Pharmaceutical Grade Dimethyl Sulfoxide DMSO National Drug Standard Code API Preparation Solvent 500g per Bottle

Pharmaceutical Grade Dimethyl Sulfoxide (DMSO) CP Edition Pharmacopoeia Quality Standards

Dimethyl sulfoxide (DMSO) is an important solvent widely used in the pharmaceutical industry, valued for its high solubility, low toxicity, and unique pharmacological properties, making it extensively applied in various drug preparations and medical research. The "Chinese Pharmacopoeia 2020 Edition" (CP Edition) sets strict quality standards for pharmaceutical grade dimethyl sulfoxide to ensure it meets the requirements for medicinal and application purposes.

1. Properties of Dimethyl Sulfoxide

Dimethyl sulfoxide is a colorless transparent liquid with a slight characteristic odor. Its molecular formula is C?H?OS, and its molecular weight is 78.13. It exhibits high polarity, high permeability, and excellent dissolving capacity, capable of dissolving various organic compounds and inorganic salts.

2. Quality Standards

According to the "Chinese Pharmacopoeia 2020 Edition," pharmaceutical grade dimethyl sulfoxide must meet the following quality requirements:

- Appearance: Colorless transparent liquid, free from visible impurities.

- Identification: Characteristic functional groups identified through infrared spectroscopy or other chemical methods to confirm it is dimethyl sulfoxide.

- Assay: Dimethyl sulfoxide content must not be less than 99.5% (by mass) to ensure purity meets medicinal requirements.

- Impurity Limits:

- Water content: Must not exceed 0.2% to prevent moisture absorption affecting performance.

- Heavy metal content: Must not exceed 5ppm to ensure pharmaceutical safety.

- Acidity and alkalinity: pH value must be within the range of 6.0-8.0.

- Loss on drying: Must not exceed 0.5% to ensure stability.

- Optical density: Absorbance at specified wavelengths (275nm) must not exceed the limit to control organic impurities and oxidation products.

3. Medical Uses of Dimethyl Sulfoxide

As a pharmaceutical excipient, dimethyl sulfoxide is widely used in drug preparations, such as a penetration enhancer in topical medications, a solvent for injections, and an intermediate in drug synthesis. Additionally, it is commonly used as a dissolving agent, reaction medium, or stabilizer in medical experiments.

Pharmaceutical Grade Dimethyl Sulfoxide DMSO National Drug Standard Code API Preparation Solvent 500g per Bottle

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