Zinc oxide

Zinc oxide
Names
	Ither names Zinc white, calamine, filosofer's oo, Cheenese white, flouers o zinc
Identifiers
CAS Nummer	1314-13-2 ;
3D model (JSmol)	Interactive eemage;
ChEBI	CHEBI:36560 ;
ChEMBL	ChEMBL1201128 ;
ChemSpider	14122 ;
EC Nummer	215-222-5
PubChem CID	14806;
RTECS nummer	ZH4810000
	InChI InChI=1S/O.Zn Key: XLOMVQKBTHCTTD-UHFFFAOYSA-N ;
	SMILES [Zn]=O;
Properties
Chemical formula	ZnO
Molar mass	81.406 g/mol
Appearance	White solit
Odour	Odourless
Density	5.1 g/cm3
Meltin pynt	1,974 °C (3,585 °F; 2,247 K) (decompones)
Bylin pynt	1,974 °C (3,585 °F; 2,247 K) (decompones)
Solubility in watter	0.0004% (17.8°C)
Baund gap	3.3 eV (direct)
Magnetic susceptibility	−27.2·10−6 cm3/mol
Refractive index (nD)	n1=2.013, n2=2.029
Structur
Creestal structur	Wurtzite
Space group	C6v4-P63mc
Lattice constant	a = 3.2495 Å, c = 5.2069 Å
Formula units (Z)	2
Coordination geometry	Tetrahedral
Thermochemistry
Speceefic heat capacity, C	40.3 J·K−1mol−1
Staundart molar; entropy So298	43.7±0.4 J·K−1mol−1
Std enthalpy o; formation ΔfHo298	-350.5±0.3 kJ mol−1
Gibbs free energy (ΔfG˚)	-320.5 kJ mol−1
Pharmacology
ATCvet code	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	1 2 0
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); 7950 mg/kg (ratton, oral)
LC50 (Median concentration)	2500 mg/m3 (moose)
LCLo (Lawest published)	2500 mg/m3 (guinea pig, 3–4 h)
	US heal exposur leemits (NIOSH):
PEL (Permissible)	TWA 5 mg/m3 (fume) TWA 15 mg/m3 (tot dist) TWA 5 mg/m3 (resp dist)
REL (Recommendit)	Dust: TWA 5 mg/m3 C 15 mg/m3; Fume: TWA 5 mg/m3 ST 10 mg/m3
IDLH (Immediate danger)	500 mg/m3
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).
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	Infobox references

Zinc oxide is an inorganic compoond wi the formula Zn O.

References

[1]

[5]

[2]

[3]

[4]

[6]

[7]

[8]

[9]

Names

Ither names Zinc white, calamine, filosofer's oo, Cheenese white, flouers o zinc
Identifiers
CAS Nummer	1314-13-2^Y
3D model (JSmol)	Interactive eemage
ChEBI	CHEBI:36560^Y
ChEMBL	ChEMBL1201128^N
ChemSpider	14122^Y
EC Nummer	215-222-5
PubChem CID	14806
RTECS nummer	ZH4810000
InChI InChI=1S/O.Zn^Y Key: XLOMVQKBTHCTTD-UHFFFAOYSA-N^Y
SMILES [Zn]=O
Properties
Chemical formula	Zn O
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]^[5]
Bylin pynt	1,974 °C (3,585 °F; 2,247 K) (decompones)
Solubility in watter	0.0004% (17.8°C)^[2]
Baund gap	3.3 eV (direct)
Magnetic susceptibility	−27.2·10⁻⁶ cm³/mol^[3]
Refractive index (n_D)	n₁=2.013, n₂=2.029^[4]
Structur^[6]
Creestal structur	Wurtzite
Space group	C_6v⁴-P6₃mc
Lattice constant	a = 3.2495 Å, c = 5.2069 Å
Formula units (Z)	2
Coordination geometry	Tetrahedral
Thermochemistry^[7]
Speceefic heat capacity, C	40.3 J·K⁻¹mol⁻¹
Staundart molar entropy S^o₂₉₈	43.7±0.4 J·K⁻¹mol⁻¹
Std enthalpy o formation Δ_fH^o₂₉₈	-350.5±0.3 kJ mol⁻¹
Gibbs free energy (Δ_fG˚)	-320.5 kJ mol⁻¹
Pharmacology
ATCvet code	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	1 2 0
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]
LC_Lo (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)^[2]
REL (Recommendit)	Dust: TWA 5 mg/m³ C 15 mg/m³ Fume: TWA 5 mg/m³ ST 10 mg/m³^[2]
IDLH (Immediate danger)	500 mg/m³^[2]
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).
Y verify (whit is ^YN ?)
Infobox references