silicon dioxide
Basic Information
| Field | Content |
|---|---|
| Chinese name | silicon dioxide |
| English name | silicon dioxide |
| INS/E number | INS 551 |
| Functional class | Anticaking agent, Antifoaming agent, Carrier |
| Year adopted | 1965 |
| Approved by | Australia/New Zealand (FSANZ), European Union (EFSA) |
What is it?
Silicon dioxide (amorphous) is an inorganic anticaking agent mainly used to prevent caking of powdered foods. Insoluble and non-digestible, it physically adsorbs moisture to keep powders flowing.
Source
Industrial：由硅酸钠酸化或硅砂气相法制得无定形二氧化硅
Why is it used?
- Acts as an anticaking agent for powders
- Adsorbs moisture to keep flow
- Serves as a carrier and dispersion aid
- Keeps flavours and seasonings free-flowing
Common Foods
- Table salt and salt substitutes
- Spice powders
- Coffee whiteners
- Instant beverage powders
- Confectionery
Safety
ADI (Acceptable Daily Intake)：Not applicable (evaluated, no limit set)
Concerns：
- 按规定使用量使用（通常≤2%）
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 551)
- FDA 21 CFR 182.90 (silicon dioxide, GRASS)
- Codex GSFA (INS 551)
- FSANZ Food Standards Code (551)
In a nutshell
Silicon dioxide is a widely used food anticaking agent that is neither absorbed nor metabolised, with high safety.
Consumer Advice
Silicon dioxide, commonly known as silica, is one of the most widely used food anticaking agents. It is added to table salt, icing sugar, spices and milk powder to prevent caking and keep powders flowing freely. It is insoluble and not absorbed by the body, passing through the digestive tract unchanged. It is universally regarded as one of the safest food additives and is permitted worldwide.
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.