Ascorbic Acid Impurity 9(CAS: 490-83-5)

Ascorbic Acid Impurity 9 (CAS: 490-83-5) is a crystalline solid with a molecular weight of approximately 176.12 g/mol. It is moderately soluble in water but insoluble in most organic solvents. The impurity exhibits limited reactivity, particularly in the presence of oxidizing agents or heat. It has a melting point around 150-165°C and can be characterized by its acidic pH and UV/visible absorbance at 242 nm.

Ascorbic Acid Impurity 9 (CAS: 490-83-5) is synthesized through chemical modifications of ascorbic acid, often involving oxidation or reduction reactions. Common catalysts include transition metals like copper or manganese. The synthesis typically involves controlled conditions to achieve high yield and selectivity, although the specific process may vary depending on the desired impurity profile.

Ascorbic Acid Impurity 9 (CAS: 490-83-5) is used in the pharmaceutical industry as a quality control reference material. It also finds applications in the polymer industry for testing analytical methods, in the sensor industry for calibration purposes, and in semiconductor manufacturing for quality assurance of materials.

When handling Ascorbic Acid Impurity 9 (CAS: 490-83-5), it is important to wear appropriate personal protective equipment (PPE) such as gloves and safety goggles. Work should be conducted in a fume hood to minimize inhalation risks. Spills should be cleaned up carefully using appropriate absorbents, and the material should be disposed of according to local regulations. Always refer to the Safety Data Sheet (SDS) for detailed guidance.