Skip to Content
MilliporeSigma

338818

Sigma-Aldrich

Ammonium hydroxide solution

28% NH3 in H2O, ≥99.99% trace metals basis

Synonym(s):

Ammonia aqueous, Ammonia water

Sign Into View Organizational & Contract Pricing

Select a Size

About This Item

Linear Formula:
NH4OH
CAS Number:
1336-21-6
Molecular Weight:
35.05
Beilstein/REAXYS Number:
3587154
MDL number:
MFCD00066650
UNSPSC Code:
12352106
eCl@ss:
38060103
PubChem Substance ID:
329754690
NACRES:
NA.21

Key Documents

View All Documentation
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

Quality Level

100

assay

≥99.99% trace metals basis

form

liquid

expl. lim.

27 %

concentration

28% NH3 in H2O

pH

11.7 (20 °C)

solubility

water: soluble

density

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

storage temp.

2-8°C

SMILES string

[NH4+].[OH-]

InChI

1S/H3N.H2O/h1H3;1H2

InChI key

VHUUQVKOLVNVRT-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Related Categories

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

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_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
MKCJ9750
MKCP0543
MKCL9108
MKCH3127
SHBK0854

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Shelley Stafford et al.
Nanomaterials (Basel, Switzerland), 8(12) (2018-12-16)
In this work, new magnetic-plasmonic nanocomposites have been developed through the use of two complementary polyelectrolytes⁻polystyrene sulfonate (PSS) and poly(allylamine hydrochloride) (PAH). PSS, a negatively charged polyelectrolyte, was utilized as a stabiliser for magnetite nanoparticles, and PAH, a positively charged
Martin P Pothier et al.
Frontiers in microbiology, 9, 2310-2310 (2018-10-20)
Despite its high toxicity and widespread occurrence in many parts of the world, arsenic (As) concentrations in decentralized water supplies such as domestic wells remain often unquantified. One limitation to effective monitoring is the high cost and lack of portability
Konstantin Chingin et al.
Analytical chemistry, 84(15), 6856-6862 (2012-07-12)
We introduce an online multiple-junction capillary isoelectric focusing fractionator (OMJ-CIEF) for separation of biological molecules in solution by pI. In OMJ-CIEF, the separation capillary is divided into seven equal sections joined with each other via tubular Nafion membrane insertions. Each
Enrique Cequier et al.
Analytica chimica acta, 845, 98-104 (2014-09-10)
Organophosphate triesters are common flame retardants used in a wide variety of consumer products from which they can migrate and pollute the indoor environment. Humans may thus be continuously exposed to several organophosphate triesters which might be a risk for
Aurélie Periat et al.
Journal of chromatography. A, 1356, 211-220 (2014-07-16)
In this study, the influence of electrospray ionization (ESI) source design on the overall sensitivity achieved in hydrophilic interaction chromatography (HILIC) and reversed phase liquid chromatography (RPLC), was investigated. State-of-the-art triple quadrupole mass analyzers from AB Sciex, Agilent Technologies and
View All Related Papers

Articles

High-Energy Lithium-Ion Batteries

Experts discuss challenges and production processes of nickel-rich layered oxide cathode materials in energy storage systems.

Newly Developed Porous Graphitic Carbon in U/HPLC

Polar graphitic carbon enables UHPLC separation of highly polar pesticides, herbicides, and Vitamin D metabolites, advancing liquid chromatography capabilities.

Protocols

UHPLC/MS for Drug Detection in Urine

Optimize β-glucuronidase hydrolysis for glucuronide metabolite analysis considering factors like time, temperature, pH, and enzyme concentration.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service