Benzaldehyde
Benzaldehyde

Benzaldehyde

Common names: Benzenecarboxaldehyde, Aldehyde benzene, Artificial cherry flavor, Artificial almond flavor, FEMA No. 2127.
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Published by Jordana Tobelem, RD, LDN — Last Updated on Apr 21, 2025
Medically reviewed by Dr. William Lin, MD
Benzaldehyde is a naturally occurring aromatic compound commonly used as a flavoring agent in the food industry, especially to replicate almond and cherry flavors. It is found in essential oils such as bitter almond oil and is synthesized for large-scale use in beverages, baked goods, and confectionery.[1] Its pleasant, nutty aroma and chemical stability make it an ideal additive for enhancing or imitating flavor profiles in processed foods.[1]
Despite its wide use, concerns have been raised about its potential toxicity at high concentrations, particularly due to its metabolic conversion to benzoic acid.[2] However, studies have shown that benzaldehyde is generally safe when used within regulated limits set by food safety authorities.[1][3] Its status as a GRAS (Generally Recognized as Safe) substance supports its continued use in food products under proper guidelines.[2]

Safety Overview

Regulatory Bodies

FDA (US)
The U.S. Food and Drug Administration classifies benzaldehyde as Generally Recognized as Safe (GRAS) for use in food as a flavoring agent when used in accordance with good manufacturing practices.[4]
Health Canada
Health Canada authorizes the use of benzaldehyde in food products within established limits to ensure safety for consumers.[5]
EFSA (Europe)
EFSA concluded that benzaldehyde does not raise safety concerns at its current levels of dietary intake and supports its use as a flavoring substance under the Flavouring Group Evaluation framework.[3]
WHO (World Health Organization)
The Joint FAO/WHO Expert Committee on Food Additives (JECFA) allocated an Acceptable Daily Intake (ADI) of 0–5 mg/kg body weight for benzaldehyde based on toxicity data indicating low risk at typical exposure levels.[6]

FDA GRAS

U.S. Food and Drug Administration – Generally Recognized as Safe (GRAS)
Current Status
Classified
Benzaldehyde is classified as GRAS (Generally Recognized as Safe) by the U.S. Food and Drug Administration when used as a flavoring agent in accordance with good manufacturing practices. This designation is based on a comprehensive evaluation of toxicological data, including animal studies and metabolic assessments, which demonstrate that benzaldehyde does not pose significant health risks at levels typically used in foods. The GRAS status affirms its long-standing use in the food industry and supports continued regulatory approval for flavor enhancement applications.[4]

EWG Rating

Environmental Working Group
  • EWG Rating: Benzaldehyde has an The Environmental Working Group (EWG) Skin Deep® rating of 4 (moderate hazard), primarily due to concerns related to irritation and limited data on long-term exposure.[7]
  • Level of Caution: EWG advises moderate caution for consumers using personal care products containing benzaldehyde, particularly for leave-on or fragrance-heavy formulations.[7]
  • Possible Health Risks: Potential risks include skin and eye irritation, allergic reactions, and limited evidence suggesting respiratory irritation upon prolonged exposure.[7]
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More about Benzaldehyde

  • Baked Goods: Almond cookies, cherry pie, marzipan
  • Beverages: Cherry soda, almond-flavored liqueurs, fruit punch
  • Confectionery: Hard candies, chewing gum, chocolate-covered cherries

Historical Use
Benzaldehyde has been used since the 19th century as a natural flavor extracted from bitter almonds and later synthesized for broader use in perfumes, flavorings, and pharmaceuticals.[1]
Current Exposure
Today, consumers are commonly exposed to benzaldehyde through flavored foods such as candies, soft drinks, and baked goods, as well as in personal care products and cleaning agents containing almond scent additives.[2]

Skin and Eye Irritation
Benzaldehyde may cause mild to moderate irritation upon contact with the skin or eyes, particularly in concentrated or repeated exposure scenarios.[1]
Respiratory Sensitization
Inhalation of benzaldehyde vapors can cause respiratory irritation, with symptoms such as coughing or throat discomfort observed in occupational settings.[2]
Allergic Reactions
Although rare, some individuals may experience hypersensitivity reactions, especially when benzaldehyde is used in fragranced products.[1]
Low Systemic Toxicity
Oral ingestion at low levels typically used in flavorings is considered non-toxic, with metabolism leading to benzoic acid and rapid excretion in humans and animals.[1]

