NJ-212 Hydrophobic Agent Series is an inorganic salt-modified organosilane powder designed to enhance the water resistance and impermeability of cement-based materials. Key features include:
Preventing liquid water infiltration through surface capillary action into cured cementitious materials, significantly reducing water absorption rates while protecting material surfaces from moisture penetration;
The product’s impermeability performance correlates with its dosage, showing minimal adverse effects on compressive strength within recommended ranges.
This formulation is suitable for alkaline environments.
scope of application
waterproof mortar, joint filler, gypsum board, plastering gypsum, decorative mortar, water-resistant putty, tile adhesive, anti-seep waterproof cement-based mortar
performance index
Homogeneity index | NJ-212 |
apparent | White powder |
Density, (g/L) | 300~450 |
pH value (1% aqueous solution) | 7.0~9.0 |
Fineness (200 mesh sieve residue),% | ≤3.0 |
Water absorption after 2h,% | 1.29 |
Water absorption after 24h,% | 1.80 |
Recommended dosage
The recommended dosage of this product in various systems is 1~5‰ of the system. If the surface hydrophobic state is required to be high, the dosage can be increased, and the best dosage should be determined after test.
Packaging and storage
This product is packaged in paper bags, 20kg/bag;
this product is not easy to be too high in storage temperature, it is recommended that the storage environment temperature is 10~25℃;
store sealed to prevent moisture and pressure, the storage time should not exceed 6 months.
technical support
- The company’s technical personnel provide consulting services in the preparation process of various formula systems;
- Technology tracking, in conjunction with the long-term optimization of the formulation system.
Recommended dosage
The recommended dosage of this product in various systems is 1~5‰ of the system. If the surface hydrophobic state is required to be high, the dosage can be increased, and the best dosage should be determined after test.