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4. Flooring Adhesives In the realm of flooring, REP is often added to adhesives, enhancing their performance by providing enhanced bond strength and flexibility. This is particularly crucial in dynamic environments where floors must withstand movement and stress.

6. Adjust Viscosity If the resulting solution is too thick, you can adjust the viscosity by adding more water. Conversely, if it is too thin, you can introduce more HEC, provided it is done gradually.

Moreover, HPMC is used in ophthalmic solutions and contact lens formulations due to its lubricating properties. It helps to maintain moisture and relieve dryness, thereby enhancing user comfort. The versatility of HPMC in pharmaceuticals illustrates its importance in advancing drug delivery technologies.

The safety of HPMC has been rigorously assessed in various studies. Regulatory bodies such as the U.S. Food and Drug Administration (FDA) and the European Food Safety Authority (EFSA) have classified HPMC as Generally Recognized As Safe (GRAS) when used as a food additive. This classification signifies that HPMC poses minimal risk to human health when utilized correctly.