E242: Dimethyl Dicarbonate
Main role: beverage microbial control
Also listed as: DMDC
What is E242 (Dimethyl Dicarbonate)?
Dimethyl dicarbonate E242 is used during specified beverage processing to help control microorganisms. It reacts and breaks down in the treated beverage, making it different from a preservative chosen to remain unchanged in a food. Its use requires controlled processing conditions.
What does it do in food?
Its main role is beverage microbial control. Preservation is one part of a food safety system. Recipe acidity, processing, packaging, and storage also affect how a product keeps. Follow the finished product’s storage instructions even when a preservative is listed.
Food and formulation examples
- Specified wine applications
- Selected fruit drinks
- Other permitted beverage processing
These examples describe formulation roles, not a list of unrestricted legal uses. Availability and permitted applications differ by country and food category.
Label names and ingredient questions
Look for E242, E 242, or the ingredient name. Related names and label terms include DMDC. A family code can cover more than one specified form; check the full declaration when the distinction matters.
DMDC is a processing ingredient for manufacturers, not a household beverage treatment. A label or specification cannot replace the equipment and process controls required for its use.
Is E242 safe?
There is no meaningful personal risk estimate from an E number alone. Food-grade specifications, allowed uses, amount consumed, and individual circumstances all matter. The authorization record below gives the legal scope; it is not a claim that every possible use is appropriate.
A label identifies the ingredient but usually not its concentration. Calculating daily intake requires the amount in the food and the quantities eaten.
Authorization and conditions of use
The Great Britain food additive register lists E242 as Dimethyl dicarbonate. This is an entry subject to its stated conditions, not unrestricted permission for every food. The record links to the applicable authorization terms. For an EU product, use the European Commission food additive database to check the relevant food category and limits. Other countries may use different names or rules.