USP Standard


USP Standard-CPC Titration

item specification
Identification (1) infrared absorption <197K>
(2) a solution containing 0.5 g in 10 ml of water meets the requirements of the test for sodium <191>.
Clarity and color of solution Its absorbance is not greater than 0.35.
Specific rotation <781S> -20 °~ -30.0°
Microbial enumeration <2021> The total bacterial count does not exceed 1000 cfu / g, and the total combined molds and yeasts count does not exceed 100 cfu / g. It meets the requirements of the tests for absence of Salmonella species, and Escherichia coli.
pH <791> 5.5 ~ 7.5 in a solution (1 in 100)
Loss on drying <731> Not more than 10.0%
Residue on ignition <281> 20.0% ~ 30.0%
Chloride <221> Not more than 0.50%
Sulfate <221> Not more than 0.24%
Heavy metals, Method II <231> Not more than 0.002%.
Organic volatile impurities, Method I Ethanol: not more than 0.5%
Electrophoretic purity <726> Any individual impurity: not more than 2%.
Limit of protein Not more than 6.0%
Content of chondroitin sulfate sodium 90.0%~105.0%

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