PETROLEUM HYDROCARBONS, ODORLESS, LIGHT

CAS: 977051-68-5 SOLVENT OR VEHICLE

PETROLEUM HYDROCARBONS, ODORLESS, LIGHT is a multipurpose petroleum‑derived solvent or vehicle used in a variety of food contact and processing applications under specified conditions defined in the Code of Federal Regulations.

What It Is

PETROLEUM HYDROCARBONS, ODORLESS, LIGHT refers to a complex mixture of liquid hydrocarbons derived from petroleum or synthesized from petroleum gases and is characterized by a faint odor that is not kerosenic. These hydrocarbons are chiefly paraffinic, isoparaffinic, or naphthenic in nature, meaning the mixture contains straight‑chain, branched chain, and cycloaliphatic hydrocarbon molecules. This ingredient is listed with the CAS Registry Number 977051‑68‑5, which identifies it as a specific petroleum hydrocarbon mixture recognized in regulatory inventories for food contact uses. It does not have a unique PubChem entry verified against that CAS number in public chemical databases, so detailed structural information at a molecular level is not available in the context of food additive regulation. As a technical functional class, this petroleum hydrocarbon mixture acts as a solvent or vehicle. In food regulatory contexts, this designation reflects its role in facilitating the application, dispersion, or performance of other substances in processing steps, coatings, or as part of processing aids. The term "odorless light" distinguishes this fraction from heavier or more strongly odorous petroleum fractions, indicating a lighter boiling range and lower volatility compared to heavier mineral oils.

How It Is Made

PETROLEUM HYDROCARBONS, ODORLESS, LIGHT are obtained from refining crude petroleum sources. Crude oil undergoes fractional distillation to separate various hydrocarbon fractions by their boiling ranges. The fraction corresponding to "light" petroleum hydrocarbons is further refined to remove odorous and high‑boiling components, producing a clear, colorless liquid with a faint, non‑kerosenic smell. Refining may involve processes such as hydro‑treating to saturate unsaturated compounds and remove sulfur and other impurities, along with solvent extraction and distillation control to meet specified boiling point ranges. For regulatory purposes in the United States, specifications tied to regulated uses include boiling point limits and ultraviolet absorbance criteria to ensure that the fraction meets defined quality parameters. The resulting mixture is not a single chemical compound but a defined range of hydrocarbon molecules. Refiners strive to achieve consistency in composition to meet regulatory specifications, such as those found in 21 CFR 172.884 and 178.3650, which outline acceptable physical properties for food contact uses. Although the underlying chemical structures vary within the mixture, the refining processes focus on ensuring predictable performance and compliance with established criteria for hydrocarbon content and purity.

Why It Is Used In Food

PETROLEUM HYDROCARBONS, ODORLESS, LIGHT are used in food and food processing contexts because they serve as effective solvents, vehicles, coatings, and processing aids. Their non‑polar hydrocarbon nature makes them suitable for carrying or dissolving other non‑polar substances, helping distribute or apply processing aids uniformly. Regulatory sections such as 21 CFR 172.884 authorize this ingredient as a multipurpose additive for direct food contact in specific applications like coatings on shell eggs and as a float on fermentation fluids, where it helps control air contact and evaporation. In other contexts covered by related regulations, similar hydrocarbon mixtures can function as defoamers or processing aids where a hydrophobic medium is desirable. Because the ingredient is essentially odorless and transparent, it does not impart detectable sensory characteristics to food. In addition to direct contact with food, odorless light petroleum hydrocarbons can be part of adhesives or coatings under rules such as 21 CFR 175.105, where they contribute to material performance without migrating significantly into food when used with proper barriers. The versatility of this hydrocarbon fraction as a processing aid stems from its solvency, chemical inertness, and compatibility with hydrophobic materials, making it a practical choice for multiple food production and packaging steps.

Adi Example Calculation

To illustrate how acceptable daily intake (ADI) concepts might be applied in a hypothetical scenario, consider a generic ADI of X mg per kg of body weight per day for a substance with an established ADI. If an individual weighing 70 kg consumed food containing a hypothetical migration of that substance at Y mg per kilogram of food, the daily intake would be calculated by multiplying the food consumption amount by the concentration and dividing by body weight. In this hypothetical scenario, if a person consumes 1 kg of food daily with Y mg of the substance per kg of food and their body weight is 70 kg, the per‑body‑weight intake would be Y divided by 70. This example is illustrative and does not apply to PETROLEUM HYDROCARBONS, ODORLESS, LIGHT because a specific numeric ADI for this CAS‑identified mixture has not been established in authoritative regulatory databases. Instead, it shows how intake assessments are structured and why regulators use body weight and exposure estimates to determine whether exposure remains below an established ADI. Real exposure assessments would rely on measured or modeled migration values and a verified numeric ADI, neither of which are currently defined for this exact hydrocarbon mixture.

