Zinc oxide
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| Names | |
|---|---|
| Ither names
Zinc white, calamine, filosofer's oo, Cheenese white, flouers o zinc | |
| Identifiers | |
3D model (JSmol) |
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| ChEBI | |
| ChEMBL | |
| ChemSpider | |
| EC Nummer | 215-222-5 |
PubChem CID |
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| RTECS nummer | ZH4810000 |
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| Properties | |
| ZnO | |
| Molar mass | 81.406 g/mol[1] |
| Appearance | White solit[1] |
| Odour | Odourless |
| Density | 5.1 g/cm3[1] |
| Meltin pynt | 1,974 °C (3,585 °F; 2,247 K) (decompones)[1][2] |
| Bylin pynt | 1,974 °C (3,585 °F; 2,247 K) (decompones) |
| 0.0004% (17.8°C)[3] | |
| Baund gap | 3.3 eV (direct) |
| Magnetic susceptibility | −27.2·10−6 cm3/mol[4] |
| Refractive index (nD) | n1=2.013, n2=2.029[5] |
| Structur[6] | |
| Wurtzite | |
| Space group | C6v4-P63mc |
a = 3.2495 Å, c = 5.2069 Å | |
Formula units (Z) |
2 |
| Tetrahedral | |
| Thermochemistry[7] | |
| Speceefic heat capacity, C | 40.3 J·K−1mol−1 |
| Staundart molar entropy S |
43.7±0.4 J·K−1mol−1 |
| Std enthalpy o formation ΔfH |
-350.5±0.3 kJ mol−1 |
Gibbs free energy (ΔfG˚) |
-320.5 kJ mol−1 |
| Pharmacology | |
| QA07XA91 (WHO) | |
| Hazards | |
| Safety data sheet | ICSC 0208 |
| EU clessification | Dangerous for the environment (N) |
| R-phrases | R50/53 |
| S-phrases | S60, S61 |
| NFPA 704 | |
| Flash pynt | 1,436 °C (2,617 °F; 1,709 K) |
| Lethal dose or concentration (LD, LC): | |
LD50 (Median dose) |
240 mg/kg (intraperitoneal, rat)[8] 7950 mg/kg (ratton, oral)[9] |
LC50 (Median concentration) |
2500 mg/m3 (moose)[9] |
LCLo (Lawest published) |
2500 mg/m3 (guinea pig, 3–4 h)[9] |
| US heal exposur leemits (NIOSH): | |
PEL (Permissible) |
TWA 5 mg/m3 (fume) TWA 15 mg/m3 (tot dist) TWA 5 mg/m3 (resp dist)[3] |
REL (Recommendit) |
Dust: TWA 5 mg/m3 C 15 mg/m3 Fume: TWA 5 mg/m3 ST 10 mg/m3[3] |
IDLH (Immediate danger) |
500 mg/m3[3] |
| Relatit compoonds | |
Ither anions |
Zinc sulfide Zinc selenide Zinc telluride |
Ither cations |
Cadmium oxide Mercury(II) oxide |
Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa). | |
 verify (whit is  ?) | |
| Infobox references | |
Zinc oxide is an inorganic compoond wi the formula ZnO.
References
[eedit | edit soorce]- 1 2 3 4 Haynes, p. 4.100
- ↑ Takahashi, Kiyoshi; Yoshikawa, Akihiko; Sandhu, Adarsh (2007). Wide bandgap semiconductors: fundamental properties and modern photonic and electronic devices. Springer. p. 357. ISBN 978-3-540-47234-6.
- 1 2 3 4 NIOSH Pocket Guide tae Chemical Hazards 0675
- ↑ Haynes, p. 4.136
- ↑ Haynes, p. 4.144
- ↑ Haynes, p. 4.152
- ↑ Haynes, pp. 5.3, 5.16
- ↑ Zinc oxide. Chem.sis.nlm.nih.gov. Retrieved on 2015-11-17.
- 1 2 3 "Zinc oxide". Immediately Dangerous to Life and Health. National Institute for Occupational Safety and Health (NIOSH).
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