Toxicological Studies
Animal studies have shown that benzaldehyde has low acute toxicity, with oral LD₅₀ values ranging from 800 to 1300 mg/kg in rats, and it is rapidly metabolized to benzoic acid, which is excreted in urine.[1]
Long-Term Safety
Chronic exposure studies in rats and dogs revealed no significant toxicological effects at dietary levels up to 400 mg/kg/day, supporting its safety when used within regulated limits in food and cosmetic applications.[1]

High-Risk Groups
Vulnerable populations such as infants, the elderly, and individuals with compromised liver function may have reduced metabolic capacity to convert benzaldehyde into benzoic acid, which could lead to increased systemic exposure.[1]
Health Impacts
While benzaldehyde is generally well-tolerated at low levels, sensitive individuals may be more prone to mucosal or dermal irritation, and precaution is advised in consumer products intended for children or those with existing sensitivities.[1]

Recommended Intake
The Joint FAO/WHO Expert Committee on Food Additives (JECFA) has established an Acceptable Daily Intake (ADI) for benzaldehyde of 0–5 mg/kg body weight, based on its low toxicity and rapid metabolism to benzoic acid and hippuric acid in humans.[6]

General Safety Level
Benzaldehyde is generally not considered a strong sensitizer and is widely regarded as safe for the majority of consumers at the low concentrations used in food and cosmetics.[1]
Sensitive Individuals
Some individuals, particularly those with pre-existing fragrance allergies or sensitivities, may experience mild allergic contact dermatitis or skin irritation upon exposure to benzaldehyde-containing products.[8]

FAQ

What is benzaldehyde?

Benzaldehyde is an aromatic organic compound commonly found in almonds and used as a flavoring and fragrance agent.

What does benzaldehyde smell like?

Benzaldehyde has a characteristic almond-like scent.

What is benzaldehyde used for?

Benzaldehyde is used in food flavoring, perfumes, cosmetics, and as a chemical intermediate in manufacturing.

References

  1. Andersen A., 2006. 'Final report on the safety assessment of Benzaldehyde', International Journal of Toxicology, 25(Suppl 1), pp.11-27. Available at: https://pubmed.ncbi.nlm.nih.gov/16835129/ ↩︎
  2. U.S. Food and Drug Administration (FDA), 2022. 'Everything Added to Food in the United States (EAFUS): Benzaldehyde'. Available at: https://www.cfsanappsexternal.fda.gov/scripts/fdcc/?set=FoodSubstances&id=BENZALDEHYDE ↩︎
  3. European Food Safety Authority (EFSA), 2006. 'Opinion of the Scientific Panel on food additives, flavourings, processing aids and materials in contact with food (AFC) on a request from the Commission related to Flavouring Group Evaluation 20 (FGE.20): Benzyl alcohols, benzaldehydes, a related acetal, benzoic acids, and related esters from chemical group 23', EFSA Journal, 4(1), pp.296. Available at: https://efsa.onlinelibrary.wiley.com/doi/10.2903/j.efsa.2008.729 ↩︎
  4. U.S. Food and Drug Administration n.d. Code of Federal Regulations Title 21 - Substances Generally Recognized as Safe Available at: https://www.ecfr.gov/current/title-21/chapter-I/subchapter-B/part-182 ↩︎
  5. Health Canada 2024 Assessment - Aldehydes Group: Benzaldehyde Available at: https://www.canada.ca/en/environment-climate-change/services/evaluating-existing-substances/assessment-aldehydes-group.html#toc14 ↩︎
  6. World Health Organization 2001 Benzaldehyde Available at: https://apps.who.int/food-additives-contaminants-jecfa-database/Home/Chemical/4726 ↩︎
  7. Environmental Working Group (EWG) 2024 'Benzaldehyde - EWG Skin Deep Cosmetics Database' Available at: https://www.ewg.org/skindeep/ingredients/700521-BENZALDEHYDE/ ↩︎
  8. Cosmetic Ingredient Review 2023 Safety Assessment of Benzaldehyde as Used in Cosmetics Available at: https://www.cir-safety.org/sites/default/files/Benzaldehyde.pdf ↩︎

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