Safety And Health Research

Safety assessments of petroleum hydrocarbon mixtures like PETROLEUM HYDROCARBONS, ODORLESS, LIGHT focus on the nature of the hydrocarbon components, their absorption and elimination, and potential toxicological effects associated with long‑term exposure. Regulatory frameworks such as those implemented by the U.S. Food and Drug Administration evaluate whether specific hydrocarbon mixtures meet physical and chemical criteria for their intended uses, including defined boiling ranges and absorbance properties to limit the presence of certain undesirable components. Although detailed toxicological data on this exact mixture identified by CAS 977051‑68‑5 are not provided in primary regulatory documents, broader evaluations of mineral oils and related hydrocarbon fractions by expert bodies like the Joint FAO/WHO Expert Committee on Food Additives (JECFA) discuss potential health outcomes associated with various petroleum hydrocarbon classes. These assessments consider endpoints such as accumulation in tissues, inflammatory responses, and chronic toxicity observed in animal studies for certain hydrocarbon classes, and they emphasize the importance of refining processes to remove harmful constituents. In the context of regulatory use, specific hydrocarbon mixtures are permitted only under good manufacturing practice conditions and with specifications designed to ensure that potentially harmful components are minimized. Adherence to regulatory specifications and appropriate use limitations are core elements of risk management, supporting the position that when used within regulated conditions, these materials do not contribute significant risk to consumers. However, detailed safety studies for this exact mixture are not broadly published in primary regulatory sources, and thus scientists and regulators maintain a cautious approach that emphasizes specification compliance and controlled exposure.

Regulatory Status Worldwide

In the United States, PETROLEUM HYDROCARBONS, ODORLESS, LIGHT are included in the FDA’s list of substances recognized in the Code of Federal Regulations for various food contact and processing uses. The Federal Food, Drug, and Cosmetic Act provides the authority for these regulations, and the ingredient appears in sections such as 21 CFR 172.884, which specifically permits odorless light petroleum hydrocarbons for direct use under prescribed conditions, including specific physical property requirements such as boiling point and ultraviolet absorbance limits. Regulations also reference its use in paper and paperboard components under sections like 21 CFR 176.180 and related parts of the indirect additives regulations, as well as in defoaming applications under 21 CFR 173.340 where permitted processing aids include similar substances. The FDA’s Substances Added to Food inventory (formerly EAFUS) lists this ingredient with multiple CFR references, indicating authorized conditions for use as a solvent or vehicle in defined food contact applications. The appearance of this ingredient in multiple parts of Title 21 reflects its role in both direct and indirect food additive functions. This regulatory framework is designed to ensure that uses of PETROLEUM HYDROCARBONS, ODORLESS, LIGHT are consistent with good manufacturing practices and do not pose an undue risk to consumers when used as specified. Outside the United States, specific regulatory approvals and status may vary by jurisdiction. For example, European Union regulations may classify similar petroleum hydrocarbon mixtures under food contact material rules rather than direct food additive listings. International expert bodies such as the Joint FAO/WHO Expert Committee on Food Additives (JECFA) evaluate broad classes of mineral oils and related hydrocarbons, but a unique JECFA specification or acceptable daily intake for this exact petroleum hydrocarbon fraction is not available in primary authoritative sources, so specific international numeric limits are not set here.

Taste And Functional Properties

PETROLEUM HYDROCARBONS, ODORLESS, LIGHT do not contribute a taste or flavor to food when used in regulated food contact or processing applications. By definition and specification in regulatory texts, the odor associated with this material is faint and non‑kerosenic, indicating minimal sensory impact in finished products. Functionally, the hydrocarbon mixture exhibits non‑polar characteristics, meaning it will not mix with water but can interact with other non‑polar substances. This property allows it to act as a solvent for hydrophobic processing aids or as a medium in which other functional ingredients can be dispersed. The boiling range and low volatility of the mixture also confer stability under many processing conditions where lighter solvent fractions might evaporate. Because this hydrocarbon fraction is a complex mixture rather than a single compound, its precise behavior depends on the relative composition of paraffinic, isoparaffinic, and naphthenic components. However, in general, the mixture’s functional properties include good solvency for other non‑polar additives, chemical inertness under normal processing conditions, and a physical profile that supports its role as a vehicle or processing aid without altering the organoleptic properties of food.

