Food Additives Encyclopedia

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ammonium hydroxide ​

Basic Information ​

FieldContent
Chinese nameammonium hydroxide
English nameammonium hydroxide
INS/E numberINS 527
Functional classAcidity regulator
Year adopted1965
Approved byEuropean Union (EFSA)

What is it? ​

Ammonium hydroxide is an aqueous solution of ammonia used in foods as a processing aid and acidity regulator, and in cocoa processing and fermentation support. It is volatile and generally leaves no residue.

Source ​

Industrial：由合成氨溶于水制得氢氧化铵溶液

Why is it used? ​

  • Acts as an acidity regulator adjusting pH
  • Used in cocoa processing to remove shells
  • Assists in baking and fermentation
  • Serves as a deodorising processing aid

Common Foods ​

  • Cocoa and chocolate
  • Bakery products
  • Fermented foods
  • Processing aid (not directly added)
  • Some confectionery

Safety ​

ADI (Acceptable Daily Intake)：Not applicable (evaluated, no limit set)

Concerns：

  • 过量有氨味
  • 肾功能异常者需限制铵摄入

Usage Standard ​

China：GB 2760《食品安全国家标准 食品添加剂使用标准》（加工助剂）

International：

  • EU Regulation 1333/2008 Annex II (E 527)
  • FDA 21 CFR 184.1139 (ammonium hydroxide, GRASS)
  • Codex GSFA (INS 527)
  • FSANZ Food Standards Code (527)

In a nutshell ​

Ammonium hydroxide is a volatile processing aid and acidity regulator used mostly in cocoa and fermentation.

Consumer Advice ​

Food-grade ammonium hydroxide is used as an acidity regulator and processing aid, for example to adjust pH in beverages and foods and in caramel-colour production. Most of the ammonia evaporates or is neutralised during processing, leaving negligible residue. Used to food-grade standards it is safe, with no pungent smell remaining in the finished product.

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.