Sodium Benzoate | whatsinit

About

What it is and where it shows up.

Sodium benzoate is the sodium salt of benzoic acid — a white, odorless, water-soluble crystalline powder with antifungal and antibacterial properties used to inhibit the growth of bacteria, yeast, and mold. It is widely applied as a preservative in acidic food products such as carbonated drinks, sauces, pickles, jams, and fruit preserves.

Safety summary

The regulatory and scientific consensus.

EFSA and WHO/JECFA established an Acceptable Daily Intake (ADI) of 5 mg/kg body weight per day; toddlers and children who regularly consume flavored drinks may exceed this ADI under brand-loyal consumption scenarios. Some in vitro studies report weak genotoxic effects, oxidative stress, and adverse effects on liver and kidney function, though regulatory reviews have found no carcinogenic potential. A concern exists regarding benzene formation when sodium benzoate reacts with ascorbic acid (vitamin C) in acidic beverages under certain conditions.

Regulatory landscape

What food-safety regulators have decided.

Jurisdiction	Status	Note
EFSA (European Food Safety Authority) (European Union)	Approved	Permitted preservative under EU Regulation (EC) No. 1333/2008 and Commission Regulation (EU) No. 1129/2011; maximum permitted use levels range from 150 to 2000 mg/kg depending on food category (e.g., low-percentage alcoholic beverages, non-alcoholic beers, low-sugar jams). ADI of 5 mg/kg bw/day expressed as benzoic acid equivalents. Benzene formation concern noted in soft drinks co-containing ascorbic acid.source
FSSAI (Food Safety and Standards Authority of India) (India)	Approved	Listed as a permitted preservative under INS 211 in the Food Safety and Standards (Food Products Standards and Food Additives) Regulations, 2011, Chapter 3. Purity requirement ≥99.0% as C7H5O2Na; also listed in FSSAI Appendix C as a permitted food additive.source
FDA (Food and Drug Administration) (United States)	Approved	Generally Recognized as Safe (GRAS) under 21 CFR 184.1733; historically the first food preservative approved by the FDA. Permitted at levels consistent with Good Manufacturing Practice (GMP). No separate mg/day ADI set by FDA.source

Who should approach with care

Whose guidance would steer them away.

Children — EFSA's 2016 re-evaluation found the group ADI of 5 mg/kg bw/day can be exceeded in toddlers and children who regularly consume flavored drinks and other sodium benzoate-containing foods under brand-loyal consumption scenarios.

Infants — Infants are particularly vulnerable to ADI exceedance due to their low body weight relative to dietary exposure; EFSA highlighted this risk across high-level consumption scenarios including carry-over from processed ingredients.

Pregnancy — In vitro evidence of weak genotoxic effects and animal data suggesting reproductive toxicity at high doses (PubMed PMC9003278) warrant precautionary reduction of intake during pregnancy.

Liver Disease — Sodium benzoate undergoes hepatic conjugation to hippurate before renal clearance; published research indicates it may exert adverse effects on liver function, requiring medical guidance for those with pre-existing hepatic conditions.

Kidney Disease — Sodium benzoate is renally cleared as hippurate; impaired kidney function can reduce clearance, increasing systemic exposure and potential for adverse metabolic effects as documented in human metabolic profiling studies (PMID:25497115).

Research citations

The sources behind this verdict.

1FDA. Code of Federal Regulations Title 21, Section 184.1733 – Sodium Benzoate. accessdata.fda.gov
2PubMed. Sodium Benzoate—Harmfulness and Potential Use in Therapies for Disorders Related to the Nervous System: A Review, 2022. pmc.ncbi.nlm.nih.gov
3EFSA. Re-evaluation of benzoic acid (E 210), sodium benzoate (E 211), potassium benzoate (E 212) and calcium benzoate (E 213) as food additives, 2016. efsa.europa.eu
4PubMed. Effects of sodium benzoate, a widely used food preservative, on glucose homeostasis and metabolic profiles in humans, 2015. pubmed.ncbi.nlm.nih.gov
5FSSAI. Food Safety and Standards (Food Products Standards and Food Additives) Regulations, 2011 – Chapter 3: Substances Added to Food, 2011. fssai.gov.in
6other. European Parliament Answer to Written Question E-3354/08 on Sodium Benzoate in Food, 2008.

Independently researched6 citations