Physical and chemical properties
Description: This product is white crystal or crystalline powder, odorless, slightly bitter taste; light color gradient; soluble in water, a part of a glucuronic acid lactone, reached an equilibrium state, acidic reaction.
Solubility: This product is soluble in water, slightly soluble in methanol, slightly soluble in ethanol.
Melting point: This product is 170 to 176 DEG C melting point, melting and decomposition.
Curl: take this product, precision said, according to the determination of water dissolved and diluted solution, make quantitative every 1ml contains about 0.1g, at 25 DEG C than the rotation of +18.0 to 20 deg.
Clarity and color of the solution: take this product 1.0g, add water 10ml solution, the solution should be clear and colorless.
Dry weight loss: take this product at 80 DEG C dried to constant weight, reduce weight loss shall not exceed 0.5% (Appendix VIII L).
Residue: not over 0.1%.
Heavy metals: take this product 1.0g, according to the law, the heavy metal must not exceed ten parts per million.