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221228

Sigma-Aldrich

Ammonium hydroxide solution

ACS reagent, 28.0-30.0% NH3 basis

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

grade

ACS reagent

Quality Level

form

liquid

autoignition temp.

1204 °F

expl. lim.

27 %

concentration

28.0-30.0% NH3

impurities

MnO4- reducers, passes test
≤0.002% CO2

ign. residue

≤0.002%

pH

11.7 (20 °C)

density

0.9 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤0.5 ppm
nitrate (NO3-): ≤2 ppm
phosphate (PO43-): ≤2 ppm
sulfate (SO42-): ≤2 ppm

cation traces

Fe: ≤0.2 ppm
heavy metals: ≤0.5 ppm (by ICP)

storage temp.

2-8°C

SMILES string

[NH4+].[OH-]

InChI

1S/H3N.H2O/h1H3;1H2

InChI key

VHUUQVKOLVNVRT-UHFFFAOYSA-N

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1 of 4

This Item
3388181709309859
vibrant-m

221228

Ammonium hydroxide solution

-
vibrant-m

338818

Ammonium hydroxide solution

-
vibrant-m

17093

Ammonium hydroxide solution

-
vibrant-m

09859

Ammonium hydroxide solution

Premium Grade
concentration

28.0-30.0% NH3

concentration

28% NH3 in H2O

concentration

≥25% NH3 in H2O

concentration

~1 M NH3 in H2O (T)

Quality Level

200

Quality Level

100

Quality Level

100

Quality Level

200

density

0.9 g/mL at 25 °C (lit.)

density

0.9 g/mL at 25 °C (lit.)

density

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

density

0.9 g/mL at 25 °C (lit.)

pH

11.7 (20 °C)

pH

11.7 (20 °C)

pH

11.7 (20 °C)

pH

-

cation traces

Fe: ≤0.2 ppm, heavy metals: ≤0.5 ppm (by ICP)

cation traces

-

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

cation traces

Al: ≤1 mg/kg, As: ≤0.1 mg/kg, Ba: ≤1 mg/kg, Bi: ≤1 mg/kg, Ca: ≤5 mg/kg, Cd: ≤1 mg/kg, Co: ≤1 mg/kg, Cr: ≤1 mg/kg, Cu: ≤1 mg/kg, Fe: ≤1 mg/kg, K: ≤20 mg/kg, Li: ≤1 mg/kg, Mg: ≤1 mg/kg, Mn: ≤1 mg/kg, Mo: ≤1 mg/kg, Na: ≤20 mg/kg, Ni: ≤1 mg/kg, Pb: ≤1 mg/kg, Sr: ≤1 mg/kg, Zn: ≤1 mg/kg

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.

Application

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.

Other Notes

ACS specifications same for product 320145

Signal Word

Danger

Hazard Statements

Hazard Classifications

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

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

PDSCL

Deleterious substance

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

221228-25ML-A:4.548173117935E12
221228-500ML-A:4.548173117959E12
221228-10L-A:4.548174011263E12
221228-500ML-PCA:4.548173985046E12
221228-2.5L-A:4.548173958507E12
221228-2L-A:4.548173117942E12
221228-1L-A:4.548173117928E12
221228-385LB-A:4.548173251028E12
221228-1L-PCA-PW:4.548173372389E12
221228-100ML-A:4.548173297002E12
221228-1L-PCA:4.548173372396E12


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An efficient and fast procedure for the Hantzsch dihydropyridine synthesis under microwave conditions.
Oehberg L and Westman J
Synlett, 2001(08), 1296-1298 (2001)
Christie Ying Kei Lung et al.
Dental materials journal, 32(1), 165-172 (2013-02-02)
The effect of silica-coating by sol-gel process on the bond strength of resin composite to zirconia was evaluated and compared against the sandblasting method. Four groups of zirconia samples were silica-coated by sol-gel process under varied reagent ratios of ethanol
Isolation and characterization of mesenchymal stem cells.
Odabas SA, et al.
Bone Marrow and Stem Cell Transplantation., 47-63 (2014)
Synthesis and characterization of biocompatible Fe3O4 nanoparticles.
Sun J, et al.
Journal of Biomedical Materials Research Part A, 80(2), 333-341 (2007)
Ramakrishna A
Goyal?s IIT foundation course chemistry: For Class-9, 160-160 (2014)

Articles

Acid and base chart lists the strength of acids and bases (strongest to weakest) in order. Simple to use laboratory reference chart for scientists, researchers and lab technicians.

Protocols

In the present study we demonstrate compliance of silica gel 60 F254 HPTLC plates with USP requirements, and how HPTLC plates are suitable for the Sildenafil citrate-Limit of Imidazole test.

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