# Cis- And Trans-2-isopropyl-4-methyl-1,3-dioxolane

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**Safety rating:** UNKNOWN
**CAS number:** 67879-60-1
**Category:** flavoring
**FDA GRAS:** no
**Adverse events (FDA AERS):** 0
**FDA recalls:** 0
**Last updated:** 2026-04-02

## Summary

Cis- and trans-2-isopropyl-4-methyl-1,3-dioxolane is a synthetic flavoring compound used to impart specific aromatic characteristics to food products. It functions as a flavoring agent or adjuvant in processed foods where it contributes to complex flavor profiles.

## Regulatory status

| Country | Status |
| --- | --- |
| United States | approved |
| European Union | not_evaluated |
| United Kingdom | not_evaluated |
| Canada | not_evaluated |
| Australia | not_evaluated |
| Japan | not_evaluated |
| South Korea | not_evaluated |
| Brazil | not_evaluated |
| China | not_evaluated |
| India | not_evaluated |

## Detailed analysis

## What is Cis- and Trans-2-isopropyl-4-methyl-1,3-dioxolane?

Cis- and trans-2-isopropyl-4-methyl-1,3-dioxolane (CAS Number: 67879-60-1) is a synthetic organic compound belonging to the dioxolane family of chemicals. It exists in two isomeric forms—cis and trans—which are mirror-image configurations of the same molecular structure. These isomers may have slightly different sensory properties despite identical chemical composition. The compound is a colorless to pale yellow liquid used exclusively in the flavor industry.

## Common Uses

This flavoring agent is utilized in processed food manufacturing to enhance or modify taste and aroma profiles. Due to its synthetic nature and specific chemical structure, it is employed in small quantities as part of complex flavor formulations. The compound typically appears in products where sophisticated or nuanced flavor development is desired, such as baked goods, beverages, dairy products, and confectionery items. As with most synthetic flavoring agents, the actual amount used in finished food products is minimal—typically measured in parts per million (ppm).

## Safety Assessment

According to FDA records, there are zero reported adverse events associated with this additive and zero product recalls linked to its use. The compound has not been associated with any documented health incidents in the food supply. However, it is important to note that this additive has not received formal GRAS (Generally Recognized As Safe) status from the FDA, which means it has not undergone the comprehensive safety review process that results in official approval for use in food.

The absence of GRAS status does not necessarily indicate a safety concern; rather, it suggests that formal safety evaluation through standard regulatory channels has not been completed or submitted. Some flavor compounds operate under other regulatory frameworks or have been in use based on historical evidence of safety.

## Regulatory Status

In the United States, cis- and trans-2-isopropyl-4-methyl-1,3-dioxolane does not hold FDA GRAS status. This means it may be used under specific regulatory conditions or may require additional documentation for compliance with FDA regulations governing food additives. The lack of GRAS designation places it in a different regulatory category than broadly approved flavoring agents.

Regulatory status varies internationally. Different countries maintain different approval processes for flavor chemicals, and approval in one jurisdiction does not necessarily extend to others. Manufacturers using this compound must ensure compliance with regulations in countries where their products are distributed.

## Key Studies

Limited published scientific literature specifically addresses this particular isomer combination. The compound represents a specialized ingredient within the synthetic flavor chemistry field, where safety assessments are typically conducted by manufacturers and submitted to regulatory agencies as part of proprietary flavor formulation submissions.

Safety evaluation of similar dioxolane-based compounds and structure-activity relationship (SAR) analyses provide indirect evidence regarding potential safety profiles. These indicate that properly manufactured dioxolane compounds generally present minimal toxicological concern at the concentrations used in food flavoring applications.

The absence of adverse event reports and recalls provides real-world reassurance regarding safety in commercial food applications. However, comprehensive toxicological data specific to this compound may not be publicly available, as such information is often maintained in manufacturer confidential submissions to regulatory bodies.

## Sources

- FDA Substances Added to Food (CFSAN)
- OpenFDA Adverse Event Reporting System (AERS)
- OpenFDA Food Recalls
- EFSA OpenFoodTox
- EU Food Additive Portal

## Citation

Additive Facts. "Cis- And Trans-2-isopropyl-4-methyl-1,3-dioxolane — Safety, regulation, and evidence." https://additivefacts.com/additives/cis-and-trans-2-isopropyl-4-methyl-1-3-dioxolane. Accessed 2026-05-19.