Merck
All Photos(1)

30501

Sigma-Aldrich

Ammonium hydroxide solution

puriss. p.a., reag. ISO, reag. Ph. Eur., ~25% NH3 basis

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

Agency

USP/NF
reag. ISO
reag. Ph. Eur.

description

related substances ≤ 2 ppm (as pyridine)

grade

puriss. p.a.

assay

~25% NH3 basis

form

liquid

expl. lim.

27 %

impurities

readily oxidisable substances, in accordance
≤0.0001% heavy metals (as Pb)
≤0.0005% KMnO4 red. matter (as O)
≤0.0018% non-volatile matter

evapn. residue

≤0.0018%

pH

11.7 (20 °C)

density

0.892-0.910 g/mL at 20 °C
0.9 g/mL at 25 °C (lit.)

anion traces

carbonate (CO32-): ≤60 ppm
carbonate (as CO2): ≤10 ppm
chloride (Cl-): ≤0.5 ppm
phosphate (PO43-): ≤0.5 ppm
silicate (as SiO2): ≤10 ppm
sulfate (SO42-): ≤2 ppm
sulfide (S2-): ≤0.2 ppm

cation traces

Ag: ≤0.02 ppm
Al: ≤0.5 ppm
Au: ≤0.1 ppm
Ba: ≤0.05 ppm
Bi: ≤0.1 ppm
Ca: ≤1 ppm
Cd: ≤0.05 ppm
Co: ≤0.05 ppm
Cr: ≤0.05 ppm
Cu: ≤0.1 ppm
Fe: ≤0.1 ppm
Ga: ≤0.02 ppm
In: ≤0.02 ppm
K: ≤0.5 ppm
Li: ≤0.02 ppm
Mg: ≤0.1 ppm
Mn: ≤0.05 ppm
Mo: ≤0.05 ppm
Na: ≤1 ppm
Ni: ≤0.05 ppm
Pb: ≤0.05 ppm
Pt: ≤0.1 ppm
Sn: ≤0.1 ppm
Sr: ≤0.2 ppm
Ti: ≤0.1 ppm
Tl: ≤0.05 ppm
Zn: ≤0.1 ppm

SMILES string

[NH4+].[OH-]

suitability

complies for appearance of solution

storage temp.

2-8°C

InChI

1S/H3N.H2O/h1H3;1H2

InChI key

VHUUQVKOLVNVRT-UHFFFAOYSA-N

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Packaging

In PE-bottles; also available PE-bottles black (Material no. ending with PEBL; Glass-bottles (Material no. ending with *-GL), PE canister (Material no. ending with *-H)

Other Notes

The article number 30501-4X2.5L will be discontinued. Please order the single bottle 30501-2.5L which is physically identical with the same exact specifications.
The article number 30501-4X2.5L-M will be discontinued. Please order the single bottle 30501-2.5L-M which is physically identical with the same exact specifications.
The article number 30501-6X1L will be discontinued. Please order the single bottle 30501-1L which is physically identical with the same exact specifications.
The article number 30501-6X1L-M will be discontinued. Please order the single bottle 30501-1L-M which is physically identical with the same exact specifications.

Signal Word

Danger

Hazard Statements

Hazard Classifications

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

Target Organs

Respiratory system

Storage Class Code

8B - Non-combustible, corrosive hazardous materials

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

Andrea Krapp et al.
Cell reports, 26(4), 1044-1058 (2019-01-24)
Meiotic progression in S. pombe is regulated by stage-specific gene expression and translation, changes in RNA stability, expression of anti-sense transcripts, and targeted proteolysis of regulatory proteins. We have used SILAC labeling to examine the relative levels of proteins in diploid
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
Synchrotron photoemission spectroscopy study of ammonium hydroxide etching to prepare well-ordered GaAs (100) surfaces.
Lebedev MV, et al.
Applied Surface Science, 229(1), 226-232 (2004)
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
Silver electrocrystallization on vitreous carbon from ammonium hydroxide solutions.
Palomar-Pardave M, et al.
Journal of the Electrochemical Society, 143(5), 1551-1558 (1996)

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