Sodium hydrogencarbonate crystal particles having low caking property and process for producing them
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United States of America Patent
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Feb 3, 2009
Grant Date -
May 10, 2007
app pub date -
Jan 3, 2007
filing date -
Jul 1, 2004
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Expired
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Abstract
Sodium hydrogencarbonate crystal particles, which comprise sodium hydrogencarbonate crystal particles having an average particle size of from 50 to 500 μm based on the mass, and anhydrous sodium carbonate, and sodium carbonate monohydrate and/or Wegscheider's salt, present on the surface of the sodium hydrogencarbonate crystal particles in such amounts that the total content of anhydrous sodium carbonate, sodium carbonate monohydrate, Wegscheider's salt and sodium sesquicarbonate in the sodium hydrogencarbonate crystal particles is from 0.04 to 1 mass % as calculated as anhydrous sodium carbonate, anhydrous sodium carbonate accounts for at least 40 mass % of the total content, and sodium carbonate monohydrate and/or Wegscheider's salt accounts for from 5 to 60 mass % of the total content. Sodium hydrogencarbonate crystal particles having a low caking property, which are useful in the field of food products, pharmaceuticals, bath additives, etc., which require no necessity to contain an anticaking agent, a process for producing them and a method for packaging them, can be provided.
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