| Scientific Name |
POTASSIUM SILICATE |
| Trivial Name |
WATER GLASS |
| Chemical Formula |
K2SiO3 |
| Molecular Weight |
154.28 |
| CAS |
1312-76-1 |
| Packing |
300KG/BARREL (iron/plastic barrel) |
As the binder of welding powder for making welding electrode, potassium silicate is a colorless or slightly yellowish translucent to transparent glassy liquid substance, which is hygroscopic and has strong alkaline reaction. It decomposes in acid to precipitate silica.
Potassium silicate is commonly used in the manufacture of welding rods, electrodes for welding, vat dyes, and fire retardants. In the stable state, it is a non-toxic, odorless, transparent, viscous liquid. It is soluble in water and acid, but insoluble in alcohol.
📋 Numbering System
CAS Number1312-76-1
MDL NumberMFCD00145152
EINECS Number215-199-1
🧪 Physical Data
Appearance: Viscous liquid
Solubility: Soluble in water, colloidal silicic acid is released after dissolving in acid. Its solubility is much higher than that of sodium silicate. Insoluble in alcohol.
🛡️ Properties and Stability
Does not decompose if used and stored in accordance with specifications; there are no known hazardous reactions. In case of fire, water and various fire extinguishers can be used to put out the fire.
📦 Storage & Application
Storage Condition
Stored in general warehouses or in specialized tanks.
Main Application
Used in the manufacture of welding rods, electrodes for welding, vat dyes, and fire retardants.
Frequently Asked Questions
What is the primary role of potassium silicate in welding?
Potassium silicate acts as a crucial binder for welding powder during the manufacture of welding electrodes and rods, providing structural integrity and performance.
Is potassium silicate soluble in organic solvents?
No, potassium silicate is insoluble in alcohol. However, it is highly soluble in water and acid.
What are the storage requirements for this substance?
It should be stored in standard general warehouses or in industrial tanks according to standard safety specifications.
What is the appearance of potassium silicate?
It is a viscous liquid that is typically colorless or slightly yellowish and ranges from translucent to transparent.
Are there any hazardous reactions associated with it?
In its stable state and when handled according to specifications, there are no known hazardous reactions, and it is considered non-toxic and odorless.
What happens when potassium silicate is dissolved in acid?
When dissolved in acid, it decomposes to precipitate silica and releases colloidal silicic acid.
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