Methoxypolyethylene glycols (CAS 9004 - 74 - 4) are a type of polymer compound. The chemical formula of methoxypolyethylene glycols can be generally represented as CH₃O(CH₂CH₂O)ₙH, where n represents the number of ethylene oxide repeating units, and different values of n result in products with different molecular weights.
Our Factory Supply Methoxypolyethylene Glycols are produced with high - quality raw materials and advanced manufacturing processes. They are available in a variety of molecular weights, typically ranging from 200 to 20,000. The product is a colorless to slightly yellow, viscous liquid or waxy solid at room temperature, depending on the molecular weight. It has good solubility in water, ethanol, and many organic solvents, and has excellent chemical stability and low toxicity.
1. Pharmaceutical industry: Methoxypolyethylene glycols are widely used in the pharmaceutical field. They can be used as a solubilizer to improve the solubility of poorly soluble drugs, thus enhancing the bioavailability of drugs. They can also be used as a coating material for tablets and capsules, providing controlled - release or enteric - coated functions.
2. Cosmetics industry: In cosmetics, methoxypolyethylene glycols are used as emollients, moisturizers, and thickeners. They can help keep the skin hydrated, reduce the feeling of dryness, and improve the texture and stability of cosmetic products.
3. Chemical industry: As a dispersant and emulsifier, it can be used in the synthesis of polymers, paints, and adhesives. It helps to disperse particles evenly in the system, improving the performance and quality of the final product.
When using methoxypolyethylene glycols, it is necessary to pay attention to the following points:
1. Dissolution: If the product is a solid, it can be heated gently to a suitable temperature (usually below 60°C) to make it melt and then mixed with other solvents or ingredients. When dissolving, stir slowly to ensure uniform dispersion.
2. Dosage: The dosage of methoxypolyethylene glycols should be determined according to the specific application and requirements. In pharmaceutical formulations, it is usually recommended to conduct pre - experiments to optimize the dosage. In cosmetics, the dosage is generally in the range of 1% - 10%.
3. Storage: Store the product in a cool, dry place, away from direct sunlight and heat sources. Make sure the container is tightly sealed to prevent moisture absorption and oxidation.
Case 1: Pharmaceutical Solubilization
A pharmaceutical company was developing a new anti - cancer drug with extremely low solubility in water. By using methoxypolyethylene glycols with a molecular weight of 4000 as a solubilizer, the solubility of the drug in the aqueous phase was increased by more than 10 times. After extensive pre - clinical and clinical trials, the drug showed improved bioavailability and better therapeutic effects.
Case 2: Cosmetic Moisturization
A well - known cosmetic brand introduced a new moisturizing cream. By adding 5% of methoxypolyethylene glycols with a molecular weight of 1000, the cream had better moisturizing performance. Consumers reported that their skin felt softer, smoother, and more hydrated after using the product. Market research showed that the sales of this product increased significantly compared to similar products without this ingredient.
Case 3: Polymer Synthesis
In a chemical research project on polymer synthesis, methoxypolyethylene glycols with a molecular weight of 2000 were used as a dispersant. The resulting polymer particles were more uniformly dispersed, and the mechanical properties of the final polymer product were improved. The product had better tensile strength and elongation at break, which was very suitable for industrial applications.
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