Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Chemical Name
- Industrial Additives Functions
- Plastics & Elastomers Functions
- Technologies
Features & Benefits
- Industrial Additives Features
- Materials Features
Applications & Uses
- Applications
- Compatible Polymers & Resins
- Industrial Additives End Use
- Plastics & Elastomers End Uses
- Applications
Electrics & Electronics.
- Application Details
- HDK® N20P is used as a reinforcing filler in elastomers, mainly silicone-elastomers.
- HDK® N20P is used as a thixotropic agent in the production of tooth pastes and sulfuric acid gel batteries.
- HDK® N20P is not suitable for pharmaceuticals, food and feed. A good dispersion of HDK® N20P is a must to assure optimum performance.
Properties
- Color
- Appearance
- White colloidal powder
- Typical Properties
- Specifications
- Properties
White colloidal powder of high purity.
| Value | Units | Test Method / Conditions | |
| Density (at 20°C, SiO₂) | approx. 2.2 | g/cm³ | DIN 51757 |
| Loss of Weight (at 1000°C, 2hours (based on the substance dried at 105 °C for 2 hours)) | max. 2 | % | DIN EN ISO 3262-19 |
| Refraction Index | 1.46 | — | — |
| Silanol Group Density | 2 | SiOH/nm² | — |
| SiO₂ Content (based on the substance heated at 1000°C for 2 hours) | min. 99.8 | % | DIN EN ISO 3262-19 |
| Value | Units | Test Method / Conditions | |
| BET Surface | 175 - 225 | m²/g | DIN ISO 9277 DIN 66132 |
| Loss on Drying (at 105°C, 2 hours) | max. 1.5 | % | DIN EN ISO 787-2 |
| pH (in 4% aqueous dispersion) | 3.8 - 4.3 | — | DIN EN ISO 787-9 |
| Sieve Residue (min. 40 µm) | max. 0.03 | % | DIN EN ISO 787-18, Mocker Apparatus |
| Tamped Density | approx. 100 | g/l | DIN EN ISO 787-11 |
Regulatory & Compliance
- Certifications & Compliance
Safety & Health
- Safety Notes
During transportation and processing HDK® N20P may cause electrostatic charges. Like other amorphous silicas HDK® N20P does not show either carcinogenic (IARC classification, Volume 68, 1997) or mutagenic properties.
Packaging & Availability
- Country Availability
- Packaging Type
- Regional Availability
- Packaging Information
Pallet with paper bags: 20 kg bags.
Storage & Handling
- Storage Information
HDK® N20P should be stored in the original packaging in dry storage areas. Due to the high surface area HDK® adsorbs volatiles and should be protected from humidity and volatiles. If single bags are taken away from an original pallet, the remaining bags of this pallet must again be protected against humidity and volatiles.