E170: Calcium Carbonate (Mineral White Color / Anti-Caking) vs. E290: Carbon Dioxide (Carbonation & MAP Gas)
Comparing 2 standards across 9 specifications. 8 key differences identified.
E170 (Calcium Carbonate / CaCO3) is a fine mineral salt mined from limestone or precipitated synthetically. INS 170(i), ADI is Not Limited (Quantum Satis), serving as a white surface colorant, acidity buffer, anti-caking agent, and calcium nutrient fortificant.
E290 (Carbon Dioxide / CO2) is an authorized food additive functioning as a carbonating gas, modified atmosphere packaging (MAP) preservative, and cryogenic freezing propellant. INS 290, ADI is Not Limited (Quantum Satis).
Specification Comparison Table
9 Parameters| Parameter / Spec | ||
|---|---|---|
|
E-Number Code
|
E170 | E290 |
|
INS / Codex Number
|
INS 170(i) | INS 290 |
|
Functional Class
|
Food Color (White / Opacifier), Anti-Caking, Acidity Regulator, Nutrient | Carbonating Gas, Packaging Gas, Preservative, Propellant |
|
Acceptable Daily Intake (ADI)
|
Not Limited (Quantum Satis) | Not Limited (Quantum Satis) |
|
Chemical Formula
|
CaCO3 | CO2 |
|
Primary Mechanism
|
High refractive index light scattering creating white opacity; neutralizes acids to calcium salts and CO2 | Dissolves in water forming carbonic acid (H2CO3) for effervescence; displaces O2 in packaging to block aerobic mold growth |
|
Common Target Foods
|
Chewing gum coatings, plant milks (Soy/Almond calcium fortification), baking powders, tablets | Carbonated soft drinks, sparkling water, beer, champagne, MAP bagged salads, fresh meats |
|
Dietary Compliance
|
Vegan (Mineral limestone), Halal, Kosher | 100% Vegan, Halal, Kosher |
|
Safety Approval
|
EFSA Authorized / FDA GRAS (21 CFR 184.1191) | EFSA Authorized / FDA GRAS (21 CFR 184.1240) |