Knowde Enhanced TDS
Identification & Functionality
- INCI Name
- Cosmetic Ingredients Functions
- Technologies
Features & Benefits
Applications & Uses
- Markets
- Bath & Shower Applications
- Skin Care Applications
Properties
- Odor
- Odorless
- Appearance
- White powder
- Physico-Chemical Properties
- Note
1) based on original substance
2) based on ignited substance (2 h / 1000°C)
3) According to COLIPA - Guidelines on Microbial Quality
Management (MQM, Chapter 7.2.1 - Quantitative Specification, the above listed limit shall be interpreted as follows: 10* --> the maximum limit of acceptance is 5 x 10)
*) The given data are typical values. Specifications on request.
| Value | Units | Test Method / Conditions | |
| Yeasts and moulds³ | pass | cfu/g | acc to Ph. sur |
| Total Plate Count³ | max. 100 | cfu/g | acc to Ph. sur |
| Sulfate Content¹ | max. 300 | % | ISO 15350 |
| Iron Content¹ | max. 1.5 | ppm | Internal Method |
| Sodium Content¹ | max. 400 | % | Internal Method |
| SiO₂ Content³ | max. 1.0 | % | ISO 3262-19 |
| Standard Value (γ) | min. 97 | — | DIN 33763 |
| Tamped Density (Not Sieved) | 250 | g/l | ISO 787-11 |
| Sieve Residue (250µm, Alpine) | 75 | % | ISO 8130-1 |
| pH Value (5% in water) | 6 | — | ISO 787-9 |
| Loss on Drying (2h at 105°C) | max. 7.0 | % | ISO 787-2 |
| Particle Size (d50 Laser Diffraction) | 320 | µm | ISO 13320-1 |
| DOA Absorotion | 225 | ml/100g | ISO 19246 |
| Specific Surface Area (N₂) | 190 | m²/g | Multipoint ISO 9277 |
Regulatory & Compliance
- Certifications & Compliance
Technical Details & Test Data
- Processing of SIPERNAT® PC
Figure 1: Microscope pictures of SIPERNAT PC Hydrated Silica particles
SIPERNAT® 250 PC and SIPERNAT® 9000 PC are composed of exceptionally sturdy round-edged Hydrated Silica particles and are therefore the preferred choice for formulations with a long lasting scrubbing effect. The large SIPERNAT 9000 PC particles are selected for strong desquamation or for the function of a sensory indicator when combined with smaller particles for the cleaning. SIPERNAT® 22 PC and SIPERNAT® 2200 PC both feature spherical and softer particles, providing for a gentle cleaning. With its small and soft particles, SIPERNAT 22 PC is specially recommended for its efficient but gentle desquamation. SIPERNAT® 2200 PC with the bigger particles leads to a more pronounced particle sensation in the formulations. As its particles disintegrate while rubbing on skin the product is a preferred choice when gentle cleansing is desired, e.g. for sensitive formulations.
Processing of SIPERNAT® PC
Hydrated Silica- Incorporate SIPERNAT® PC Hydrated Silica at low to moderate shear to prevent the destruction of the particle at any time during processing.
- Typical use concentration is 5 to 10 w.-%. Please note that for the same number of particles higher concentrations of SIPERNAT® PC products with bigger particle size are needed.
Figure 2: Durability of SIPERNAT PC particles dispersed in an aqueos scrub formulation on rubbing to the skin
Storage & Handling
- Shelf Life
- 24 months
- Storage Conditions
Our silica products are inert and extremely stable chemically. However, due to their high specific surface area, they can absorb moisture and volatile organic compounds from the surrounding atmosphere. Therefore, we recommend storing the products in sealed containers in a dry, cool place, and removed from volatile organic substances. Even if a product is stored under these conditions, after a longer period it can still pick up ambient moisture over time, which could lead to its exceeding the specified moisture content. For this reason, our recommended use-by date is 24 months after date of manufacture. Product more than 24 months old should be tested for moisture content before use in order to make certain that it is still suitable for the intended application.