# item.guide
Side-by-Side Comparison Food Additives & E-Numbers

E224: Potassium Metabisulfite (Campden Salt) vs. E412: Guar Gum (Cold-Soluble Galactomannan)

Comparing 2 standards across 10 specifications. 10 key differences identified.

Comparing:
E224: Potassium Metabisulfite (Campden Salt)
E412: Guar Gum (Cold-Soluble Galactomannan)
E224: Potassium Metabisulfite (Campden Salt) →

E224 (Potassium Metabisulfite / K2S2O5) is a white crystalline powder releasing 57.6% sulfur dioxide by weight when dissolved in acidic liquids. INS 224, ADI is 0.7 mg/kg bw/day, the premier sanitizing and stabilizing agent in commercial winemaking.

View full E224: Potassium Metabisulfite (Campden Salt) spec sheet →
E412: Guar Gum (Cold-Soluble Galactomannan) →

E412 (Guar Gum) is a natural galactomannan hydrocolloid extracted from guar beans (Cyamopsis tetragonoloba). INS 412, ADI is Not Limited (Quantum Satis), boasting 8x the thickening power of cornstarch and hydrating completely in cold water.

View full E412: Guar Gum (Cold-Soluble Galactomannan) spec sheet →

Specification Comparison Table

10 Parameters
Parameter / Spec
E224: Potassium Metabisulfite (Campden Salt)
E412: Guar Gum (Cold-Soluble Galactomannan)
E-Number Code
E224 E412
INS / Codex Number
INS 224 INS 412
Functional Class
Preservative, Antioxidant, Sanitizer Thickener, Emulsion Stabilizer, Dietary Fiber
Acceptable Daily Intake (ADI)
0.7 mg / kg body weight per day (as SO2 equivalent) Not Limited (Quantum Satis)
Primary Mechanism
Releases free SO2 and potassium ions, neutralizing wild yeasts and preventing enzymatic must oxidation Entangles water molecules via extensive hydrogen bonding, producing high viscosity at low shear
Common Target Foods
Grape must, commercial wines, ciders, lemon juice concentrates, dried fruit processing Gluten-free baked goods, salad dressings, ice creams, sauces, instant soup powders
Dietary Compliance
Vegan, Halal, Kosher (Allergen labeling required) 100% Vegan (Guar bean seed endosperm), Halal, Kosher, Non-GMO
Safety Approval
EFSA Authorized / FDA GRAS (21 CFR 182.3637) EFSA Authorized / FDA GRAS (21 CFR 184.1339)
Chemical Formula
K2S2O5 —
Mannose to Galactose Ratio
— 2 : 1 (High galactose substitution enables instant cold water solubility)

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