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7664-41-7

Basic Information
CAS No.: 7664-41-7
Name: Ammonia
Article Data: 3119
Molecular Structure:
Molecular Structure of 7664-41-7 (Ammonia)
Formula: NH3
Molecular Weight: 17.0305
Synonyms: Ammoniagas;Ammonia-14N;Nitro-Sil;R 717;R 717 (ammonia);Refrigerent R717;Spiritof Hartshorn;
EINECS: 231-635-3
Density: 1.023g/mLat 25°C
Melting Point: - 77.73 °C, 195 K, -108 °F
Boiling Point: - 33.34 °C, 240 K, -28 °F
Flash Point: 52°F
Solubility: in water: 47% (0 °C), 31% (25 °C),28% (50 °C)
Appearance: Colourless gas with strong pungent odour
Hazard Symbols: ToxicT; DangerousN
Risk Codes: 10-23-34-50
Safety: 26-45-36/37/39-16-9-61
Transport Information: UN 1005/2073
PSA: 3.24000
LogP: 0.32390
Synthetic route
7697-37-2

nitric acid

7664-41-7

ammonia

Conditions
ConditionsYield
In water Electrolysis; Cu-cathode, in presence of H2SO4;;100%
With aluminium In water at elevated pressure;;0%
With aluminium In water only small amounts of NH3 in dild. HNO3 (5%-20%) at atmospheric pressure;;

barium cyanide

A

7664-41-7

ammonia

B

barium(II) hydroxide

Conditions
ConditionsYield
With water byproducts: CO; heating with H2O vapour to 300°C;A 100%
B n/a
With H2O
180893-21-4

cis,trans-[WCl2(NNC5H2Me3-2,4,6)(C2H4)(PMe2Ph)2][BF4]

7664-41-7

ammonia

Conditions
ConditionsYield
With KOH In methanol byproducts: 2,4,6-trimethylpyridine; N2-atmosphere; excess KOH, stirring at room temp. for 1 h; collection of pyridine derivative (cold trap), colorimetry of NH3;100%

cis,trans-[WCl2(NNC5H4OMe-4)(C2H4)(PMe2Ph)2][ClO4] * 0.5(CH2Cl2)

7664-41-7

ammonia

Conditions
ConditionsYield
With KOH In methanol byproducts: 4-methoxypyridine; N2-atmosphere; excess KOH, stirring at room temp. for 1 h; collection of pyridine derivative (cold trap), colorimetry of NH3;100%

C10H15NO9

7664-41-7

ammonia

Conditions
ConditionsYield
Alkaline conditions;100%
Conditions
ConditionsYield
With oxygen In water at 200℃; Catalytic behavior; Temperature; Flow reactor; Inert atmosphere;A 100%
B 100%

(methyl)3boron*NH3

A

593-90-8

trimethylborane

B

7664-41-7

ammonia

Conditions
ConditionsYield
at 130.0°C, 74.1 Torr equilibrium;A 99.6%
B 99.6%
at 130.0°C, 74.1 Torr equilibrium;A 99.6%
B 99.6%
at 54.8°C, 57.6 Torr equilibrium;A 90.8%
B 90.8%
at 54.8°C, 57.6 Torr equilibrium;A 90.8%
B 90.8%

trans-[W(NNH2)(OSO2CF3)(PMe2Ph)4](OSO2CF3)

1333-74-0

hydrogen

A

7664-41-7

ammonia

B

302-01-2

hydrazine

Conditions
ConditionsYield
With [(C5H5)Mo(S2CH2)(S)(SH)Mo(C5H5)](OSO2CF3) In tetrahydrofuran Schlenk techniques; 10 equiv. of Mo complex in THF stirred at 25°C for 5 min under N2; N2 replaced by 1 atm of H2; W complex added portionwise; stirred at 25°C for 24 h and then at 55°C for 24 h; evapd. under reduced pressure; distillate trapped in dilute H2SO4 soln.;residue extd. with H2O, treated with activated charcoal, filtered throu gh Celite;A 99%
B 1%
1333-74-0

