Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Industrial Additives Functions
- Technologies
Features & Benefits
- Labeling Claims
Applications & Uses
- Markets
- Industrial Additives End Use
- Use Level
- 0.2-0.4%
- Applications
Gypsum Wallboards and Gypsum Fiberboards
- Application Details
- Water-repellent treatment of plaster elements and plasterboard / wallboard.
- SILRES® BS 94 is added to the mixing / gaging water of the plaster. The addition of just 0.2-0.4% SILRES® BS 94, expressed in terms of the plaster, effects a marked reduction in water absorbency as required by DIN EN 520.
- The efficiency of SILRES® BS 94 depends on the kind of plaster, on the water / gypsum ratio and on additives such as starch / cellulose or surfactants. This is why no general recommendations on the dosage of SILRES® BS 94 can be given.
- Preliminary tests are always necessary for establishing the required amount.
- Alkaline components of the plaster may lead to diminution of the bulk density and the water repellency of the plaster elements.
- SILRES® BS 94 is not recommended for surface treatment of plaster elements.
- Suggested formulation for laboratory tests: 1.25g of SILRES® BS 94 is mixed into 400g of deionized water with a turbine mixer (at least 1,000rpm) for 30 seconds. 500g of plaster of paris is added to this mixture. The mixture stirred with a paddle mixer for one minute and then poured into PVC rings (diameter: 8cm, height: 2cm). After setting, the samples are removed from the PVC rings and dried for 24 hours at 40°C in an exhaust hot-air cabinet with open flap. Subsequently the samples are dried for six days of room temperature during that time they will reach their constant weight.
- To determine water absorbency, the samples are placed horizontally into deionized water so that they are covered by 5cm of water (DIN EN 520). After 2 hours they are taken out, the remaining drops on the surface are removed and the samples are weighed. The mean water absorbency of at least 3 samples is calculated terms of the dry weight of the plaster samples before immersion in water. Untreated samples produced by the same method have a water absorbency of about 50%.
Properties
- Physical Form
- Appearance
- Colorless liquid
- Odor
- Not characteristic
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Active Substance | 100 | wt % | — |
| Density (at 25°C, 1013 hPa) | 1 | g/cm³ | DIN 51757 |
| Flash Point | min. 110 | °C | ISO 3679 |
| Flash Point | 115 | °C | ISO 2719 |
| Ignition Temperature | 285 | °C | DIN 51794 |
| Kinematic Viscosity (at 25°C) | 20 - 25 | mm²/s | DIN 51562 |
| Refractive Index | approx. 1.396 | — | — |
| Volatile Content | max. 1.5 | wt % | — |
Regulatory & Compliance
- Certifications & Compliance
- Quality Standards
Packaging & Availability
- Country Availability
- Regional Availability
Storage & Handling
- Storage Information
SILRES® BS 94 must be stored in the tightly closed original container under exclusion of moisture.