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Potassium Methylsiliconate Solution

Updated: 2026-07-17

Overview

Potassium methylsiliconate solution is a versatile chemical widely used in construction and material science for its waterproofing and surface treatment properties. It is an alkaline solution that reacts with carbon dioxide in the air to form a water-repellent film on porous materials like concrete and masonry. This compound is favored for its durability and ease of application, making it a popular choice for both industrial and commercial waterproofing projects. Its chemical stability and effectiveness in harsh environments contribute to its widespread adoption in the construction industry.

Physical and Chemical Properties

混凝土用 纯度高质量好 甲基硅酸钾溶液 含量50%山东澳凯化工有限公司

Potassium methylsiliconate solution is typically a colorless to light yellow liquid with a density of approximately 1.2 g/cm³. It is highly soluble in water, forming a stable alkaline solution. The compound reacts with atmospheric CO2 to produce a hydrophobic layer on treated surfaces. The solution is alkaline, with a pH typically ranging from 11 to 13, which necessitates careful handling to avoid corrosion and skin irritation. Its key chemical property is the ability to penetrate porous substrates and form a durable, water-repellent barrier upon curing.

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Main Applications

The primary use of potassium methylsiliconate solution is as a waterproofing agent for concrete, masonry, and other porous construction materials. It is applied to surfaces to prevent water infiltration, reducing damage from freeze-thaw cycles and prolonging the lifespan of structures. Additionally, it serves as a surface treatment for facades, roofs, and decorative stone elements. In industrial settings, it is used to protect infrastructure like bridges and tunnels. The solution is also employed in some coatings and paints to enhance water resistance.

Safety and Storage

工业级 40% 甲基硅酸钾溶液 有机硅防水剂 高效渗透型 CAS 13130-09-9济南优科化工有限公司

Due to its alkaline nature, potassium methylsiliconate solution requires careful handling. Protective equipment such as gloves, goggles, and protective clothing should be worn to prevent skin and eye contact. In case of exposure, rinse immediately with water. The solution should be stored in a cool, dry place, away from direct sunlight and incompatible materials like acids. Containers must be tightly sealed to prevent evaporation and contamination. Proper ventilation is recommended in storage and handling areas to avoid inhalation of fumes.

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B2B Procurement Guide

When procuring potassium methylsiliconate solution, buyers should prioritize suppliers with a proven track record in chemical distribution. Key factors to consider include concentration, purity, and compatibility with the intended application. Bulk purchases often result in cost savings, but storage capacity and shelf life should be evaluated. It's advisable to request samples for testing before large-scale procurement. Ensure the supplier provides proper documentation, including safety data sheets (SDS) and certificates of analysis.

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