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| CAS No.: | 7727-37-9 |
|---|---|
| Name: | Nitrogen |
| Article Data: | 2195 |
| Molecular Structure: | |
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| Formula: | N2 |
| Molecular Weight: | 28.0134 |
| Synonyms: | Diatomicnitrogen;Dinitrogen;Molecular nitrogen;Nitrogen (N2);Nitrogen gas;Nitrogennutrition (plant);Nitrogen-14;CHEBI:17997;HSDB 5060; |
| EINECS: | 231-783-9 |
| Density: | 0.875 g/cm3 |
| Melting Point: | 63.15 K, -210.00 °C, -346.00 °F |
| Boiling Point: | 77.36 K, -195.79 °C, -320.33 °F |
| Solubility: | Soluble in hot sulfuric acid, nitric acid, aqua regia, slowly soluble in hot hydrochloric acid, insoluble in water |
| Appearance: | Colorless odorless gas |
| Safety: | 38 |
| Transport Information: | UN 1066 2.2 |
| PSA: | 47.58000 |
| LogP: | 0.03016 |
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- 90221-55-92-bromo-5-methylbenzaldehyde
- 885590-99-82,3-DIFLUORO-4-IODOBENZALDEHYDE
- 97730-31-9(S)-4'-(2-Methylbutyl)Biphenyl-4-Carbonitrile
- 10102-43-9
nitrogen(II) oxide
- 7727-37-9
nitrogen
| Conditions | Yield |
|---|---|
| With Pd supported ZrO2-CeO2 catalyst at 175 - 400℃; for 1h; Reagent/catalyst; Temperature; Inert atmosphere; | 100% |
| With H2; O2; catalyst: 0.1 wtpercent Pt/La0.7Sr0.2Ce0.1FeO3 In neat (no solvent, gas phase) Kinetics; NO:H2:O2 = 1:0.25:5% gas mixt. with 5% H2O added in feed stream; at 140°C for 20 h; H2O as reagent; detd. by mass spectrometry, gas chromy.; | 93% |
| With (Y0.90Pr0.10)2O(3+x) at 900℃; Temperature; Inert atmosphere; | 79% |
- 7664-41-7
ammonia
- 80937-33-3
oxygen
A
- 7727-37-9
nitrogen
B
- 10102-43-9
nitrogen(II) oxide
C
- 10024-97-2
dinitrogen monoxide
| Conditions | Yield |
|---|---|
| With oxygen In neat (no solvent) Fe-ZSM-5 catalyst prepared by ion exchange and heat-treated at 400, 425or 450 °C, 100 % NH3 conversion, 100 % N2 selectivity, 1000 ppm NH3 in 2 % O2-contg. He; | A 100% B 0% C 0% |
| With catalyst:Fe-mordenite In neat (no solvent) Fe-mordenite catalyst prepared by ion exchange and heat-treated at 425 °C, 92 % NH3 conversion, 99 % N2 selectivity, 1000 ppm NH3 in 2 %O2-contg. He; | A 92% B n/a C 0% |
| With catalyst:Fe-ZSM-5 In neat (no solvent) Fe-ZSM-5 catalyst prepared by ion exchange and heat-treated at 375 °C, 90 % NH3 conversion, 99 % N2 selectivity, 1000 ppm NH3 in 2 % O2-contg. He; | A 90% B n/a C 0% |
| Conditions | Yield |
|---|---|
| at room temperature; | A n/a B 100% |
| at room temperature; | A n/a B 100% |
| Conditions | Yield |
|---|---|
| silver (I) ion In water catalytic oxydation in presence of AgCl at pH=7.2;; | 100% |
| silver (I) ion In water catalytic oxydation in presence of AgI at pH=12.7;; | 91% |
| silver (I) ion In water catalytic oxydation in presence of (Ag(S2O3)2)(3-) at pH=12.7;; | 89% |
| Conditions | Yield |
|---|---|
| 5 d; | A 100% B n/a |
| 5 d; | A 100% B n/a |
| Conditions | Yield |
|---|---|
| With HCl In tetrahydrofuran acidolysis (excess of HCl); | A 100% B 96% |
| In sulfuric acid aq. H2SO4; | A 77% B 90% |
| Conditions | Yield |
|---|---|
| In neat (no solvent, gas phase) by heating to 130-150°C at low pressure; at temp. > 450°CS2, N2, S2N2 are produced; at temp. < 130°C S4N2, S4N4, S2N2 areproduced; various product ratio for various conditions; further products; detected by He I photoelectron spectroscopy and quadrupole mass specrometry; | A 100% B <1 |
- 21373-88-6, 16920-54-0
(PPh3)3CoH(N2)
- 1579-72-2
2,2,2-trifluoroethyl benzoate
A
- 99668-73-2
(trifluoroethoxo)tris(triphenylphosphine)cobalt(I)
B
- 120-51-4
benzoic acid benzyl ester
C
- 7727-37-9
nitrogen
D
- 1333-74-0
hydrogen
E
- 71-43-2
benzene
| Conditions | Yield |
|---|---|
| In toluene PhCOOCH2CF3 added to toluene soln. of CoH(N2)(PPh3)3, evacuated, stirred at 20°C for 2 days; | A n/a B 28% C 100% D 17% E 32% |
| Conditions | Yield |
|---|---|
| In neat (no solvent) loading and unloading carried out in inert gas; heated at 920 K and pressure of 9 bar; elem. anal.; | A 100% B n/a |
| Conditions | Yield |
