Methyl Paraben E218
paraben — Primarily synthetic.
Methyl 4-hydroxybenzoate
CAS: 99-76-3
Factual Regulatory Reference
This database provides factual regulatory information compiled from official government sources. It does not constitute medical, nutritional, or safety advice. Regulatory status varies by country and is subject to change. Always refer to your local regulatory authority for the most current information.
What Is Methyl Paraben?
Methyl paraben (E218) is the simplest and most widely used member of the paraben preservative family, a synthetic ester of p-hydroxybenzoic acid and methanol produced by acid-catalyzed esterification; it prevents microbial and fungal growth and is used in over 90% of cosmetic applications that contain parabens, as well as in pharmaceuticals and, to a limited extent, in beverages and processed foods. EFSA (2004) and JECFA (2007) established a group ADI of 10 mg/kg body weight per day for methyl and ethyl parabens combined. Methyl paraben is approved in the EU, USA (GRAS, 21 CFR 184.1490), Japan, Australia-NZ, and Canada; however, the European Commission classified all parabens as Category 1 endocrine disruptors in 2023, while the EU Scientific Committee on Consumer Safety (SCCS) simultaneously concluded in its 2023 opinion that methyl paraben at up to 0.4% is safe for cosmetic use — a distinction that reflects the different exposure routes and doses involved in cosmetics versus food applications.
? Did You Know?
Beyond food, Methyl Paraben is also used in cosmetics, medicine, industrial applications. Its versatility makes it one of the most multi-purpose chemical compounds in everyday life.
To reach the Acceptable Daily Intake limit, a 60kg adult would need to consume approximately ~15 applications cosmetic product applications (0.4% paraben, 10g) in a single day. (This is a mathematical illustration, not a safety recommendation.)
Regulatory Analysis
Methylparaben illustrates the regulatory challenge of managing a substance whose primary commercial significance lies in cosmetics (over 90% of use) while its food additive status draws it into an entirely separate safety evaluation framework. The 2023 EU classification of all parabens as Category 1 endocrine disruptors has not yet triggered food use restrictions for methyl and ethyl forms, creating a policy lag where the official hazard classification has outpaced the regulatory response. The finding that methylparaben shows no competitive binding to human estrogen or androgen receptors -- unlike its longer-chain relatives -- introduces a chain-length dependent structure-activity relationship that complicates the regulatory instinct to treat the paraben family as a single class.
Detailed Regulatory Assessment
European Union (EFSA)
Group ADI of 0-10 mg/kg bw/day for methyl and ethyl parabens; permitted as conditionally permitted preservative in limited food categories; cosmetics limited to 0.4% (or 0.8% for mixed parabens)
United States (FDA)
FDA recognizes as GRAS for food and cosmetic antibacterial preservation
Japan (MHLW)
Part of paraben group (5 types designated); used with usage standards
Acceptable Daily Intake (ADI)
International Standard (JECFA)
mg/kg body weight per day
European Standard (EFSA)
Everyday Perspective
For a 60kg adult, this limit is roughly equivalent to consuming:
Natural Occurrence
This additive is not known to occur naturally in significant quantities.
Manufacturing
Produced by esterification of p-hydroxybenzoic acid with methanol in the presence of an acid catalyst (typically sulfuric acid or hydrochloric acid). Industrial production uses continuous esterification processes followed by purification through crystallization.
Applications Beyond Food
Most widely used preservative in cosmetics, personal care products, shampoos, and lotions (up to 0.4%)
Extensively used in pharmaceutical preparations, oral medications, and topical products
Used in industrial products and coatings