Product
Sodium Stearate Pharmaceutical Grade
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DESCRIPTION
Product name: Sodium Stearate
Other names: Stearic acid sodium salt
Cas No.: 822-16-2
Chemical formula: C18H35NaO2
Characters: Sodium stearate is the sodium salt of stearic acid.Purified sodium stearate can be made by neutralizing stearic acid with sodium hydroxide. It is white solid powder with slight tallow-like odor. It is soluble in water, slightly soluble in ethanediol.
SPECIFICATION
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Items |
Specification |
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Standard |
USP |
BP |
FOOD GRADE |
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Assay Na. % |
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7.4-8.5 |
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Acid value |
196-211 |
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196-211 |
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Iodine, % |
≤4.0 |
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≤4.0 |
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Choride, % |
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≤0.2 |
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Sulfate, % |
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≤0.3 |
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Acidity, % |
0.28-1.2 |
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0.28-1.2 |
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Loss on drying, % |
≤5.0 |
≤5.0 |
≤4.0 |
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Alcohol-insoluble substance |
Meet requirements |
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Organic volatile impurities |
Meet requirements |
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Heavy metals, ppm |
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≤15 |
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Arsenic, ppm |
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≤3 |
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Stearic acid, % |
≥40.0 |
≥40.0 |
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Stearic acid and palmitic acid, % |
≥90.0 |
≥90.0 |
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APPLICATION
Sodium stearate has both hydrophilic and hydrophobic parts, the carboxylate and the long hydrocarbon chain, respectively. These two chemically different components induce the formation of micelles, which present the hydrophilic heads outwards and their hydrophobic (hydrocarbon) tails inwards, providing a lipophilic environment for hydrophobic compounds.
The tail part dissolves the grease (or) dirt and forms the micelle. It is also used in the pharmaceutical industry as a surfactant to aid the solubility of hydrophobic compounds in the production of various mouth foams.
STORAGE
Storage: Store in closed package and avoid from moisture and strong sun light.
PACKAGE
Sodium Stearate package can be customized according to customers' requirements. If no special instruction, it is packed in 20kg PE bag.
SHELF LIFE
3 years from the date of manufacturing.
