Copper(II) Sulfate (E519)

Type of additive
(Glossary)		Preservatives
E NumberE519
Chemical Formula
CuSO4
Also Known AsCupric sulphate
Blue vitriol
Bluestone
Bonattite
Boothite
Chalcanthite
Chalcocyanite
Copper Sulphate pentahydrate
Copper(II) Sulfate (E519) food additive safety rating gauge

Purpose and Function

Copper(II) sulfate is primarily used as a nutritional supplement in food applications:

  • Nutritional Supplement: It provides copper, which is essential for various bodily functions, including iron absorption and immune function.
  • Antimicrobial Agent: It may exhibit antimicrobial properties, contributing to food preservation.
  • Improves Shelf Life: By preventing microbial growth, it helps enhance the shelf life of food products.
  • Flavor Enhancer: It can enhance the overall flavor profile of food products.

Potential Risks and Side Effects

Copper(II) sulfate is generally regarded as safe for consumption in regulated amounts. However, some concerns include:

  • Gastrointestinal Issues: High concentrations may lead to gastrointestinal discomfort, including nausea or vomiting.
  • Toxicity: In excessive amounts, copper(II) sulfate can be toxic, necessitating careful regulation in food applications.
  • Contaminants: Sourcing from reputable suppliers is essential to minimize the risk of contaminants in food formulations.