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
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
1 kg | Check Cart for Availability | $286.00 |
25 kg | Check Cart for Availability | $5,720.00 |
About This Item
grade
ACS reagent
Quality Segment
agency
reag. ISO, reag. Ph. Eur.
product line
EMSURE®
assay
≥99.0% dry basis (alkalimetric), 98.0-100.5% (alkalimetric)
form
solid
potency
>4640 mg/kg LD50, skin (Rabbit)
impurities
≤0.01% Insoluble matter
loss
≤ 0.2% loss on drying, 130 °C
pH
4.2-4.6 (20 °C, 20 g/L in H2O)
mp
252.6 °C (lit.)
solubility
water: soluble
density
2.338 g/mL at 25 °C (lit.)
bulk density
1200 kg/m3
anion traces
chloride (Cl-): ≤0.0005%, sulfate (SO42-): ≤0.003%
cation traces
As: ≤0.0002%, Fe: ≤0.0010%, N: ≤0.001%, Na: ≤0.005%, heavy metals: ≤0.001%, heavy metals (as Pb): ≤0.0010%
storage temp.
2-30°C
SMILES string
[K+].OP(O)([O-])=O
InChI
1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1
InChI key
GNSKLFRGEWLPPA-UHFFFAOYSA-M
Application
- β-lactoglobulin stabilized nanemulsions--Formulation and process factors affecting droplet size and nanoemulsion stability.: This research explores the stabilization mechanisms of β-lactoglobulin in nanemulsions, with implications for pharmaceutical and food sciences, potentially utilizing substances like potassium phosphate monobasic for stability and pH control (Ali et al., 2016).
Analysis Note
Assay (alkalimetric, calculated on dried substance): 98.0 - 100.5 %
Assay (alkalimetric; dried substance): ≥ 99.5 %
Identity: passes test
Appearance of solution: passes test
Insoluble matter: ≤ 0.01 %
pH-value (5 %; water, 25 °C): 4.2 - 4.5
Chloride (Cl): ≤ 0.0005 %
Sulfate (SO₄): ≤ 0.003 %
Total nitrogen (N): ≤ 0.001 %
Heavy metals (as Pb): ≤ 0.0010 %
Heavy metals (ACS): ≤ 0.001 %
As (Arsenic): ≤ 0.0002 %
Fe (Iron): ≤ 0.0010 %
Na (Sodium): ≤ 0.005 %
Reducing substances: passes test
Loss on drying (130 °C): ≤ 0.2 %
Corresponds to ACS,ISO,Reag. Ph Eur
Legal Information
1 of 1
This Item | |||
|---|---|---|---|
| description for analysis (<= 0.005% Na) EMSURE® ACS,ISO,Reag. Ph Eur | description for analysis EMSURE® ISO | description meets analytical specification of Ph. Eur., NF, anhydrous, 98-100.5% (calc. to the dried substance) | description Meets ACS Specifications, Meets Reagent Specifications for testing USP/NF monographs GR ACS |
| form solid | form solid | form crystalline | form crystals |
| assay ≥99.0% dry basis (alkalimetric), 98.0-100.5% (alkalimetric) | assay ≥99.5% dry basis (alkalimetric), 99.5-100.5% (alkalimetric) | assay 98-100.5% (calc. to the dried substance) | assay ≥99% (acidimetric) |
| solubility water: soluble | solubility 208 g/L | solubility H2O: soluble 4.5 parts, alcohol: insoluble | solubility soluble 208 g/L |
| Quality Level 300 | Quality Level 300 | Quality Level 200 | Quality Level 200 |
| grade ACS reagent | grade reagent grade | grade anhydrous | grade ACS reagent |
| density 2.338 g/mL at 25 °C (lit.) | density 2.338 g/mL at 25 °C (lit.) | density 2.338 g/mL at 25 °C (lit.) | density 2.338 g/mL at 25 °C (lit.) |
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Storage Class
13 - Non Combustible Solids
wgk
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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