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
230391
Magnesium sulfate heptahydrate
ACS reagent, ≥98%
Synonym(s):
Epsom salts
Select a Size
| Pack Size | SKU | Availability | Price |
|---|---|---|---|
| 25 g | Available to ship TODAYfromMILWAUKEE | $60.70 | |
| 500 g | Available to ship TODAYfromMILWAUKEE | $131.00 | |
| 1 kg | Available to ship TODAYfromMILWAUKEE | $171.00 | |
| 2.5 kg | Available to ship TODAYfromMILWAUKEE | $350.00 | |
| 5 kg | Available to ship TODAYfromMILWAUKEE | $532.00 | |
| 12 kg | Available to ship TODAYfromMILWAUKEE | $735.00 | |
| 25 kg | Usually ships in 5 business days. (Orders outside of US, please allow an additional 1-2 weeks for delivery) | $1,430.00 |
About This Item
$60.70
Available to ship TODAYDetails
grade
ACS reagent
Quality Level
vapor density
<0.01 (vs air)
vapor pressure
<0.1 mmHg ( 20 °C)
assay
≥98%, 98.0-102.0% (ACS specification)
form
crystals
impurities
≤0.005% insolubles
pH
5.0-8.2 (25 °C, 5%)
anion traces
chloride (Cl-): ≤5 ppm, nitrate (NO3-): ≤0.002%
cation traces
Ca: ≤0.02%, Fe: ≤5 ppm, K: ≤0.005%, Mn: ≤5 ppm, NH4+: ≤0.002%, Na: ≤0.005%, Sr: ≤0.005%, heavy metals: ≤5 ppm (by ICP-OES)
SMILES string
O.O.O.O.O.O.O.[Mg++].[O-]S([O-])(=O)=O
InChI
1S/Mg.H2O4S.7H2O/c;1-5(2,3)4;;;;;;;/h;(H2,1,2,3,4);7*1H2/q+2;;;;;;;;/p-2
InChI key
WRUGWIBCXHJTDG-UHFFFAOYSA-L
General description
Application
- Phenazine and quinoxaline derivatives via a condensation reaction between o-phenylenediamines and 1,2-dicarbonyl compounds.
- Imidazole derivatives via one-pot multicomponent condensation reaction of aromatic aldehydes, benzil, aliphatic, and aromatic primary amines.
NaBH4 supported on MgSO4 7H2O can be used as an efficient catalyst for the reduction of α, β-unsaturated carbonyl compounds to corresponding alcohols.
1 of 1
This Item | |||
|---|---|---|---|
| form crystals | form powder or crystals | form powder or crystals | form - |
| assay ≥98%, 98.0-102.0% (ACS specification) | assay 99.5-100.5% (calc. to the dried substance) | assay ≥98% (EDTA titration), ≥99.9% trace metals basis | assay ≥99.0% |
| Quality Level 200 | Quality Level 200 | Quality Level 100 | Quality Level 200 |
| grade ACS reagent | grade - | grade - | grade Molecular Biology |
| cation traces Ca: ≤0.02%, K: ≤0.005%, NH4+: ≤0.002%, Sr: ≤0.005%, Fe: ≤5 ppm, Na: ≤0.005%, Mn: ≤5 ppm, heavy metals: ≤5 ppm (by ICP-OES) | cation traces As: ≤2 ppm, Fe: ≤20 ppm, Pb: ≤4 ppm, Se: ≤30 ppm | cation traces Al: ≤10 ppm, Ca: ≤10 ppm, Cd: ≤10 ppm, Cr: ≤10 ppm, Fe: ≤10 ppm, K: ≤10 ppm, Na: ≤30 ppm, Ni: ≤10 ppm, Pb: ≤10 ppm, Si: ≤10 ppm, Zn: ≤10 ppm | cation traces K: ≤50 ppm, Na: ≤50 ppm, heavy metals (as Pb): ≤5 ppm |
| vapor pressure <0.1 mmHg ( 20 °C) | vapor pressure <0.1 mmHg ( 20 °C) | vapor pressure <0.1 mmHg ( 20 °C) | vapor pressure <0.1 mmHg ( 20 °C) |
Still not finding the right product?
Explore all of our products under Magnesium sulfate heptahydrate
Storage Class
13 - Non Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Choose from one of the most recent versions:
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
Global Trade Item Number
| SKU | GTIN |
|---|---|
| 230391-1KG | 04061835346844 |
| 230391-5KG | 04061838782632 |
| 230391-12KG | 04061833482049 |
| 230391-2.5KG | 04061838782625 |
| 230391-25G | 04061835346851 |
| 230391-25KG | 04061833636626 |
| 230391-500G | 04061835346868 |
-
How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
-
-
How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
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
Helpful?
-