HPMC (ไฮดรอกซีโพรพิล เมทิล เซลลูโลส)

What is Hydroxypropyl Methyl Cellulose (HPMC) Used For? 

Hydroxypropyl methyl cellulose (HPMC) is a multifunctional cellulose ether widely used in construction, pharmaceuticals, food, and personal care industries. In construction materials, it acts as a thickener, water retention agent, and workability enhancer in cement-based mortars, tile adhesives, gypsum plasters, and self-leveling compounds. HPMC improves adhesion, reduces cracking, and ensures smooth application in renders and exterior insulation systems.

In pharmaceuticals, HPMC serves as a binder, film-coating agent, and controlled-release matrix in tablets and capsules. It is also used in food products as an emulsifier, stabilizer, and thickener in sauces, dairy products, and gluten-free baking. Additionally, HPMC is found in cosmetics and personal care products, such as shampoos, lotions, and toothpaste, where it functions as a viscosity modifier and film-forming agent.

Is Hydroxypropyl Methylcellulose (HPMC) Safe? 

Yes, HPMC is considered safe for various applications when used as directed. It is non-toxic, biodegradable, and non-irritating to the skin and eyes. In food and pharmaceuticals, HPMC is approved by regulatory agencies like the FDA (U.S.), EFSA (Europe), and WHO as a generally recognized as safe (GRAS) additive.

Since HPMC is derived from plant cellulose and does not contain harmful chemicals, it is widely used in vegan and vegetarian products as an alternative to animal-based gelatin. However, excessive inhalation of HPMC powder in industrial settings should be avoided, as it may cause mild respiratory irritation. Proper handling with protective equipment ensures safe usage in construction and manufacturing processes.

HPMC Asked Questions​ 

What are the primary application areas of HPMC in the construction industry?
HPMC is widely used in tile adhesives, putty powder, cement-based mortar, gypsum-based mortar, self-leveling compounds, and exterior insulation mortar. It primarily functions as a thickener, water retention agent, and workability improver.

How to Select Suitable HPMC Grade?
Choose appropriate HPMC products based on viscosity, solubility and water retention capacity according to specific application requirements. Different construction needs correspond to different HPMC specifications.

What are the usage methods and precautions for HPMC?
Slowly add HPMC into water while stirring to avoid lump formation. Complete dissolution before mixing with other materials ensures optimal performance.

Can HPMC Be Mixed with Other Additives?
Yes, HPMC can be combined with various additives like redispersible polymer powder, other cellulose ethers and defoamers. The specific combination depends on formulation requirements.

What are the storage conditions for HPMC?
Store in cool, dry place away from direct sunlight and high temperature. Keep packages sealed to prevent moisture absorption and caking.