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hydroxypropyl methyl cellulose cas number

Hydroxypropyl Methyl Cellulose An Overview

Hydroxypropyl Methyl Cellulose (HPMC) is a versatile and widely used cellulose derivative that has gained significant attention across various industries, including food, pharmaceuticals, cosmetics, and construction. With the Chemical Abstracts Service (CAS) number 9004-65-3, HPMC is recognized for its unique properties and applications, making it a valuable ingredient in many formulations.

Structure and Properties

HPMC is synthesized from natural cellulose through a series of controlled chemical reactions involving propylene oxide and methyl chloride. This modification process enhances its solubility and functionality, resulting in a product that is compatible with both water and organic solvents. The chemical structure of HPMC consists of hydroxyl (-OH) groups, which contribute to its hydrophilicity and ability to form gels. The ratio of hydroxypropyl to methyl groups can be adjusted, allowing for the customization of its properties for specific applications.

One of the most notable characteristics of HPMC is its ability to form a viscous solution when dispersed in water. This property makes it an excellent thickening agent and stabilizer. Moreover, HPMC exhibits excellent film-forming abilities, which are beneficial in coatings and adhesives. The non-ionic nature of HPMC also makes it less likely to interact with electrolytes, allowing it to maintain viscosity even in saline solutions.

Applications in Various Industries

1. Pharmaceutical Industry

In the pharmaceutical sector, HPMC is extensively used as a binding agent, formulation aid, and controlled-release agent in tablet manufacturing. Its ability to form gels and regulate the release of active pharmaceutical ingredients (APIs) makes it an ideal candidate for sustained-release formulations. HPMC is also employed in ophthalmic solutions due to its biocompatibility and moisture-retaining properties, providing an effective lubricant for dry eyes.

hydroxypropyl methyl cellulose cas number

2. Food Industry

HPMC is recognized as a food additive and is often used in various food products as a thickener, emulsifier, and stabilizer. It is common in gluten-free formulations, helping to improve texture and moisture retention. Additionally, HPMC is utilized in the production of low-fat products, where it can enhance mouthfeel and overall quality without adding significant calories.

3. Cosmetic and Personal Care Products

In cosmetics and personal care formulations, HPMC acts as a thickening agent, providing desirable viscosity and stability to products such as lotions, creams, and gels. Its film-forming properties contribute to the longevity of makeup products, while its moisture-retaining ability helps to enhance skin hydration.

4. Construction Industry

HPMC plays a critical role in the construction industry, particularly in the formulation of cementitious materials such as tile adhesives and joint compounds. Its water retention properties ensure proper hydration of cement, improving workability and adhesion while reducing cracking. The use of HPMC in construction materials enhances their performance and durability.

Conclusion

Hydroxypropyl Methyl Cellulose (HPMC) is an impressive multifunctional ingredient with a wide array of applications across various industries. Its unique properties of solubility, viscosity, and film-forming capabilities make it an essential component in pharmaceuticals, food products, cosmetics, and construction materials. As industries continue to seek innovative solutions and formulations, HPMC stands out as a valuable ingredient that contributes to improved product performance and quality. With ongoing research and development, the potential applications and benefits of HPMC are likely to expand, reinforcing its significance in modern formulations.

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