Introduction to Hydroxypropyl Methyl Cellulose HPMC Maintaining Water in Lime Plaster CAS 9004 65 3

Hydroxypropyl Methylcellulose (HPMC), whose Chinese name is hydroxypropyl methylcellulose, is a semi-synthetic, non-ionic cellulose ether obtained by chemically modifying natural cellulose. This white powder can form a transparent viscous solution after dissolving in water. It has excellent thickening, water retention, stability and film-forming properties. It is an indispensable multifunctional additive in many fields such as construction.

Characteristics and advantages of Hydroxypropyl Methyl Cellulose HPMC Maintaining Water in Lime Plaster CAS 9004 65 3

Excellent water solubility: It can be quickly dissolved in cold water to form a clear and stable solution.

Efficient thickening and water retention ability: Increase the viscosity of the material, effectively reduce water evaporation, and improve work efficiency.

Good stability: It has good stability to acids, alkalis, and salts, and is suitable for a wide range of pH values.

Film-forming and protective effects: After drying, it forms a tough and transparent film to protect the substrate and prevent water penetration and evaporation.

Non-toxic and non-irritating: It has good biocompatibility and is suitable for the fields of medicine and food.

Adjustability: By changing the degree of substitution and molecular weight, its performance can be adjusted to meet different application requirements.

Specifications of Hydroxypropyl Methyl Cellulose HPMC Maintaining Water in Lime Plaster CAS 9004 65 3

Hydroxypropyl Methyl Cellulose (HPMC) for Lime Plaster– Water Retention Grade

Product Summary

This Hydroxypropyl Methyl Cellulose (HPMC) is specifically made to enhance water retention in lime-based plasters. It aids maintain moisture in the mix much longer, which provides the plaster more time to establish appropriately. Great water retention suggests better workability, stronger bond, and fewer cracks.

CAS Number: 9004-65-3
Look: White to beige free-flowing powder
Purity: ≥ 99%.
Wetness Web content: ≤ 5%.
pH (2% remedy): 6.0– 8.0.
Thickness (2% solution at 20 ° C): 4,000– 100,000 mPa · s (varies by quality).
Hydroxypropyl Material: 4– 12%.
Methoxyl Content: 19– 30%.
Gel Temperature level: 58– 75 ° C.

Key Features

This HPMC dissolves easily in chilly water. It does not create lumps when mixed appropriately. The item stays stable over a wide variety of temperature levels. It functions well with other usual ingredients used in lime plaster formulas.

The high water retention capability slows down water loss throughout drying. This is important because lime plaster requires wetness to carbonate totally. Without enough water, the plaster may compromise or break.

HPMC additionally enhances the appearance of the mix. It makes the plaster smoother and less complicated to spread out. Employees can use it with less initiative, and the finish looks extra also.

Handling and Storage space

Shop the powder in a trendy, dry location. Keep it away from wetness and direct sunlight. Use clean, completely dry devices when handling the item. Once opened up, secure the bag tightly to stop clumping.

This HPMC fulfills conventional top quality needs for construction-grade cellulose ethers. It is non-toxic and risk-free for use in structure products when managed as directed.

Applications of Hydroxypropyl Methyl Cellulose HPMC Maintaining Water in Lime Plaster CAS 9004 65 3

Applications of Hydroxypropyl Methyl Cellulose (HPMC) in Lime Plaster

Why Water Retention Issues

Lime plaster requires adequate water to treat appropriately. Without it, the plaster dries out as well fast. This brings about weak points, cracks, and bad adhesion. Hydroxypropyl Methyl Cellulose (HPMC), with CAS number 9004-65-3, solves this issue by holding water in the mix.

Just How HPMC Works

HPMC is a white powder made from natural cellulose. When blended right into lime plaster, it forms a thin film around fragments. This movie slows down water loss. The plaster stays damp longer, providing lime time to react totally with co2 airborne. That response is essential to toughness and toughness.

Key Benefits in Practice

Building contractors use HPMC since it makes work much easier. The plaster stays smooth and spreadable for more time. It additionally sticks much better to walls, even on completely dry or porous surfaces. Much less water loss means less fractures after drying out. This reduces repair work and remodel.

HPMC also boosts the texture of the mix. It decreases sagging on upright surfaces. That assists employees apply also coats without slumping or gliding. The final finish looks cleaner and more consistent.

Trustworthy Efficiency Throughout Conditions

HPMC functions well in different climate. In warm or windy conditions, water vaporizes quickly. HPMC counters that effect. In winter, it still sustains constant healing. This uniformity provides specialists confidence regardless of the period.

The correct amount of HPMC depends upon the plaster formula and work website requirements. Too little will not help sufficient. Too much can make the mix sticky or slow to set. A lot of producers recommend 0.2% to 0.5% by weight of complete dry active ingredients.

Making use of high-purity HPMC with CAS 9004-65-3 makes certain stable outcomes. It mixes easily, liquifies fully, and does not influence the shade or breathability of lime plaster– essential traits for historic restoration and environmentally friendly builds.

Company Profile

We are the global leader in lightweight concrete and advanced engineered foam solutions. Known globally for its commitment to research, innovation, and applied expertise, we have been providing engineered foam solutions since the early 2012’s.

We can supply high-quality concrete admixture and foam concrete related products all over the world.

The company has a professional technical department and quality supervision department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.

If you are interested, please feel free and contact us.

Payment

T/T, Western Union, Paypal, Credit Card etc.

Shipment

By air, by sea, by express, as customers request.

5 FAQs of Hydroxypropyl Methyl Cellulose HPMC Maintaining Water in Lime Plaster CAS 9004 65 3

Frequently Asked Questions About HPMC in Lime Plaster

What is HPMC and why is it used in lime plaster?

HPMC stands for Hydroxypropyl Methyl Cellulose. It is a white powder made from natural cellulose. Builders add it to lime plaster to help the mix hold water longer. This gives workers more time to apply and smooth the plaster before it starts to dry.

How does HPMC improve water retention?

HPMC forms a thin film in the wet plaster. This film slows down how fast water leaves the mix. Good water retention means the lime can fully react with carbon dioxide in the air. That reaction is needed for the plaster to harden properly and become strong.

Will HPMC affect the final look or feel of the plaster?

No. When used in the right amount, HPMC does not change the color, texture, or breathability of lime plaster. It works behind the scenes during application and curing. After the plaster dries, you cannot tell HPMC was ever added.

How much HPMC should be added to lime plaster?

The typical dose is between 0.2% and 0.5% of the total dry weight of the mix. The exact amount depends on the type of lime, sand, and working conditions. Too little may not help enough. Too much can make the mix sticky or slow drying. Always follow the product instructions or test small batches first.

Is HPMC safe to use in historic or eco-friendly buildings?

Yes. HPMC is non-toxic, biodegradable, and compatible with traditional lime systems. It does not harm old masonry and supports vapor permeability—important for heritage and sustainable builds. Many conservation projects use HPMC-modified lime plasters without issues.