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sodium propionateCAS: 137-40-6

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Synonyms: Sodium propionate; propionic acid sodium type I; propionic acid sodium insect cell*culture tested; Propanoic acid, sodium salt Classification: Preservatives
EINECS: 205-290-4 Molecular Formula: C3H5NaO2
Melting Point: 285-286℃ Boiling Point: 141.7°Cat760mmHg
Stability: Stable. Incompatible with strong oxidizing agents. Hygroscopic. Water Solubility: 995 g/L (20℃)
Refractive index: Flash Point: 57.7°C
Purity: Appearance: white crystalline powder
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sodium propionate
CHEMICAL NAME: Sodium Propionate
C.A.S.: [137-40-6]
Sodium propionate has the formula C 3 H 5 NaO 2 , It is the sodium salt of propionic acid.              
[1]  As a food additive, it is listed as E number 281 in the Codex Alimentarius. sodium propionate is used as a preservative in a wide variety of products, including but not limited to bread, other baked goods, processed meat, whey, and other dairy products. 
[2] In agriculture, it is used, amongst other things, to prevent milk fever in cows and as a feed supplement.
[3]  Propionates prevent microbes from producing the energy they need, like benzoates do. However, unlike benzoates, propionates do not require an acidic environment.
[4]  sodium propionate is used in bakery products as a mold inhibitor, typically at 0.1-0.4%.

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