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
P9791
Potassium phosphate monobasic
Molecular Biology, ≥98.0%
Synonym(s):
Potassium dihydrogen phosphate, prim.-Potassium phosphate
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€ 74,60
€ 158,00
€ 263,00
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Product Name
Potassium phosphate monobasic, Molecular Biology, ≥98.0%
InChI key
GNSKLFRGEWLPPA-UHFFFAOYSA-M
InChI
1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1
SMILES string
[K+].OP(O)([O-])=O
grade
Molecular Biology
assay
≥98.0%
form
powder
pKa (25 °C)
(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
mp
252.6 °C (lit.)
solubility
H2O: 100 mg/mL
density
2.338 g/mL at 25 °C (lit.)
anion traces
chloride (Cl-): ≤10 ppm
cation traces
Fe: ≤20 ppm
heavy metals (as Pb): ≤10 ppm
application(s)
diagnostic assay manufacturing
foreign activity
DNase, Exonuclease; NICKase, Endonuclease; RNase and protease, none detected
Quality Level
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Related Categories
1 of 4
This Item | P5655 | 60218 | 92214 |
|---|---|---|---|
| assay ≥98.0% | assay ≥99.0% | assay ≥99.5% (T) | assay - |
| grade for molecular biology | grade - | grade for molecular biology | grade certified reference material, TraceCERT® |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 100, 300 |
| application(s) diagnostic assay manufacturing | application(s) diagnostic assay manufacturing | application(s) - | application(s) cleaning products |
| form powder | form powder | form powder or crystals | form - |
| solubility H2O: 100 mg/mL | solubility water: 100 mg/mL, clear, colorless | solubility H2O: 1 M at 20 °C, clear, colorless | solubility - |
Storage Class
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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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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