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
AX1385
Ammonium sulfate
Meets ACS Specifications, Meets Reagent Specifications for testing USP/NF monographs GR ACS
Synonym(s):
Mascagnite
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Product Name
Ammonium sulfate, Meets ACS Specifications, Meets Reagent Specifications for testing USP/NF monographs GR ACS
InChI
1S/2H3N.H2O4S/c;;1-5(2,3)4/h2*1H3;(H2,1,2,3,4)
SMILES string
N.N.OS(O)(=O)=O
InChI key
BFNBIHQBYMNNAN-UHFFFAOYSA-N
grade
ACS reagent
agency
meets USP/NF
vapor pressure
<1 Pa ( 25 °C)
assay
≥99.0%
form
crystals
impurities
≤0.005% Insoluble matter
ign. residue
≤0.005%
color
white
pH
5 (100 g/L in H2O)
mp
>280 °C (dec.) (lit.)
solubility
754-764 g/L
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
shipped in
ambient
storage temp.
room temp
Quality Level
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This Item | A4915 | 31119 | 1.01217 |
|---|---|---|---|
| form crystals | form powder or crystals | form crystals | form solid |
| solubility 754-764 g/L | solubility water: soluble 132 g/L at 20 °C | solubility - | solubility 754-764 g/L |
| assay ≥99.0% | assay ≥99.0% | assay ≥99% | assay ≥99.5% (alkalimetric) |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 300 |
| impurities ≤0.005% Insoluble matter | impurities ≤0.005% Insoluble matter | impurities ≤0.005% in water insoluble matters, ≤5 ppm heavy metals (by ICP-OES) | impurities ≤0.001% Insoluble matter |
| anion traces chloride (Cl-): ≤5 ppm, phosphate (PO43-): ≤5 ppm, nitrate (NO3-): ≤0.001% | anion traces chloride (Cl-): ≤5 ppm, nitrate (NO3-): ≤0.001%, phosphate (PO43-): ≤5 ppm | anion traces chloride (Cl-): ≤3 mg/kg, nitrate (NO3-): ≤10 mg/kg, phosphate (PO43-): ≤5 mg/kg | anion traces chloride (Cl-): ≤0.0003%, nitrate (NO3-): ≤0.001%, phosphate (PO43-): ≤0.0005% |
Analysis Note
Application
Storage Class
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
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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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