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Chemicals that fit the given criteria include:
1. Quartz (SiO2):
- Density: 2.65 g/cm³
- Insoluble in water
- Particle size: Typically greater than 40 microns
2. Calcium carbonate (CaCO3):
- Density: 2.71 g/cm³
- Insoluble in water
- Particle size: Can vary depending on the source
3. Iron oxide (Fe2O3):
- Density: 5.24 g/cm³
- Insoluble in water
- Particle size: Typically greater than 40 microns
4. Aluminum oxide (Al2O3):
- Density: 3.98 g/cm³
- Insoluble in water
- Particle size: Typically greater than 40 microns