# Acetoin Propyleneglycol Ketal

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> Markdown URL: https://additivefacts.com/additives/acetoin-propyleneglycol-ketal.md

**Safety rating:** UNKNOWN
**CAS number:** 94089-23-3
**Category:** flavoring
**FDA GRAS:** no
**Adverse events (FDA AERS):** 0
**FDA recalls:** 0
**Last updated:** 2026-04-02

## Summary

Acetoin Propyleneglycol Ketal (CAS 94089-23-3) is a synthetic flavoring agent used to enhance or modify taste and aroma in food products. It functions as a flavoring adjuvant to create or strengthen desired sensory characteristics in processed foods and beverages.

## 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 Acetoin Propyleneglycol Ketal?

Acetoin Propyleneglycol Ketal is a synthetic organic compound classified as a flavoring agent. It is created through chemical synthesis combining acetoin with propylene glycol in a ketal formation. The substance exists as a colorless to pale yellow liquid with characteristic flavor and aroma properties that make it useful in food flavoring applications.

The chemical structure of this ketal compound allows it to provide flavor contributions through volatile components that interact with taste and smell receptors. Like other synthetic flavoring agents, it is designed to be used in very small concentrations to achieve desired flavor effects without contributing significantly to the nutritional profile of food products.

## Common Uses

Acetoin Propyleneglycol Ketal is used in the food industry as a flavoring agent or flavor adjuvant. Common applications include:

- Beverages (soft drinks, flavored waters, alcoholic beverages)
- Confectionery and candy products
- Baked goods and grain-based products
- Dairy products and desserts
- Savory snacks and processed foods

The substance is typically used at very low concentrations (parts per million range) to provide flavor enhancement, modification, or to mask undesirable tastes. It functions as part of complex flavor formulations designed by food manufacturers and flavor houses.

## Safety Assessment

Acetoin Propyleneglycol Ketal has not been formally designated as Generally Recognized as Safe (GRAS) by the FDA. However, the absence of a GRAS determination does not indicate that the substance is unsafe. Rather, it reflects that formal FDA review and confirmation has not been completed or requested.

The FDA database shows zero reported adverse events associated with this additive and zero recalls linked to its use. This absence of adverse event reports suggests that the substance has not been associated with documented safety incidents in the food supply.

As with most synthetic flavoring agents, safety assessment involves consideration of:

- Acute toxicity data from animal studies
- Subchronic and chronic toxicity studies
- Potential allergenicity
- Metabolic fate and clearance from the body
- Use levels and dietary exposure estimates

The propylene glycol component of this compound is a widely used food additive that has extensive safety data. The ketal structure itself represents a common chemical modification used in flavoring technology.

## Regulatory Status

In the United States, this additive is not on the FDA's official GRAS list, meaning it cannot be marketed as GRAS without prior FDA authorization. Manufacturers wishing to use this substance would need to either:

1. Obtain a Food Additive Petition (FAP) approval from the FDA, or
2. Notify the FDA under the Threshold of Regulation (TOR) exemption if use levels result in negligible dietary exposure

The regulatory status may differ in other jurisdictions. The European Union, under its food additive regulations, maintains separate approval processes and lists. Industry professionals should verify current regulatory approval in their specific markets before use.

## Key Studies

Limited peer-reviewed literature is publicly available specifically addressing Acetoin Propyleneglycol Ketal. Safety assessment of this compound would typically involve:

- Proprietary safety studies conducted by manufacturers or flavor companies
- General toxicology data on similar ketal-based flavoring compounds
- Comparative safety data on the individual component chemicals

When flavoring agents do not achieve GRAS status, detailed safety data is often maintained within proprietary regulatory submissions to the FDA rather than in published scientific literature. The absence of regulatory action or adverse event reports suggests that safety concerns have not been identified through available monitoring systems.

## 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. "Acetoin Propyleneglycol Ketal — Safety, regulation, and evidence." https://additivefacts.com/additives/acetoin-propyleneglycol-ketal. Accessed 2026-05-12.