METHOCEL™ 228S is a modified HPMC used as a thickener, water retention aid, and lubricating agent in plasters, mortars, tile adhesives, tape–joint compounds, crack fillers, and other construction materials.
METHOCEL™ 228S is a surface-treated hydroxypropyl methylcellulose (HPMC) thickener. It is a water-soluble, high-purity, nonionic cellulose ether that yields a viscosity of 5,000 cPs at 2% in water. METHOCEL™ 228S is surface treated to delay hydration. This delayed hydration allows for lump-free solutions of METHOCEL™ 228S to easily form in aqueous formulations. When used in tape–joint compounds and crack fillers, METHOCEL™ 228S imparts excellent workability, crack resistance, and viscosity control. METHOCEL™ 228S also enhances water retention, extending the open time of the formulation.
In gypsum and cement plasters and masonry mortars and grouts, the water-retaining performance of METHOCEL™ 228S provides better mechanical strength through slower evaporation and loss of moisture when in contact with other porous materials. The water retention that METHOCEL™ 228S provides also improves the visual appearance and strength of these materials by reducing cracking issues.
Appearance: White to slightly off-white powder
Ubbelohde viscosity (2% in water at 20°C, mPa·s): 5,000
Moisture content (%): Less than 5.0
Particle sizes less than 212 µm (%): Greater than 97
Primary Chemistry: Hydroxypropyl methylcellulose
Delayed solubility
Water soluble
Highly water retentive
No ionic charge
pH stable
Reversible thermal gelation
Sag and creep of joint compounds and crack sealants
Cracking and loss of moisture in tile adhesives, grouts, mortars, and plasters
Difficulty creating solutions with other non-surface-treated grades of METHOCEL™
Tape–joint compounds
Crack sealants
Tile adhesives
Cement and gypsum plasters
Grouts
Mortars
Learn more about METHOCEL™ 228S and its applications and functionality on our dedicated website for cellulosics here.
Your document download will begin shortly.
ChemPoint will not under any circumstances release personal user information to individuals or companies. All information collection is solely used to support ChemPoint customers service communications. Read our Privacy Notice.
Thank you for your inquiry and interest in ChemPoint.
We will respond to you shortly.
ChemPoint will not under any circumstances release personal user information to individuals or companies. All information collection is solely used to support ChemPoint customers service communications. Read our Privacy Notice.
Thank you for your inquiry and interest in ChemPoint.
We will respond to you shortly.
ChemPoint will not under any circumstances release personal user information to individuals or companies. All information collection is solely used to support ChemPoint customers service communications. Read our Privacy Notice.
The document currently is provided in the following languages from the supplier at this time.
The document currently is provided in the following languages from the supplier at this time.
We’ve detected that you are located in a different region than the region selected on the website. Would you like to change your region?
Current Region: English - United States
.png)
Hi, let us know if you have any questions as you visit our website.
