E1520: Propane-1,2-diol
Main role: carrying flavors and ingredients
Also listed as: propylene glycol, 1,2-propanediol
What is E1520 (Propane-1,2-diol)?
Propylene glycol is a specified diol used as a carrier in certain food ingredient preparations. It is distinct from ethylene glycol, a different compound associated with toxic exposures.
What does it do in food?
Its main role is carrying flavors and ingredients. A carrier helps incorporate another ingredient, while a processing ingredient may support a manufacturing step or coating. The final declaration and exposure depend on the application and the labeling rules in the relevant market.
Food and formulation examples
- Flavor carriers
- Color preparations
- Specified additive mixtures
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 E1520, E 1520, or the ingredient name. Related names and label terms include propylene glycol, 1,2-propanediol. A family code can cover more than one specified form; check the full declaration when the distinction matters.
Propylene glycol and ethylene glycol are not interchangeable. Food-grade purity and permitted carrier quantities remain relevant even though the compounds have similar-sounding names.
Is E1520 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 E1520 as Propane-1, 2-diol (propylene glycol). 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.