hydrogen

10102-43-9

nitrogen(II) oxide

10102-44-0

Nitrogen dioxide

7664-41-7

ammonia

Conditions
ConditionsYield
With catalyst: Ni(2+)Y zeolite In neat (no solvent) reduction of very dild. mixt. of NO/NO2 in gas mixt. of N2/H2 on zeolite catalyst (300°C reaction temp.); gas chromy. (dimethylsulfolane coated diatomite);99%
With catalyst: industrial nickel methanation catalyst In neat (no solvent) reduction of very dild. mixt. of NO/NO2 in gas mixt. of N2/H2 on zeolite catalyst (300°C reaction temp.); gas chromy. (dimethylsulfolane coated diatomite);99%
With catalyst: phthalocyanineNiY zeolite In neat (no solvent) reduction of very dild. mixt. of NO/NO2 in gas mixt. of N2/H2 on zeolite catalyst (230°C reaction temp.); gas chromy. (dimethylsulfolane coated diatomite);94%
With catalyst: NiY zeolite In neat (no solvent) reduction of very dild. mixt. of NO/NO2 in gas mixt. of N2/H2 on zeolite catalyst (450°C reaction temp.); gas chromy. (dimethylsulfolane coated diatomite);84%

trans-bis[1,2-bis(diphenylphosphino)ethane]bis(dinitrogen)tungsten(0)

[(η5-C5H5)Mo(μ2-S2CH2)(μ-S)(μ-SH)Mo(η5-C5H5)](OSO2CF3)

1333-74-0

hydrogen

A

[(η5-C5H5)Mo(μ2-S2CH2)(μ-S)2Mo(η5-C5H5)]

trans-bis[1,2-bis(diphenylphosphino)ethane]hydrazido(triflato)tungsten triflate

C

7664-41-7

ammonia

Conditions
ConditionsYield
In tetrahydrofuran Schlenk techniques; 2 equiv. of Mo complex in THF stirred at 25°Cfor 5 min under N2; N2 replaced by 1 atm of H2; W complex added portion wise; stirred at 25°C for 1 h; solvent removed under vac.; dissolved in THF-d8; not isolated; detd. by NMR spectra;A 84%
B 99%
C 0%
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  • AMMonia (ca. 4% in Methanol, ca. 2.0Mol/L) CAS NO.7664-41-7

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    MSDS/COA Download

    Anhydrous Ammonia 99.8% for Phiippines Refrigerant

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History

The Romans called the ammonium chloride deposits they collected from near the Temple of Jupiter Amun  in ancient Libya 'sal ammoniacus' (salt of Amun) because of proximity to the nearby temple.Salts of ammonia have been known from very early times; thus the term Hammoniacus  appears in the writings of Pliny, although it is not known whether the term is identical with the more modern sal-ammoniac.
In the form of sal-ammoniac, ammonia was known to the Muslim alchemists as early as the 8th century, first mentioned by Geber, and to the European alchemists since the 13th century, being mentioned by Albertus Magnus. It was also used by dyers in the Middle Ages in the form of fermented urine to alter the colour of vegetable dyes.
In the 15th century, Basilius Valentinus showed that ammonia could be obtained by the action of alkalis on sal-ammoniac. At a later period, when sal-ammoniac was obtained by distilling the hooves and horns of oxen and neutralizing the resulting carbonate with hydrochloric acid, the name "spirit of hartshorn" was applied to ammonia.
In 1774, gaseous ammonia was first isolated by Joseph Priestley and was termed by him alkaline air; however it was acquired by the alchemist Basil Valentine.
In 1785, Claude Louis Berthollet ascertained its composition.
The Haber process to produce ammonia from the nitrogen in the air was developed by Fritz Haber and Carl Bosch in 1909 and patented in 1910.

Specification

The Ammonia, with the CAS registry number 7664-41-7 and EINECS registry number 231-635-3, is a colourless gas with a characteristic pungent odour. And the molecular formula of this chemical is NH3. It is also hygroscopic, and belongs to the following product categories: Industrial/Fine Chemicals; refrigerants; Inorganics; Chemical Synthesis; Alternative Energy; AmidesChemical Synthesis; Compressed and Liquefied Gases; Materials for Hydrogen Storage; Synthetic Reagents. What's more, it is soluble in water, and should be stored at 0-6°C.

The Ammonia can be found in trace quantities in the atmosphere, and being produced from the putrefaction (decay process) of nitrogenous animal and vegetable matter. Ammonia and its salts can also be found in small quantities in rainwater. Ammonium chloride and ammonium sulfate can be found in volcanic districts. What's more, crystals of ammonium bicarbonate have been found in Patagonian guano.

