Sodium propionate
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- Product Description
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Sodium propionate appears as a colorless, transparent crystalline or granular powder, odorless or with a slight acetic-propionic-butyric aroma. It is stable to light and heat but readily deliquesces in moist air. It dissolves easily in water and is slightly soluble in alcohol. Sodium propionate exhibits broad-spectrum antimicrobial activity against molds, yeasts, and bacteria—though it is ineffective against yeasts. Its antibacterial properties are comparable to those of propionic acid. It can be used as a preservative and anti-mold agent in products such as pastries, soybean products, dumpling wrappers, wonton wrappers, fresh-cut noodles, and cheese.
CAS No.: 137-40-6
Molecular formula: C3H5O2Na
Molecular weight: 96.06
Color and physical state: White crystals, granules, or crystalline powder.
Odor: Odorless or with a slight acetic-butyric aroma
Physicochemical Properties of Sodium Propionate
Project
Metrics
Sodium propionate (on a dry basis), W/%
99.0–100.5
Alkalinity Test
By inspection
Dry weight reduction, W/% ≤
1.0
Arsenic (mg/kg) ≤
3
Heavy metals (expressed as Pb) ≤ mg/kg
4
Iron (mg/kg) ≤
30
The amount and scope of addition are in accordance with GB2760-2024 regulations.
Food Name
Usage amount (g/kg)
Note
Soy-based products
2.5
Calculated based on propionic acid
Raw grain
1.8
Calculated based on propionic acid
Freshly Made Wet Noodle Products (such as noodles, dumpling wrappers, wonton wrappers, and shumai wrappers)
0.25
Calculated based on propionic acid
Bread
2.5
Calculated based on propionic acid
Pastries
2.5
Calculated based on propionic acid
Vinegar
2.5
Calculated based on propionic acid
Soy sauce
2.5
Calculated based on propionic acid
Liquid composite seasoning
2.5
Calculated based on propionic acid
Processed Meat Products (Raw Meat with Seasoning Additives)
3
Calculated based on propionic acid
Smoking, roasting, and grilling meats
3
Calculated based on propionic acid
Application areas
Sodium propionate
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