Crystal Quartz
Optical Material Information*
| Chemical Formula | SiO2 |
| Refractive Index (at 0.99 microns) | 1.54 |
| Knoop Hardness (psi) | 741 |
| Modulus of rupture (psi) | 1500 |
| Useful Wavelength Range, Transmission (microns) | 0.2-2.4 |
| Useful Wavelength Range, ATR (microns) | 0.2-2.0 |
| Maximum Useful Temperature (ºC) | 1100 |
| Melting Point (ºC) | <1470 |
| General properties | Cracks easily when heated; colorless. |
| Chemical Properties | Soluble in HF; insoluble in water; very slightly soluble in alkali. |
| Clean with… | Alcohol, acetone, water. |
*This was compiled from various sources. For more details, consult the Chemical Abstracts Service at www.cas.org.
Transmission Spectrum of Grade 1 Material
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