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CAS No 7727-37-9 , molecular nitrogen

  • Name: molecular nitrogen
  • Synonyms: Nitrogeno [Spanish]; Nitrogen-14; Nitrogen (liquified);molecular nitrogen; MOL Nitrogen; Molecular nitrogen;Nitrogen gas; Dinitrogen; Azote [French];
  • CAS Registry Number:
  • Transport: UN 1066/1977
  • Melting Point: -210 ºC
  • Flash Point: °C
  • Boiling Point: -196 ºC
  • Density: 1.2506
  • Water Solubility: negligible in water
  • Safety Statements: Low toxicity. In high concentrations it is a simple asphyxiant. The release of nitrogen from solution in the blood, with formation of small bubbles, is the cause of most of the symptoms and changes found in compressed air illness (caisson disease). It is a narcotic at high concentration and high pressure. Both the narcotic effects and the bends are hazards of compressed air atmospheres such as found in underwater diving. Nonflammable gas. Can react violently with lithium, neodymium, titanium under the proper conditions. See also ARGON.
  • Flash Point: °C
  • EINECS: 231-783-9
  • Molecular Weight: 28.0134
  • InchiKey: IJGRMHOSHXDMSA-UHFFFAOYSA-N
  • InChI: InChI=1S/N2/c1-2
  • Risk Statements: S38
  • Molecular Formula: N2
  • Molecular Structure:CAS No:7727-37-9 molecular nitrogen
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7727-37-9 Compressed Nitrogen

  • China Chemrio International Limited [Manufacturer]
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7727-37-9 Compressed Nitrogen

  • China Hangzhou Sage Chemical Co., Ltd. [, Manufacturer]
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7727-37-9 Compressed Nitrogen

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7727-37-9 Compressed Nitrogen

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7727-37-9 Compressed Nitrogen

  • China China Langchem Inc. []
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7727-37-9 Argon Gas

  • India Sparchem []
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7727-37-9 Liquid Nitrogen

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7727-37-9 Nitrogen

  • United States Ricca Chemical Company [Manufacturer]
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7727-37-9 Nitrogen

  • United States Matheson Tri-Gas [Importer/Exporter]
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7727-37-9 Nitrogen

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References of molecular nitrogen
Title: Nitrogen
CAS Registry Number: 7727-37-9
Literature References: N; at. wt 14.00674; at. no. 7; valences 3, 5; elemental state: N2. Group VA (15). Two naturally occurring isotopes: 14 (99.635%); 15 (0.365%); five short-lived, artificial, radioactive isotopes: 12; 13; 16-18. Discovered in 1772 by Daniel Rutherford and independently by Scheele and Cavendish. Constitutes about 75.5% by weight or 78.06% by volume of the atmosphere; found frequently in volcanic or mine gases, gases from springs and gases occluded in minerals and rocks; an essential constituent of all living organisms; fixed or combined nitrogen is present in many mineral deposits. Prepn from sodium (and alkaline earth) azides by heating the azide: Tiede, Ber. 46, 4100 (1913); 49, 1745 (1916); Justi, Ann. Phys. [5] 10, 985 (1931). Prepd industrially by fractional distln of liquid air; by removal of oxygen by combustion; by reduction of ammonia. Purification of nitrogen furnished in steel cylinders: Kautsky, Thiele, Z. Anorg. Allg. Chem. 152, 342 (1926); Kendall, Science 73, 395 (1931); Schenk in Handbook of Preparative Inorganic Chemistry vol. 1, G. Brauer, Ed. (Academic Press, New York, 2nd ed., 1963) pp 458-460. Review of nitrogen and nitrogen compounds: Jones in Comprehensive Inorganic Chemistry vol. 2, J. C. Bailar, Jr. et al., Eds. (Pergamon Press, Oxford, 1973) pp 147-388; R. W. Schroeder in Kirk-Othmer Encyclopedia of Chemical Technology vol. 15 (Wiley-Interscience, New York, 3rd ed., 1981) pp 932-941. Books: W. L. Jolly, The Inorganic Chemistry of Nitrogen (Benjamin, New York, 1964) 124 pp; Mellor's Vol. VIII, Supplements I, II, Nitrogen, part 1 (1964) 619 pp; part 2 (1967) 676 pp; M. Sittig, Nitrogen in Industry (Van Nostrand, Princeton, 1965) 278 pp.
Properties: Odorless gas; condenses to a liq, bp -195.79° (77.36 K); solidifies to a snow-white mass, mp -210.01° (63.14 K). dgas (0°, 1 atm) 1.25046 g/l. Critical temp: -147.1°; critical press: 33.5 atm; critical density: 0.311 g/cm3. Sparingly sol in water: 100 volumes of water absorbs 2.4 volumes of gas at 0°, 1.6 volumes at 20°. Soly in water at 50, 75 and 100° from 25 to 1000 atmospheres: Wiebe et al., J. Am. Chem. Soc. 55, 947 (1933). Soly in liq ammonia: Wiebe et al., ibid. 975. Soly in alc: one volume of alcohol dissolves 0.1124 volume of nitrogen at 20°. Liquid oxygen at -195.5° absorbs 50.7% of its weight of gaseous nitrogen. Heat of dissociation of the nitrogen molecule (N2): 225.1 kcal/mole. Combines with oxygen and hydrogen on sparking, forming nitric oxide and ammonia, respectively. Combines directly with lithium, and at a red heat with calcium, strontium, and barium to form nitrides. Forms cyanides when heated with carbon in presence of alkalies or barium oxide.
Melting point: mp -210.01° (63.14 K)
Boiling point: bp -195.79° (77.36 K)
Density: dgas (0°, 1 atm) 1.25046 g/l
CAUTION: In high concns it is a simple asphyxiant.
Use: In manuf of ammonia, nitric acid, nitrates, cyanides, etc.; in manuf explosives; in filling high-temp thermometers, incandescent bulbs; to form an inert atm for preservation of materials, for use in dry boxes or glove bags. Liquid nitrogen in food-freezing processes; in the laboratory as a coolant. Pharmaceutic aid (air displacement).