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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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
1.06580
di-Sodium hydrogen phosphate dihydrate
for analysis EMSURE®
Synonym(s):
di-Sodium hydrogen phosphate dihydrate, Sodium monohydrogen phosphate, Sodium phosphate dibasic, sec-Sodium phosphate, Disodium hydrogen phosphate dihydrate, Disodium phosphate, Sodium phosphate dibasic dihydrate
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About This Item
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grade
Laboratory Reagent
Quality Level
product line
EMSURE®
Assay
≥99.5% (acidimetric)
form
solid
potency
>2000 mg/kg LD50, oral (Rat)
pH
9.0-9.2 (20 °C, 50 g/L in H2O)
mp
92.5 °C (Elimination of water of crystallisation)
solubility
93 g/L
density
2.1 g/cm3 at 20 °C
bulk density
850‑1000 kg/m3
anion traces
chloride (Cl-): ≤0.001%
sulfate (SO42-): ≤0.005%
cation traces
Cu: ≤0.0003%
Fe: ≤0.001%
K: ≤0.005%
N: ≤0.001%
Pb: ≤0.001%
heavy metals (as Pb): ≤0.001%
storage temp.
2-30°C
SMILES string
O.O.[Na+].[Na+].OP([O-])([O-])=O
InChI
1S/2Na.H3O4P.2H2O/c;;1-5(2,3)4;;/h;;(H3,1,2,3,4);2*1H2/q2*+1;;;/p-2
InChI key
KDQPSPMLNJTZAL-UHFFFAOYSA-L
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1 of 4
This Item | 1.28237 | 1.37036 | 71662 |
|---|---|---|---|
| form solid | form crystalline | form solid | form solid |
| assay ≥99.5% (acidimetric) | assay - | assay - | assay 98.0-101.0% (dried substance) |
| solubility 93 g/L | solubility - | solubility 93 g/L | solubility - |
| Quality Level 300 | Quality Level 500 | Quality Level 500 | Quality Level 200 |
| grade Laboratory Reagent | grade - | grade - | grade - |
| mp 92.5 °C (Elimination of water of crystallisation) | mp - | mp 92.5 °C (Elimination of water of crystallisation) | mp - |
Application
Analysis Note
Identity: passes test
pH-value (5 %; water): 9.0 - 9.2
Chloride (Cl): ≤ 0.001 %
Sulfate (SO₄): ≤ 0.005 %
Total nitrogen (N): ≤ 0.001 %
Heavy metals (as Pb): ≤ 0.001 %
Cu (Copper): ≤ 0.0003 %
Fe (Iron): ≤ 0.001 %
K (Potassium): ≤ 0.005 %
Pb (Lead): ≤ 0.001 %
Other Notes
Legal Information
Storage Class Code
13 - Non 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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