Silicones & Silicates
REACH
Sodium methyl siliconate
CAS Number
16589-43-8
EC Number
240-648-3
What is Sodium methyl siliconate?
Sodium methyl siliconate (CAS 16589-43-8), also known as KZh 11, HSL 11, and GKZh 11, is an organosilicon compound used industrially to impart durable water-repellent properties.
Where is Sodium methyl siliconate used?
- Construction: surface modifier and corrosion inhibitor on concrete, brick, and masonry, reducing water absorption and slowing corrosion of embedded reinforcement
- Textile and leather: moisture resistance without altering hand feel
- Paper manufacturing: modifies surface energy to control water penetration and improve dimensional stability
- Water treatment and industrial maintenance: corrosion inhibitor in metal-contact systems
- Its siliconate film formation provides protective barrier properties for pipework.
Commercial specifications
- Active content 30–50%
- Bulk supply in drums and IBCs
Other Names (Synonyms)
KZh 11|HSL 11|GKZh 11|Dryseal C|DC 772|722 Water repellent|Sodium methylsilanetriolate|RefChem:887695
What are the physical properties of Sodium methyl siliconate?
Density 1.240 g/cm³
Color Colourless
Form Oil
How is Sodium methyl siliconate classified and handled safely? Learn More
Danger
GHS05· Corrosive
Hazard Statements
H314 Causes severe skin burns and eye damage
H318 Causes serious eye damage
Precautionary Statements
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P316 Get emergency medical help immediately.