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
A4915
Ammonium sulfate
ACS reagent, ≥99.0%
Synonym(s):
Mascagnite
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Available to ship onDecember 09, 2025Details
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grade
ACS reagent
Quality Level
assay
≥99.0%
form
powder or crystals
impurities
≤0.005% Insoluble matter
ign. residue
≤0.005%
pH
5.0-6.0 (25 °C, 5%)
mp
>280 °C (dec.) (lit.)
solubility
water: soluble 132 g/L at 20 °C
density
1.77 g/mL at 25 °C (lit.)
anion traces
chloride (Cl-): ≤5 ppm
nitrate (NO3-): ≤0.001%
phosphate (PO43-): ≤5 ppm
cation traces
Fe: ≤5 ppm
heavy metals: ≤5 ppm (by ICP-OES)
storage temp.
room temp
SMILES string
N.N.OS(O)(=O)=O
InChI
1S/2H3N.H2O4S/c;;1-5(2,3)4/h2*1H3;(H2,1,2,3,4)
Inchi Key
BFNBIHQBYMNNAN-UHFFFAOYSA-N
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Related Categories
1 of 4
This Item | A5132 | 31119 | 901874 |
|---|---|---|---|
| form powder or crystals | form powder or crystals | form crystals | form powder |
| solubility water: soluble 132 g/L at 20 °C | solubility water: soluble 132 g/L at 20 °C | solubility - | solubility water: soluble 132 g/L at 20 °C |
| assay ≥99.0% | assay ≥99.0% | assay ≥99% | assay ≥99.0% |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| grade ACS reagent | grade - | grade ACS reagent, puriss. p.a. | grade anhydrous |
| mp >280 °C (dec.) (lit.) | mp >280 °C (dec.) (lit.) | mp >280 °C (dec.) (lit.) | mp >280 °C (dec.) (lit.) |
General description
Application
Storage Class
13 - Non Combustible Solids
wgk_germany
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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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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