Zinc Sulfide (Cleartran, Irtran-2)
Optical Material Information*
| Chemical Formula | ZnS |
| Refractive Index (at 1.00microns) | 2.27 |
| Knoop Hardness (psi) | 355 |
| Modulus of Rupture (psi) | 10,000 |
| Useful Wavelength Range, Transmission (microns) | 0.45-14.0 |
| Useful Wavelength Range, ATR (microns) | 0.7-10 |
| Maximum Useful Temperature (ºC) | 300 |
| Melting Point (ºC) | >800 |
| General properties | Slightly harder and more chemically resistant than ZnSe; good resistance to thermal and mechanical shock; withstands reasonable abrasion; clear. |
| Chemical Properties | Soluble in some acids; insoluble in water and normal bases; reacts to strong oxidizing agents; slightly soluble in nitric acid and sulfuric acid. |
| Clean with... | Acetone; alcohol; water. |
*This was compiled from various sources. For more details, consult the Chemical Abstracts Service at www.cas.org.
Transmission Spectrum
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