Baby Safety / Compounds / Ethyl vanillin (bourbonal; 3-ethoxy-4-hydroxybenzaldehyde)

Is Ethyl vanillin (bourbonal; 3-ethoxy-4-hydroxybenzaldehyde) safe for babies and kids?

Moderate risk for kids

Infants are more vulnerable to Ethyl vanillin (bourbonal; 3-ethoxy-4-hydroxybenzaldehyde) than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

What is ethyl vanillin (bourbonal; 3-ethoxy-4-hydroxybenzaldehyde)?

The IUPAC name is 3-ethoxy-4-hydroxybenzaldehyde.

Also known as: 3-ethoxy-4-hydroxybenzaldehyde, ETHYL VANILLIN, Ethylvanillin, Bourbonal.

IUPAC name
3-ethoxy-4-hydroxybenzaldehyde
CAS number
121-32-4
Molecular formula
C9H10O3
Molecular weight
166.17 g/mol
SMILES
CCOC1=C(C=CC(=C1)C=O)O
PubChem CID
8467

Risk for babies

Moderate risk

Infants are more vulnerable to Ethyl vanillin (bourbonal; 3-ethoxy-4-hydroxybenzaldehyde) than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

Neonates and infants up to 12 months have incomplete blood-brain barrier development, immature Phase I/II metabolic enzymes (particularly CYP3A4, UGT1A1), and higher gastrointestinal permeability. Equivalent doses produce higher internal concentrations and longer residence times.

What to do: Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.

Risk for pregnant and nursing people

Context-dependent

Pregnancy alters the metabolism and distribution of Ethyl vanillin (bourbonal; 3-ethoxy-4-hydroxybenzaldehyde), potentially increasing fetal exposure. The developing embryo/fetus is vulnerable during organogenesis (weeks 3-8) and neurological development. Placental transfer should be assumed.

No specific reproductive toxicity data identified, but pregnancy-specific safety data is limited for most chemicals. Precautionary minimization of exposure is recommended.

What to do: Minimize exposure during pregnancy and lactation. Consult healthcare provider regarding specific risks. Consider alternative products with lower hazard profiles.

Regulatory consensus

3 regulatory and scientific bodies have classified Ethyl vanillin (bourbonal; 3-ethoxy-4-hydroxybenzaldehyde). The classifications differ — that's the data.

AgencyYearClassificationNotes
IARC2010Not evaluated by IARC for carcinogenicity — Ethyl vanillin (CAS 121-32-4; 3-ethoxy-4-hydroxybenzaldehyde; bourbonal; E-number: none — a flavoring substance permitted under EU Regulation 1334/2008 as FL No. 04.009; not a numbered EU food additive) is FDA GRAS (21 CFR 182.60) as a synthetic flavoring substance; JECFA ADI 3 mg/kg/day (established in 1967; lower than vanillin's 10 mg/kg/day ADI, reflecting higher potency and thus higher intake-on-a-flavor-unit basis); no IARC, EPA, or EFSA carcinogenicity classification; ethyl vanillin is the ethoxy analog of vanillin (vanillin has a methoxy group at C-3; ethyl vanillin has an ethoxy group), is purely synthetic (no natural occurrence in significant quantities), and is approximately 2–3 times more potent than vanillin on a weight basis — meaning much smaller quantities achieve the same flavor intensity; it is widely used as a cost-effective, high-impact vanilla flavor intensifier in chocolate, confectionery, and baked goods
EPA CTX / Genetox—Genotoxicity: positive (Ames: positive, 12 positive / 14 negative reports)
EPA CTX / Genetox—Genotoxicity: positive (Ames: positive, 12 positive / 14 negative reports)

Regulators apply different standards of evidence — animal-data weighting, exposure-pattern assumptions, epidemiological power thresholds — which is why two scientific bodies can review the same data and reach different conclusions. The disagreement is the data.

Where kids encounter ethyl vanillin (bourbonal; 3-ethoxy-4-hydroxybenzaldehyde)

  • Industrial Facilities — Manufacturing plants, Chemical storage areas, Waste treatment sites
  • Occupational Environments — Factories, Warehouses, Transportation vehicles

Safer alternatives

Lower-risk approaches that achieve a similar outcome to Ethyl vanillin (bourbonal; 3-ethoxy-4-hydroxybenzaldehyde):

  • Fragrance-free formulations
    Trade-offs: Consumer preference for scented products
    Relative cost: Lower (ingredient elimination)
  • Essential oil-based fragrances (with disclosure)
    Trade-offs: Natural does not mean safe — many essential oils are skin sensitizers
    Relative cost: 2-5× conventional

Frequently asked questions

Is ethyl vanillin (bourbonal; 3-ethoxy-4-hydroxybenzaldehyde) safe for kids?

Infants are more vulnerable to Ethyl vanillin (bourbonal; 3-ethoxy-4-hydroxybenzaldehyde) than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

What products contain ethyl vanillin (bourbonal; 3-ethoxy-4-hydroxybenzaldehyde)?

Ethyl vanillin (bourbonal; 3-ethoxy-4-hydroxybenzaldehyde) appears in: Manufacturing plants (Industrial facilities); Chemical storage areas (Industrial facilities); Factories (Occupational environments); Warehouses (Occupational environments).

What should I do if my child is exposed to ethyl vanillin (bourbonal; 3-ethoxy-4-hydroxybenzaldehyde)?

Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.

Why do regulators disagree about ethyl vanillin (bourbonal; 3-ethoxy-4-hydroxybenzaldehyde)?

Ethyl vanillin (bourbonal; 3-ethoxy-4-hydroxybenzaldehyde) has been classified by 3 agencies including IARC, EPA CTX / Genetox, EPA CTX / Genetox, with differing conclusions. Regulators apply different standards of evidence (animal data weighting, exposure-pattern assumptions, epidemiological power thresholds), which is why two scientific bodies can review the same data and reach different conclusions. See the regulatory consensus table on this page for the full picture.

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Sources (1)
  1. Ethyl Vanillin CAS 121-32-4 3-Ethoxy-4-Hydroxybenzaldehyde Bourbonal C9H10O3 FL04.009 FEMA 2422 No E-Number; FDA GRAS 21 CFR 182.60 Synthetic Only No Natural Occurrence; JECFA ADI 3 mg/kg/day 1967 Lower Than Vanillin 10 mg/kg/day; EFSA 2010 EFSA Journal 8(7):1634 No Safety Concern EDI 0.05-0.5 mg/person/day; 2-3x More Potent Than Vanillin by Weight Lower Odor Threshold ~0.0001 mg/L; Ethoxy vs Methoxy Group Structure-Activity; Chocolate Compound Chocolate Dominant Use 20-50 mg/kg; Guaiacol Ethylation 3-Ethoxyphenol Formylation Duff Reimer-Tiemann Production; Ethyl Vanillic Acid Conjugates Urinary Metabolites; Tobacco Palatability Enhancer Cigarette Smoothness EU TPD 2014/40/EU Characterizing Flavors Context; Negative Genotoxicity No Reproductive Toxicity (2010) — regulatory

Reference data, not professional advice. Aggregates publicly available regulatory and scientific data; not a substitute for veterinary, medical, legal, or regulatory advice. Why we built ALETHEIA →