The physical properties of Ammonia are as following: (1)#H bond acceptors: 1; (2)#H bond donors: 3; (3)#Freely Rotating Bonds: 0; (4)Polar Surface Area: 0 Å2; (5)Enthalpy of Vaporization: 23.33 kJ/mol; (6)Vapour Pressure: 5992.52 mmHg at 25°C.

Preparation of Ammonia: It can be preparation by the reaction between hydrogen and nitrogen (derived from process air), and the reaction will need magnetite catalyst under high pressure to form anhydrous liquid ammonia: 3 H2 + N2 → 2 NH3

Uses of Ammonia: Most ammonia is used as fertilizers either as its salts or as solutions. And it is directly or indirectly used as the precursor to most nitrogen-containing compounds. Household ammonia is a solution of NH3 in water (i.e., ammonium hydroxide) which is used as a general purpose cleaner for many surfaces. In addition, Ammonia solution(at 16-25%) is used in fermentation industry as a source of Nitrogen for the Micro-organisms as well as to adjust the pH during the Fermentation.

You should be cautious while dealing with this chemical. It is a kind of flammable chemical which is toxic by inhalation. It may also cause burns, and very toxic to aquatic organisms. Therefore, you had better take the following instructions: Wear suitable protective clothing, gloves and eye/face protection, and in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice; Keep container in a well-ventilated place; Keep away from sources of ignition - No smoking; In case of accident or if you feel unwell, seek medical advice immediately (show label where possible); Avoid release to the environment. Refer to special instructions safety data sheet.

You can still convert the following datas into molecular structure:
(1)SMILES: N
(2)InChI: InChI=1/H3N/h1H3
(3)InChIKey: QGZKDVFQNNGYKY-UHFFFAOYAF

The toxicity data is as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
cat LC50 inhalation 7gm/m3/1H (7000mg/m3) PERIPHERAL NERVE AND SENSATION: FLACCID PARALYSIS WITHOUT ANESTHESIA (USUALLY NEUROMUSCULAR BLOCKAGE)

BEHAVIORAL: EXCITEMENT
Journal of Industrial Hygiene and Toxicology. Vol. 26, Pg. 29, 1944.
human LCLo inhalation 5000ppm/5M (5000ppm)   Tabulae Biologicae. Vol. 3, Pg. 231, 1933.
human TCLo inhalation 20ppm (20ppm) SENSE ORGANS AND SPECIAL SENSES: ULCERATED NASAL SEPTUM: OLFACTION

SENSE ORGANS AND SPECIAL SENSES: CONJUNCTIVE IRRITATION: EYE

LUNGS, THORAX, OR RESPIRATION: STRUCTURAL OR FUNCTIONAL CHANGE IN TRACHEA OR BRONCHI
Archiv fuer Gewerbepathologie und Gewerbehygiene. Vol. 13, Pg. 528, 1955.
mammal (species unspecified) LCLo inhalation 5000ppm/5M (5000ppm)   Naunyn-Schmiedeberg's Archiv fuer Experimentelle Pathologie und Pharmakologie. Vol. 138, Pg. 65, 1928.
man LDLo unreported 132mg/kg (132mg/kg)   "Poisoning; Toxicology, Symptoms, Treatments," 2nd ed., Arena, J.M., Springfield, IL, C.C. Thomas, 1970Vol. 2, Pg. 73, 1970.
man TDLo oral 15uL/kg (0.015mL/kg) GASTROINTESTINAL: CHANGE IN STRUCTURE OR FUNCTION OF ESOPHAGUS American Journal of Emergency Medicine. Vol. 3, Pg. 320, 1985.
mouse LC50 inhalation 4230ppm/1H (4230ppm) BEHAVIORAL: TREMOR

BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

BEHAVIORAL: ATAXIA
Federation Proceedings, Federation of American Societies for Experimental Biology. Vol. 41, Pg. 1568, 1982.
rabbit LC50 inhalation 7gm/m3/1H (7000mg/m3) PERIPHERAL NERVE AND SENSATION: FLACCID PARALYSIS WITHOUT ANESTHESIA (USUALLY NEUROMUSCULAR BLOCKAGE)

BEHAVIORAL: EXCITEMENT
Journal of Industrial Hygiene and Toxicology. Vol. 26, Pg. 29, 1944.
rat LC50 inhalation 2000ppm/4H (2000ppm)   "Toxicology of Drugs and Chemicals," Deichmann, W.B., New York, Academic Press, Inc., 1969Vol. -, Pg. 607, 1969.