നൈട്രജൻ ഡയോക്സൈഡ്
രാസസം‌യുക്തം
നൈട്രജൻ ഡയോക്സൈഡ് NO
2 എന്ന രാസസൂത്രമുള്ള രാസസംയുക്തമാണ്. നൈജന്റെ അനേകം ഓക്സൈഡുകളിൽ ഒന്നാണിത്. നൈട്രിക് ആസിഡിന്റെ ഉല്പാദനത്തിൽ ലഭിക്കുന്ന ഇത് ലക്ഷക്കണക്കിനു ടൺ ഉല്പാദിപ്പിച്ചുവരുന്നു. ഇത് ഇരുണ്ടുചുവന്ന ഒരു വിഷവാതകമാണ്. വായുമലിനീകരണത്തിനു പ്രധാന കാരണമായ ഇതിനു രൂക്ഷമായ ഗന്ധമാണുള്ളത്.
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 Nitrogen dioxide at -196 °C, 0 °C, 23 °C, 35 °C, and 50 °C
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| Names | |||
|---|---|---|---|
| IUPAC name
Nitrogen dioxide
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| Other names
Nitrogen(IV) oxide,[1] Deutoxide of nitrogen
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| Identifiers | |||
3D model (JSmol)
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| ChEBI | |||
| ChemSpider | |||
| ECHA InfoCard | 100.030.234 | ||
| EC Number |
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| Gmelin Reference | 976 | ||
PubChem CID
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| RTECS number |
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| UN number | 1067 | ||
CompTox Dashboard (EPA)
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| InChI | |||
| SMILES | |||
| Properties | |||
| തന്മാത്രാ വാക്യം | |||
| Molar mass | 0 g mol−1 | ||
| Appearance | Vivid orange gas | ||
| Odor | Chlorine like | ||
| സാന്ദ്രത | 1.88 g dm−3[2] | ||
| ദ്രവണാങ്കം | |||
| ക്വഥനാങ്കം | |||
| Hydrolyses | |||
| Solubility | soluble in CCl 4, nitric acid,[3] chloroform | ||
| ബാഷ്പമർദ്ദം | 98.80 kPa (at 20 °C) | ||
| Refractive index (nD) | 1.449 (at 20 °C) | ||
| Structure | |||
| C2v | |||
| Bent | |||
| Thermochemistry | |||
| Std enthalpy of formation ΔfH |
+34 kJ·mol−1[4] | ||
| Standard molar entropy S |
240 J·mol−1·K−1[4] | ||
| Specific heat capacity, C | 37.5 J/mol K | ||
| Hazards | |||
| Main hazards | Poison, oxidizer | ||
| Safety data sheet | ICSC 0930 | ||
| GHS pictograms |     
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| GHS Signal word | Danger | ||
| H270, H314, H330 | |||
| P220, P260, P280, P284, P305+351+338, P310 | |||
| Lethal dose or concentration (LD, LC): | |||
LC50 (median concentration)
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30 ppm (guinea pig, 1 hr) 315 ppm (rabbit, 15 min) 68 ppm (rat, 4 hr) 138 ppm (rat, 30 min) 1000 ppm (mouse, 10 min)[6] | ||
LCLo (lowest published)
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64 ppm (dog, 8 hr) 64 ppm (monkey, 8 hr)[6] | ||
| NIOSH (US health exposure limits): | |||
PEL (Permissible)
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C 5 ppm (9 mg/m3)[5] | ||
REL (Recommended)
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ST 1 ppm (1.8 mg/m3)[5] | ||
IDLH (Immediate danger)
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20 ppm[5] | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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അവലംബം
തിരുത്തുക- ↑ "nitrogen dioxide (CHEBI:33101)". Chemical Entities of Biological Interest (ChEBI). UK: European Bioinformatics Institute. 13 January 2008. Main. Retrieved 4 October 2011.
- ↑ Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). CRC Press. p. 4.79. ISBN 1439855110.
- ↑ Mendiara, S. N.; Sagedahl, A.; Perissinotti, L. J. (2001). "An electron paramagnetic resonance study of nitrogen dioxide dissolved in water, carbon tetrachloride and some organic compounds". Applied Magnetic Resonance. 20: 275. doi:10.1007/BF03162326.
- ↑ 4.0 4.1 Zumdahl, Steven S. (2009). Chemical Principles 6th Ed. Houghton Mifflin Company. p. A22. ISBN 0-618-94690-X.
- ↑ 5.0 5.1 5.2 "NIOSH Pocket Guide to Chemical Hazards #0454". National Institute for Occupational Safety and Health (NIOSH).
- ↑ 6.0 6.1 "Nitrogen dioxide". Immediately Dangerous to Life and Health. National Institute for Occupational Safety and Health (NIOSH).