|---|---|
| In neat (no solvent) High Pressure; loading and unloading carried out in inert gas; heated at 920 K and pressure of 400 bar; elem. anal.; | A 100% B n/a |
- 7727-73-3SODIUM SULFATE DECAHYDRATE
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- 7735-57-12-Oxobenzo[d][1,3]oxathiol-5-yl benzoate
- 77365-64-1pentasodium 2-[[8-[[4-chloro-6-[[3-[[2-(sulphonatooxy)ethyl]sulphonyl]phenyl]amino]-1,3,5-triazin-2-yl]amino]-1-hydroxy-3,6-disulphonato-2-naphthyl]azo]naphthalene-1,5-disulphonate
- 773-82-0Pentafluorobenzonitrile
- 773837-37-9sodium cyanide
- 77402-38-1Hexanedioic acid, polymer with azacyclotridecan-2-one and .alpha.-hydro-.omega.-hydroxypoly(oxy-1,4-butanediyl)
- 104987-11-3Tacrolimus
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- Total:10 Page 1 of 1 1
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History
Nitrogen (Latin nitrogenium, where nitrum (from Greek nitron) means "saltpetre" , and genes means "forming") is formally considered to have been discovered by Daniel Rutherford in 1772, who called it noxious air or fixed air. That there was a fraction of air that did not support combustion was well known to the late 18th century chemist. Nitrogen was also studied at about the same time by Carl Wilhelm Scheele, Henry Cavendish, and Joseph Priestley, who referred to it as burnt air or phlogisticated air. Compounds of nitrogen were known in the Middle Ages.
Consensus Reports
Reported in EPA TSCA Inventory.
Standards and Recommendations
DOT Classification: 2.2; Label: Nonflammable Gas
Specification
The Nitrogen with CAS registry number of 7727-37-9 is also known as Nitrogen gas. The IUPAC name is Molecular nitrogen. It belongs to product categories of Refrigerants; Compressed and Liquefied GasesMicro/Nanoelectronics; Chemical Synthesis; Electronic Chemicals; Gases; Synthetic Reagents; Compressed and Liquefied Gases. Its EINECS registry number is 231-783-9. In addition, the formula is N2 and the molecular weight is 28.01. Besides, this chemical is a colorless odorless gas and should be sealed in cool, ventilated place away from heat, fire at the temperature below 30 °C. In case of insufficient ventilation wear suitable respiratory equipment.
Physical properties about Nitrogen are: (1)ACD/BCF (pH 5.5): 1; (2)ACD/BCF (pH 7.4): 1; (3)#H bond acceptors: 2; (4)Polar Surface Area: 47.58Å2; (5)Index of Refraction: 1.189; (6)Molar Refractivity: 3.871 cm3; (7)Molar Volume: 31.997 cm3; (8)Polarizability: 1.535×10-24cm3; (9)Surface Tension: 23.691 dyne/cm; (10)Density: 0.875 g/cm3; (11)Enthalpy of Vaporization: 5.56 kJ/mol; (12)Vapour Pressure: 431351.344 mmHg at 25 °C.
Preparation of Nitrogen: it is prepared by the fractional distillation of liquid air in industry or by mechanical means using gaseous air. The mechanical means needs low-pressure. Firstly, clear the air of dust and mechanical impurities. Then compressing and removing carbon dioxide. Secondly, dried compressed air is separated into oxygen and nitrogen after liquefaction and distillation. At last, compressed nitrogen is filled into bottle.
Uses of Nitrogen. It has a variety of applications, including serving as an inert replacement for air where oxidation is undesirable. It can be used as a modified atmosphere, an inexpensive alternative to argon, a safety measure on top of liquid explosives and it also can be used as a dielectric gas for high-voltage equipment. Besides, it can be used for the manufacturing of stainless steel and used in military aircraft fuel systems to reduce fire hazard. Nitrogen is commonly used during sample preparation procedures for chemical analysis for concentrating and reducing the volume of liquid samples. What's more, nitrogen tanks are also replacing carbon dioxide as the main power source for paintball guns.
You can still convert the following datas into molecular structure:
1. SMILES: N#NCopyCopied
2. InChI: InChI=1/N2/c1-2
3. InChIKey: IJGRMHOSHXDMSA-UHFFFAOYAF
4. Std. InChI: InChI=1S/N2/c1-2
5. Std. InChIKey: IJGRMHOSHXDMSA-UHFFFAOYSA-N