Food Additives Encyclopedia

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cupric sulfate ​

Basic Information ​

FieldContent
Chinese namecupric sulfate
English namecupric sulfate
INS/E numberINS 519
Functional classMineral salt
Year adopted1969
Approved byAustralia/New Zealand (FSANZ)

What is it? ​

Cupric sulfate is an inorganic copper salt used in foods as a colour-retention agent (stabilising chlorophyll in green vegetables), a nutrient supplement and a processing aid. Copper is an essential trace element but intake must be strictly controlled.

Source ​

Industrial：由铜与硫酸反应制得硫酸铜

Why is it used? ​

  • Retains green colour in vegetables
  • Supplements copper as a nutrient
  • Acts as a colour aid in olive processing
  • Used in some fermentation and brewing

Common Foods ​

  • Canned peas and green vegetables
  • Olives
  • Fortified foods
  • Some condiments
  • Processing aid

Safety ​

ADI (Acceptable Daily Intake)：0-0.5 mg/kg bw (as Cu)

Concerns：

  • 铜过量有蓄积毒性
  • 残留量受法规严格限制

Usage Standard ​

China：GB 2760《食品安全国家标准 食品添加剂使用标准》

International：

  • EU Regulation 1333/2008 Annex II (E 519)
  • Codex GSFA (INS 519)
  • FSANZ Food Standards Code (519)

In a nutshell ​

Cupric sulfate is a vegetable colour-retention agent and copper supplement with residues strictly controlled.

Consumer Advice ​

Cupric sulfate is a copper mineral salt used in food mainly as a copper fortificant (copper is an essential trace element) in tiny amounts in beverages and nutritional products, and for colour retention in vegetable processing. Its use is tightly restricted with a JECFA ADI. Normal food use is safe; excessive copper can irritate the gut, but strict limits mean consumers need not worry.

Dietary Restrictions ​

  • Vegan: ✅
  • Halal: ✅
  • Kosher: ✅

Allergens ​

✅ Free from common allergens

Disclaimer ​

The information provided here is for discussion and educational purposes only. It is not medical advice or an evaluation/rating of any product or ingredient. This information may not apply to you; before using or taking any action, you should contact the manufacturer, vendor, medical, dietary, fitness, or other professionals. If you use any information provided here, you do so at your own risk.