# Gutta Hang Kang (palaquium Leiocarpum Boerl. And P. Oblongifolium Burck.)

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**Safety rating:** UNKNOWN
**CAS number:** 9007-97-0
**Category:** other
**FDA GRAS:** no
**Adverse events (FDA AERS):** 0
**FDA recalls:** 0
**Last updated:** 2026-04-02

## Summary

Gutta Hang Kang is a natural masticatory substance derived from two species of Palaquium trees native to Southeast Asia. It is used in chewing gums and similar products as a gum base component that provides texture and chewability.

## 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 Gutta Hang Kang?

Gutta Hang Kang is a natural polymer extracted from the latex of Palaquium leiocarpum and Palaquium oblongifolium, tree species native to Malaysia and Indonesia. The name "gutta hang kang" is derived from traditional Southeast Asian terminology for tree-derived gum materials. This substance belongs to the broader category of natural masticatory substances and gum bases historically used in traditional chewing preparations across Asia.

The material consists primarily of polyisoprene and related hydrocarbons, giving it rubber-like properties. CAS Number 9007-97-0 identifies this specific substance in chemical databases.

## Common Uses

Gutta Hang Kang functions primarily as a masticatory substance in chewing gum formulations. It serves as a gum base component that provides the characteristic texture, elasticity, and chewability of gum products. The substance may be used alone or combined with other gum base ingredients such as synthetic polymers, waxes, and resins to achieve desired organoleptic properties.

Historically, natural gum materials from Palaquium species have been used in traditional preparations across Southeast Asia. Modern food applications are limited, as most commercial gum bases now rely on synthetic alternatives or other natural polymers with more extensive safety documentation.

## Safety Assessment

According to FDA records, Gutta Hang Kang has generated zero adverse event reports and zero product recalls. The substance is not listed on the FDA's Generally Recognized as Safe (GRAS) list, which means it has not undergone formal GRAS notification or affirmation proceedings in the United States.

The lack of adverse events in FDA databases suggests no reported safety incidents associated with this substance. However, the absence of GRAS status indicates limited formal regulatory review or commercial use tracking in the U.S. market. Natural masticatory substances of this type are generally considered low-risk due to their minimal absorption through the gastrointestinal tract—gum base materials are typically expectorated rather than swallowed.

No significant toxicological studies specific to this substance appear in major scientific databases, reflecting limited modern commercial application. Related natural polymers and gum bases have undergone safety evaluations with generally favorable outcomes, but substance-specific data is sparse.

## Regulatory Status

In the United States, Gutta Hang Kang does not have FDA GRAS status. This does not indicate the substance is unsafe; rather, it reflects that formal safety petitions or GRAS notifications have not been submitted to the FDA, or such submissions have not been affirmatively concluded.

The substance may be permitted in certain food applications under other regulatory frameworks in other countries, but specific approvals vary by jurisdiction. European Food Safety Authority (EFSA) documentation does not appear to include formal assessments of this particular substance.

Manufacturers wishing to market products containing Gutta Hang Kang in the United States would need to either submit a GRAS notification to the FDA or obtain pre-market approval as a food additive.

## Key Studies

Limited peer-reviewed scientific literature exists specifically examining Gutta Hang Kang. Published toxicological or safety studies on this particular substance are not readily available in major databases such as PubMed or EFSA assessments.

General research on natural gum bases and masticatory polymers indicates these materials present minimal toxicological concern due to poor gastrointestinal absorption and lack of systemic bioavailability. However, substance-specific safety data would be necessary to make definitive conclusions about Gutta Hang Kang.

The absence of published research may reflect limited current commercial use rather than a safety concern. Manufacturers would be expected to provide safety data during regulatory approval processes.

## 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. "Gutta Hang Kang (palaquium Leiocarpum Boerl. And P. Oblongifolium Burck.) — Safety, regulation, and evidence." https://additivefacts.com/additives/gutta-hang-kang-palaquium-leiocarpum-boerl-and-p-oblongifolium-burck. Accessed 2026-05-19.