Formic Acid (E236)

Type of additive
(Glossary)
Acidity Regulators, Preservatives
E NumberE236
Chemical FormulaCH2O2
Also Known AsFormylic acid
Methylic acid
Hydrogencarboxylic acid
Hydroxy(oxo)methane
Metacarbonoic acid
Oxocarbinic acid
Oxomethanol
Hydroxymethylene oxide

Purpose and Function

Formic Acid (E236) is used in the food industry as a preservative and acidity regulator. It helps prevent the growth of harmful microorganisms, thereby extending the shelf life of certain food products. Its applications include:

  • Beverages: Occasionally used in fruit juices and soft drinks to regulate acidity and prevent microbial growth.
  • Preserved vegetables: Used in pickled products and brines to inhibit the growth of bacteria and mold.
  • Animal feed: More commonly found in the preservation of animal feed, where it prevents spoilage and inhibits bacterial growth.
  • Fermentation: Can be used in some food fermentation processes to maintain the desired level of acidity.

Formic Acid (E236) is effective in acidic environments and can help in regulating the pH of various food products.


Potential Risks and Side Effects

Formic Acid (E236) has some risks and safety considerations that limit its use in the food industry:

  • Toxicity concerns: Formic acid can be toxic if consumed in large amounts. It is more commonly used for industrial purposes, and its use in food products is restricted.
  • Irritation: Can cause irritation to the skin, eyes, and respiratory system if there is significant exposure. It should be handled carefully in food processing.
  • Regulatory status: The use of E236 as a food additive is banned in some regions, including the European Union, due to safety concerns. In countries where it is permitted, its use is limited and regulated to ensure consumer safety.

Because of these safety concerns, Formic Acid (E236) is not widely used in food preservation and is subject to strict regulatory oversight.