RememberRegistered Now



Potassium Methyl Siliconate RJ-WP01

※MSDS Download ※TDS Download Inquiry


Chemical name: Potassium Methyl Siliconate; Methylsilanetriol potassiumsalt; Potassium methylsilanetriolate

CAS No: 31795-24-1

Molecular Formula: CH3K3O3Si

Potassium Methyl Siliconate RJ-WP01 is clear water-dilutable potassium methyl siliconate solution. Designed to impart water repellency to a wide variety of substances, such as concrete/cement, sandstone, limestone, marble, granite and bricks, ceramics, gypsum and gypsum-based plasterboard, light fillers etc.The siliconate reacts with carbon dioxide (CO2) in the air to form an insoluble water-resistant treatment within 24 hours.RJ-WP01 is also particularly effective in preventing humidity from rising within walls(rising damp). For this application the product is injected into the walls.

Due to the competitive price, Potassium Methyl Siliconate RJ-WP01 is widely used in some large scale construction projects by our clients from all over the world, we supply 300MT Potassium Methyl Siliconate RJ-WP01 per month. 

Fig.1 RJ-WP01 waterproofing test on concrete

Fig.2 RJ-WP01 waterproofing test on cement substrate experiment

Fig.3 RJ-WP01dipping pottery clay experiment

For use method details, please contact, RUIchem will provide technical support. 

Technical Index




 Clear solution

 Solid Content






 Active content

 Approx 28%

 K20 equivelent


Usage Application

v For the surface treatment of building materials (porous building materials such as bricks) to impart water repellency.  

v Tiles waterproofing to reduce its water absorption. 

v Concrete waterproofing, improve its resistance to freeze-thaw andefflorescence

v Perlite waterproofing, reducing its water absorption. 


1. Clean up the dust and oil on the substrate surface.

2. Dilute the RJ-WP01 with water to form the dilution. (dilute ratio: 1kg RJ-WP01/20kg water)

3. Brush, roll or spray the dilution well on the substrate surface.

4. Brush or spray the surface with the dilution for second time after 1 hour.

5. Protect the surface for 24 hours.(Avoid water)

(Operation temperature must be above 8 ℃)


Potassium methylsilanetriolate RJ-WP01 is available in 200L or 1000L drums or according to customer request.


Sealed storage under 5-30 ℃ temperature. Avoid high temperature and freezing conditions.

Shelf life

Shelf life: 12 months.

Click here to view more silicone water repellents we are supplying.