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499145

Sigma-Aldrich

Ammonia solution

7 N in methanol

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About This Item

Linear Formula:
NH3
CAS Number:
7664-41-7
Molecular Weight:
17.03
MDL number:
MFCD00011418
UNSPSC Code:
12352300
PubChem Substance ID:
329757544
NACRES:
NA.55

form

liquid

Quality Level

100

concentration

6.5-7.5 M (by NaOH, titration)
7 N in methanol

impurities

≤0.1% water (Karl Fischer)

density

0.779 g/mL at 25 °C

storage temp.

2-8°C

SMILES string

N

InChI

1S/H3N/h1H3

InChI key

QGZKDVFQNNGYKY-UHFFFAOYSA-N

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General description

Ammonia solution is commonly used as a pH-adjusting or buffering agent in a variety of liquid formulations. It also acts as a base in some chemical reactions.

Application

Ammonia solution (7N methanolic ammonia) can be used in the synthesis of:      
  • Hydrogen halide salts of primary amines from corresponding halides under microwave irradiation.      
  • N-alkylbis(3-aminopropyl)amines by Raney nickel catalyzed hydrogenation of N-alkylbis(cyanoethyl)amines.
  • 2-quinoxalinecarboxamide by ammonolysis of 2-methoxycarbonylquinoxaline.

Ammonia solution (7N methanolic ammonia) may be used in the preparation of trioxolanes. It may also be used in the preparation of hydrogen halide salts (HX) of primary amines under microwave irradiation.

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Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 3 - Eye Dam. 1 - Flam. Liq. 2 - Skin Corr. 1B - STOT SE 1

target_organs

Eyes,Central nervous system

supp_hazards

EUH071

Storage Class

3 - Flammable liquids

wgk_germany

WGK 3

flash_point_f

57.2 °F - closed cup

flash_point_c

14 °C - closed cup

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Certificates of Analysis (COA)

Lot/Batch Number
0000419341
0000419341
0000427812
0000427812
0000423442

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Microwave-assisted synthesis of primary amine HX salts from halides and 7M ammonia in methanol.
Saulnier MG, et al.
Tetrahedron Letters, 45(2), 397-399 (2004)
Weak base dispiro-1,2,4-trioxolanes: potent antimalarial ozonides.
Tang Y, et al.
Bioorganic & Medicinal Chemistry Letters, 17(5), 1260-1265 (2007)
Eagleson M.
Concise Encyclopedia Chemistry, 65-66 (1994)
Ledgard J.
The Preparatory Manual of Explosives., 41-41 (2007)
Lars Nybo et al.
The Journal of physiology, 563(Pt 1), 285-290 (2004-12-22)
We evaluated whether peripheral ammonia production during prolonged exercise enhances the uptake and subsequent accumulation of ammonia within the brain. Two studies determined the cerebral uptake of ammonia (arterial and jugular venous blood sampling combined with Kety-Schmidt-determined cerebral blood flow;
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