary advantage is its inert nature—it does not react with other food components—and its ability to dissolve and distribute flavoring agents and other substances evenly throughout food products. Its use is most common in countries where such mineral oil solvents are explicitly permitted in food applications.
Safety Assessment
The FDA has not granted GRAS (Generally Recognized As Safe) status to this specific formulation. However, the FDA's database shows zero adverse events and zero recalls associated with this additive, indicating no documented safety incidents in U.S. food products. The European Food Safety Authority (EFSA) has established strict specifications for mineral oils used in food, distinguishing between saturated hydrocarbon oils (MOSH) and aromatic hydrocarbon oils (MOAH), with the latter being subject to greater restrictions due to potential contaminant concerns.
The safety profile of highly refined, odorless mineral oils is generally considered acceptable in jurisdictions where they are permitted, provided they meet strict purity specifications. Toxicological studies on refined mineral oils show minimal absorption in the gastrointestinal tract when ingested in typical food use levels. Most ingested mineral oil passes through the digestive system largely unchanged. The primary safety consideration involves ensuring the product meets rigorous refining standards to eliminate potentially harmful aromatic or unsaturated components.
Regulatory Status
Regulatory approval for Petroleum Hydrocarbons, Odorless, Light varies significantly by jurisdiction. In the United States, while not GRAS-listed, mineral oils meeting certain specifications can be used in specific food applications under FDA regulations, particularly as processing aids where they are not intended to remain in the final food product. In the European Union, mineral oils (both MOSH and MOAH) are permitted in food only under very limited circumstances and with strict compositional requirements established in Regulation (EU) 2015/321. Canada, Australia, and other countries maintain varying standards for mineral oil use in food.
The lack of GRAS status in the U.S. suggests that while the additive may be used in certain limited applications, it has not undergone the comprehensive review process required for GRAS designation. Manufacturers using this substance must comply with all applicable food additive regulations in their respective jurisdictions.
Key Studies
Toxicological research on refined mineral oils demonstrates that highly purified, saturated hydrocarbon fractions have low systemic toxicity. Studies show that refined mineral oils are poorly absorbed through the gastrointestinal tract, with most ingested material being eliminated in feces. Research has focused on distinguishing between the safety profiles of different mineral oil fractions, with particular attention to aromatic contaminants that may accumulate in tissues. The EFSA's recent assessments have emphasized the importance of compositional specifications in determining the safety of mineral oil products used in food applications.