Processed
Silicon Dioxide
Silicon dioxide (silica) is an inert anti-caking agent used as a fine white powder to keep salt, spices, powdered drinks, and dry mixes free-flowing. Food grades are amorphous silica or silica gel particles that adsorb moisture and reduce clumping without adding flavour. Typical use levels are low—often fractions of a percent—so the powder is felt more in flow than on the tongue. It does not dissolve in water; it stays as microscopic particles distributed through the mix. Choose food-grade amorphous forms specified for ingestion; industrial crystalline quartz dust is a different material and not a culinary substitute.
Also known as: E551, Silicon dioxide (E551), Silicon dioxide, Nisanka keiso, Amorphous silica
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Characteristics
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Traits
Nutrition and pairings
Nutrition
Typical values per 100 g edible portion. Nutrient names open the reference page.
Nutrition Facts
Per 100 g edible portion
Amount per 100 g
- Total Fat 0 g
- Saturated Fat 0 g
- Trans Fat 0 g
- Monounsaturated Fat 0 g
- Polyunsaturated Fat 0 g
- Cholesterol 0 mg
- Sodium 0 mg
- Salt 0 g
- Total Carbohydrate 0 g
- Dietary Fibre 0 g
- Total Sugars 0 g
- Complex / starch 0 g
- Protein 0 g
- Water 0.5 g
- Water 0.5 g
Amorphous silicon dioxide (silica) is an anti-caking agent, not a food. It is chemically inert in the gut: 0 kcal and 0 macros. Typical food-grade powder holds a little adsorbed moisture and no vitamins or sugars.
In the kitchen
Culinary partners and combinations that usually underperform with Silicon Dioxide.
Usually avoid with
Often clash in flavour or tradition
History
Synthetic amorphous silica entered industrial powders as a flow aid.
Food regulations approved silicon dioxide as an anti-caking agent in salt and spices.
Instant beverage and soup mixes standardised silica for shelf stability.
Clean-label scrutiny pushed transparent declaration of anti-caking silicas on packs.