17093

Sigma-Aldrich

Ammonium hydroxide solution

puriss. p.a. plus, ≥25% NH3 in H2O

Synonym(s):
Ammonia aqueous, Ammonia water
Linear Formula:
NH4OH
CAS Number:
Molecular Weight:
35.05
Beilstein/REAXYS Number:
3587154
MDL number:
eCl@ss:
38060103
PubChem Substance ID:
NACRES:
NA.21

grade

puriss. p.a. plus

Quality Level

assay

≥25%

form

liquid

expl. lim.

27 %

concentration

≥25% NH3 in H2O

evapn. residue

≤0.001%

pH

11.7 (20 °C)

density

0.91 g/mL at 20 °C
0.9 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤0.2 mg/kg
phosphate (PO43-): ≤0.2 mg/kg
sulfate (SO42-): ≤1 mg/kg

cation traces

Ag: ≤0.01 mg/kg
As, Sb (as As): ≤0.01 mg/kg
Au: ≤0.01 mg/kg
B: ≤0.01 mg/kg
Ba: ≤0.01 mg/kg
Be: ≤0.01 mg/kg
Bi: ≤0.01 mg/kg
Ca: ≤0.01 mg/kg
Cd: ≤0.01 mg/kg
Co: ≤0.01 mg/kg
Cr: ≤0.01 mg/kg
Cs: ≤0.01 mg/kg
Cu: ≤0.01 mg/kg
Fe: ≤0.01 mg/kg
Ga: ≤0.01 mg/kg
Ge: ≤0.01 mg/kg
In: ≤0.01 mg/kg
K: ≤0.01 mg/kg
Li: ≤0.01 mg/kg
Mg: ≤0.01 mg/kg
Mn: ≤0.01 mg/kg
Mo: ≤0.01 mg/kg
Na: ≤0.01 mg/kg
Ni: ≤0.01 mg/kg
Pb: ≤0.01 mg/kg
Pt: ≤0.01 mg/kg
Sn: ≤0.01 mg/kg
Sr: ≤0.01 mg/kg
Ti: ≤0.01 mg/kg
Tl: ≤0.01 mg/kg
V: ≤0.01 mg/kg
Zn: ≤0.01 mg/kg
Zr: ≤0.01 mg/kg

SMILES string

[NH4+].[OH-]

storage temp.

2-8°C

InChI

1S/H3N.H2O/h1H3;1H2

InChI key

VHUUQVKOLVNVRT-UHFFFAOYSA-N

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General description

Ammonium hydroxide is a weak base mainly used as a source to prepare other ammonium compounds like urea, ammonium carbonate and ammonium sulfate etc.
Ammonium hydroxide solution is a solution of 30-33% NH3 in H2O. It is a colorless liquid having a strong characteristic odor. Electrolytic deposition of silver onto vitreous carbon electrodes from ammonium hydroxide solutions by the potential step technique has been reported.

Application

Ammonium hydroxide solution may be used in the following studies:
  • Preparation of magnetic nanoparticles.
  • To investigate the effect of substrate on the morphology of ZnS thin films by chemical bath deposition.
  • Preparation of amine functionalized cellulose nanocrystals (CNC-NH2).
  • Wet processing of the GaAs(100) surface.
Ammonium hydroxide solution may be used:
  • As a medium to prepare magnetite (Fe3O4) nanoparticles via a modified controlled chemical coprecipitation method.
  • As a solvent and reagent to prepare 4-aryl and 4-alkyl-2,6-dimethyl-1,4-dihydro-3,5-pyridinedicarboxylates via Hantzsch synthesis in a microwave cavity synthesizer.

Signal Word

Danger

Hazard Statements

hazcat

Aquatic Acute 1 - Aquatic Chronic 2 - Eye Dam. 1 - Skin Corr. 1 - STOT SE 3

Target Organs

Respiratory system

storage_class_code

8B - Non-combustible, corrosive hazardous materials

WGK Germany

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

Claudia M Gómez-Gutiérrez et al.
Scanning, 37(6), 389-392 (2015-05-27)
In this work, the influence of substrate on the morphology of ZnS thin films by chemical bath deposition is studied. The materials used were zinc acetate, tri-sodium citrate, thiourea, and ammonium hydroxide/ammonium chloride solution. The growth of ZnS thin films...
Jong-Hee Kim et al.
Journal of nanoscience and nanotechnology, 14(11), 8739-8744 (2015-05-12)
Magnetic nanoparticles were synthesized by the addition of ammonium hydroxide to an iron chloride solution by chemical co-precipitation. In order to examine systematically the crystal phase, average size, and magnetic properties of the magnetic nanoparticles, the following were used as...
Ramakrishna A
Goyal?s IIT foundation course chemistry: For Class-9, 160-160 (2014)
Synthesis and characterization of biocompatible Fe3O4 nanoparticles.
Sun J, et al.
Journal of Biomedical Materials Research Part A, 80(2), 333-341 (2007)
An efficient and fast procedure for the Hantzsch dihydropyridine synthesis under microwave conditions.
Oehberg L and Westman J
Synlett, 2001(08), 1296-1298 (2001)

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