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
60218
Potassium phosphate monobasic
BioUltra, Molecular Biology, anhydrous, ≥99.5% (T)
Synonym(s):
Potassium dihydrogen phosphate, prim.-Potassium phosphate
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grade
Molecular Biology
product line
BioUltra
Assay
≥99.5% (T)
form
powder or crystals
impurities
DNases, none detected
RNases, none detected
insoluble matter, passes filter test
phosphatases, none detected
proteases, none detected
≤0.001% total nitrogen (N)
pH
4.0-4.5 (25 °C, 1 M in H2O)
pKa (25 °C)
(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
mp
252.6 °C (lit.)
solubility
H2O: 1 M at 20 °C, clear, colorless
density
2.338 g/mL at 25 °C (lit.)
anion traces
chloride (Cl-): ≤5 mg/kg
sulfate (SO42-): ≤30 mg/kg
cation traces
Al: ≤5 mg/kg
As: ≤0.1 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
Na: ≤50 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg
λ
1 M in H2O
UV absorption
λ: 260 nm Amax: 0.050
λ: 280 nm Amax: 0.045
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
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This Item | 60229 | RDD037 | 04243 |
|---|---|---|---|
| grade for molecular biology | grade anhydrous | grade - | grade anhydrous |
| assay ≥99.5% (T) | assay 98-100.5% dry basis | assay ≥99.0% | assay 98-100.5% (calc. to the dried substance) |
| product line BioUltra | product line - | product line Redi-Dri™ | product line - |
| Quality Level 200 | Quality Level 200 | Quality Level 100 | Quality Level 200 |
| form powder or crystals | form crystalline | form - | form crystalline |
| solubility H2O: 1 M at 20 °C, clear, colorless | solubility water: 208 g/L at 20 °C | solubility - | solubility H2O: soluble 4.5 parts, alcohol: insoluble |
Application
Other Notes
Storage Class Code
13 - Non Combustible Solids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
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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/449/386/product-dating-information-mk.pdfHelpful?
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