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.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
338818
Ammonium hydroxide solution
28% NH3 in H2O, ≥99.99% trace metals basis
Synonym(s):
Ammonia aqueous, Ammonia water
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
5 mL | Check Cart for Availability | $49.50 |
100 mL | Check Cart for Availability | $95.80 |
1 L | Check Cart for Availability | $466.00 |
About This Item
Quality Segment
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
storage temp.
2-8°C
SMILES string
[NH4+].[OH-]
InChI
1S/H3N.H2O/h1H3;1H2
InChI key
VHUUQVKOLVNVRT-UHFFFAOYSA-N
General description
Application
- 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.
1 of 1
This Item | |||
|---|---|---|---|
| concentration 28% NH3 in H2O | concentration ≥25% NH3 in H2O | concentration 30-33% NH3 in H2O | concentration ~25% NH3 |
| assay ≥99.99% trace metals basis | assay - | assay - | assay - |
| form liquid | form liquid | form liquid | form liquid |
| storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-8°C |
| solubility water: soluble | solubility - | solubility - | solubility - |
| pH 11.7 (20 °C) | pH 11.7 (20 °C) | pH 11.7 (20 °C) | pH 11.7 (20 °C) |
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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
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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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Is the concentration of item 338818-1L expressed as % w/w?
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Yes.
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