The product's concentration is expressed as % weight/weight.
221228
Ammonium hydroxide solution
Ammonium hydroxide solution
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ACS reagent, 28.0-30.0% NH3 basis
Synonym(s):
Ammonia aqueous, Ammonia water
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25 ML
$31.11
100 ML
$38.60
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$53.90
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$60.80
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$73.60
1 L
$95.90
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$114.00
2.5 L
$142.00
6 X 500 ML
$181.80
6 X 500 ML
$226.80
12 X 100 ML
$383.00
6 X 2.5 L
$404.00
6 X 2.5 L
$380.10
$31.11
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25 ML
$31.11
100 ML
$38.60
500 ML
$53.90
500 ML
$60.80
1 L
$73.60
1 L
$95.90
2.5 L
$114.00
2.5 L
$142.00
6 X 500 ML
$181.80
6 X 500 ML
$226.80
12 X 100 ML
$383.00
6 X 2.5 L
$404.00
6 X 2.5 L
$380.10
About This Item
Linear Formula:
NH4OH
CAS Number:
Molecular Weight:
35.05
Beilstein/REAXYS Number:
3587154
MDL number:
UNSPSC Code:
12352106
eCl@ss:
38060103
PubChem Substance ID:
NACRES:
NA.21
$31.11
List Price$36.60Save 15%Web-Only Promotion
Available to ship onMay 20, 2025Details
Request a Bulk Order
Recommended Products
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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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.[1]
Application
Ammonium hydroxide solution may be used:
Packaging
Other Notes
ACS specifications same for product 320145
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_germany
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
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