338818
Ammonium hydroxide solution
28% NH3 in H2O, ≥99.99% trace metals basis
Synonym(s):
Ammonia aqueous, Ammonia water
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About This Item
Linear Formula:
NH4OH
CAS Number:
Molecular Weight:
35.05
NACRES:
NA.21
PubChem Substance ID:
eCl@ss:
38060103
UNSPSC Code:
12352106
MDL number:
Beilstein/REAXYS Number:
3587154
Assay:
≥99.99% trace metals basis
Concentration:
28% NH3 in H2O
Form:
liquid
InChI
1S/H3N.H2O/h1H3;1H2
SMILES string
[NH4+].[OH-]
InChI key
VHUUQVKOLVNVRT-UHFFFAOYSA-N
assay
≥99.99% trace metals basis
form
liquid
expl. lim.
27 %
concentration
28% NH3 in H2O
pH
11.7 (20 °C)
Quality Level
solubility
water: soluble
density
0.9 g/mL at 25 °C (lit.), 0.9 g/mL at 25 °C
storage temp.
2-8°C
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General description
Ammonium hydroxide solution is also called aqueous ammonia, aqua ammonia, or ammonia water. It is a weak base mainly used as a nitrogen source to prepare other nitrogen-containing organic and inorganic chemicals such as urea, ammonium carbonate, ammonium sulfate, etc.
Application
Ammonium hydroxide solution (28% NH3 in H2O) can be used as:
- A medium to prepare magnetite (Fe3O4) nanoparticles via a modified controlled chemical coprecipitation method using divalent or trivalent iron salts as iron precursors.
- A reagent in ammonolysis.
- A solvent to synthesize 1, 4 dihydropyridines via one-pot condensation of an aldehyde and alkyl acetoacetate.
signalword
Danger
hcodes
Hazard Classifications
Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Skin Corr. 1 - STOT SE 3
target_organs
Respiratory system
Storage Class
8B - Non-combustible corrosive hazardous materials
wgk
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
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