Acceptable Daily Intake Explained

An acceptable daily intake (ADI) is a concept used by international expert panels to describe the amount of a substance that can be consumed daily over a lifetime without appreciable health risk, based on available toxicological data. For specific petroleum hydrocarbon mixtures like PETROLEUM HYDROCARBONS, ODORLESS, LIGHT, there is no unique ADI assigned in authoritative international databases that directly reference this exact CAS identifier. Broad classes of mineral oils and hydrocarbon fractions have been evaluated by committees such as JECFA, where group ADIs or ranges have been discussed for related materials, but a precise numeric ADI for this specific mixture is not established in the sources currently available. In general, ADIs are determined by identifying a no‑observed‑adverse‑effect level (NOAEL) from well‑conducted studies and applying safety factors to account for uncertainties, such as differences between laboratory animals and humans. When no specific data set exists for a given substance, regulators rely on related chemical classes and structural similarity to inform their conclusions. A key part of regulatory authorization for food contact substances is ensuring that migration into food is limited by functional use conditions and specification requirements, reducing systemic exposure. Because PETROLEUM HYDROCARBONS, ODORLESS, LIGHT do not have a dedicated numeric ADI in primary international regulatory sources, this section uses general regulatory concepts to explain how ADIs are developed and why specific values are not presented here. Regulatory safety decisions emphasize limiting exposure through use conditions and compliance with specification criteria described in relevant CFR sections.

Comparison With Similar Additives

PETROLEUM HYDROCARBONS, ODORLESS, LIGHT belong to a broader class of petroleum hydrocarbon mixtures that includes various mineral oils and related fractions. A similar additive is "White Mineral Oil," which is another refined mixture of paraffinic and naphthenic hydrocarbons that meets defined specifications and can be listed under specific CFR sections for use in food contact materials. White mineral oil shares many functional characteristics with odorless light petroleum hydrocarbons, such as non‑polarity and minimal sensory impact, but specific boiling ranges and regulatory specifications differ, reflecting variations in composition. Another related material is "Synthetic isoparaffinic petroleum hydrocarbons," which are engineered hydrocarbon mixtures with controlled branching and carbon chain length distributions. These synthetic fractions can offer more uniform properties, such as lower volatility and predictable solvency, compared to natural petroleum fractions. Structurally, synthetic isoparaffinic hydrocarbons tend to have fewer cyclic or straight‑chain components, which can influence viscosity and solvency compared to the broader natural mixture found in PETROLEUM HYDROCARBONS, ODORLESS, LIGHT. Both related additives highlight how different hydrocarbon mixtures can be tailored for specific applications. While PETROLEUM HYDROCARBONS, ODORLESS, LIGHT provide a balance of properties suitable for coatings and processing aids, synthetic alternatives may be selected for applications requiring greater uniformity or defined performance characteristics. Finally, broader mineral oil classes evaluated by expert committees such as JECFA illustrate how toxicological assessments consider hydrocarbon composition, with different classes assigned varying ADI ranges based on their physical and chemical profiles. This comparison helps contextualize where PETROLEUM HYDROCARBONS, ODORLESS, LIGHT fit within the landscape of hydrocarbon‑based food contact substances.

Common Food Applications Narrative

PETROLEUM HYDROCARBONS, ODORLESS, LIGHT find use in several specific food processing applications where a non‑polar hydrocarbon medium supports manufacturing or preservation tasks. In the production and processing of eggs, this hydrocarbon fraction may be applied as a coating to shell eggs to help maintain quality and moisture balance during storage and transport. Because the mixture is odorless and meets defined specifications, it does not alter the sensory profile of the eggs while serving its functional purpose. In sugar processing, odorless light petroleum hydrocarbons can function as defoaming agents or processing aids during beet sugar and yeast handling stages. Their hydrophobic nature helps manage foam and support process control without interacting with aqueous food components. Similarly, in fermentation processes used to produce vinegar and wine, the hydrocarbon layer can float on fermentation fluids to limit air exposure, thereby preventing wild yeast contamination and excessive evaporation. Beyond direct handling of food products, this ingredient is recognized for use in paper and paperboard components or coatings that come into contact with dry foods. In these contexts, the hydrocarbon mixture supports material performance, such as improving moisture barriers, without migrating into food in significant amounts when applied within regulatory boundaries. Across these applications, the common thread is leveraging the non‑reactive and hydrophobic properties of PETROLEUM HYDROCARBONS, ODORLESS, LIGHT to facilitate processing and protect product quality in ways that align with specified good manufacturing practices.

Safety & Regulations

FDA

  • Approved: True
  • Regulation: 21 CFR 172.884

EFSA

  • Notes: No specific EFSA evaluation or E number found for this ingredient mixture.

JECFA

  • Notes: No specific JECFA specification or ADI found for this exact CAS identified mixture.

Sources

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