E-numbers / Preservatives / E219

Sodium methylparaben

also: Sodium methyl para-hydroxybenzoate · Sodium salt of methylparaben

A synthetic preservative from the paraben family, added to stop mould, yeast and bacteria growing in food.

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E219Preservative · Synthetic

Sodium methylparaben

Parabens mildly mimic the hormone oestrogen, so they are treated as hormone disruptors.

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What sodium methylparaben is, what it does and where you will see it

Why it’s worth knowing. Parabens mildly mimic the hormone oestrogen, so they are treated as hormone disruptors. Early studies in pregnancy have linked higher paraben exposure to more anxious, withdrawn or aggressive behaviour in toddlers. Their close relatives, the propyl parabens, were banned from EU food in 2006 over effects on fertility.

What is it?

A synthetic preservative, the sodium salt of methylparaben (E218). The sodium form dissolves easily in water, so it is used in watery foods, but the body handles it the same way as methylparaben.

What does it do?

It works by damaging the outer membrane of microbes, which kills them and slows spoilage. As the water-soluble paraben, it suits liquid and high-moisture foods where the oil-based versions will not mix in.

Where you will see it

Allowed in a small set of foods rather than across the shelves: meat and fish pastes, jelly coatings on cured meats, marinades, seasoning sauces, some snacks and food supplements. It is far more common in cosmetics and medicines. On a label it reads 'sodium methyl p-hydroxybenzoate' or E219.

What the science says

It weakly mimics oestrogen

Parabens belong to a group called endocrine disruptors: chemicals that can interfere with the body's hormones. Methylparaben is the weakest oestrogen-mimic of the common parabens, but it still binds oestrogen receptors in lab tests and can interfere with how the body processes oestrogen. Whether the small amounts used in food matter for health is still debated.

Parabens show weak oestrogen-like activity in laboratory and animal tests and are classed as endocrine-disrupting chemicals.

2008Lab + animalDarbre & Harvey, Journal of Applied Toxicology

Parabens can inhibit 17-beta-hydroxysteroid dehydrogenase, an enzyme the body uses to process oestrogen.

2017LabEngeli et al., review in Critical Reviews in Toxicology

A Dutch government (RIVM) review concluded the safety limit for methyl and ethyl parabens may not fully cover effects on sperm production or effects seen at lower doses, and that guideline-compliant reproduction studies are lacking.

2017Regulatory reviewRIVM report 2017-0028

Exposure in pregnancy and child behaviour

The newest and most-discussed research looks at exposure during pregnancy, because parabens cross the placenta. The signal is real but should be read carefully: these are observational links, not proof of cause, and most paraben exposure comes from cosmetics and skincare rather than food.

In two European birth cohorts (Barcelona and France, 1,024 mother-child pairs), higher methylparaben in the third trimester was linked to children scoring higher for anxious, withdrawn and aggressive behaviour at 18 to 24 months.

2026ObservationalBiSC and SEPAGES cohorts, Toxics

In the US MARBLES study (207 pairs), prenatal exposure to a mix of phenols and parabens was associated with a higher chance of non-typical development by age 3, with methylparaben carrying the largest share of the effect.

2020ObservationalMARBLES study, Environment International

Allergy is mostly a skin issue

A minority of people are allergic to parabens. In practice this almost always shows as contact dermatitis from cosmetics, not from food. Parabens are part of the standard dermatology patch-test series for this reason.

Parabens can cause contact allergy and skin irritation in sensitised people, chiefly from cosmetic use.

EstablishedDermatology baseline patch-test series

Where it stands with the regulators

Approved for use in the UK and EU.

Legal basis: Listed as a permitted preservative under assimilated EU Regulation 1333/2008 (Annex II) and on the UK Food Standards Agency approved-additives list.
Permitted foods: Surface treatment and coatings on cured and dried meats; Meat and fish pastes; Certain snacks and confectionery coatings; Food supplements
Maximum levels: Use is capped, with the total of all parabens in a food generally limited to around 300mg/kg.
Safe-intake limit (ADI): EFSA set a group acceptable daily intake of 0 to 10mg/kg body weight per day, shared across the methyl and ethyl parabens (E214, E215, E218, E219).
History: In 2006 the propyl parabens (E216, E217) were removed from this group and banned from EU food after effects on sex hormones and reproductive organs in juvenile rats. The methyl and ethyl forms, including E219, were kept.

Who should be careful

If you are pregnant or buying for young children, it is reasonable to limit parabens where you easily can, given the early pregnancy-exposure research. On a label, look for any ingredient ending in '-paraben' or 'hydroxybenzoate' (E214 to E219). Anyone with a known paraben skin allergy should also check.

The honest read

Parabens sit in the genuinely unsettled part of additive science. The hormone-mimicking effect is well documented in the lab. The pregnancy-and-behaviour link is newer and rests on observational studies, not proof of cause. And the regulators who kept these additives still disagree over whether the safety limit covers low-dose effects. What is not in dispute: the closely related propyl parabens were pulled from food over reproductive concerns. The science here is live, not settled.

Common questions about sodium methylparaben

Is E219 banned in the UK?

No. E219 (sodium methylparaben) is on the UK Food Standards Agency approved-additives list and is permitted in a limited range of foods. The parabens banned from EU food in 2006 are the propyl parabens, E216 and E217, which are different additives.

Is E219 a hormone disruptor?

Parabens, including E219, are classed as endocrine disruptors because they weakly mimic the hormone oestrogen in laboratory and animal tests. Methylparaben is the weakest of the common parabens. Whether the amounts used in food affect health is still debated.

Should I avoid parabens during pregnancy?

Early research links higher paraben exposure during pregnancy to behavioural changes in young children, though this comes mostly from cosmetics rather than food and is not proof of cause. If you want to limit parabens, check both food labels and personal-care products for names ending in '-paraben' or 'hydroxybenzoate'.

What foods contain E219?

It is used in a small set of foods such as meat and fish pastes, jelly coatings on cured meats, marinades, seasoning sauces, some snacks and food supplements. It is much more widely used in cosmetics and medicines.

Is E219 vegan?

Yes. Sodium methylparaben is made synthetically with no animal-derived ingredients, so it is suitable for vegans and vegetarians, and is generally halal and kosher.