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
P0662
Potassium phosphate monobasic
ACS reagent, ≥99.0%
Synonym(s):
Potassium dihydrogen phosphate, prim.-Potassium phosphate
Select a Size
| Pack Size | SKU | Availability | Price |
|---|---|---|---|
| 25 g | Check Cart for Availability | $59.80 | |
| 500 g | Check Cart for Availability | $99.50 | |
| 1 kg | Check Cart for Availability | $173.00 | |
| 2.5 kg | Check Cart for Availability | $292.00 | |
| 6 x 500 g | Check Cart for Availability | $495.00 | |
| 12 kg | Check Cart for Availability | $725.00 | |
| 4 x 2.5 kg | Check Cart for Availability | $1,370.00 |
About This Item
$59.80
grade
ACS reagent
Quality Level
agency
suitable for EPA 300, suitable for SM 5210
assay
≥99.0%
form
powder or crystals
technique(s)
tissue culture: suitable
impurities
≤0.01% Insoluble matter
loss
≤0.2% loss on drying, 105°C
pH
4.1-4.5 (25 °C, 5%)
pKa (25 °C)
(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
bp
>450 °C
mp
252.6 °C (lit.)
solubility
water: soluble (208 g/l at 20 °C (68 °F))
density
2.338 g/mL at 25 °C (lit.)
anion traces
chloride (Cl-): ≤0.001%, sulfate (SO42-): ≤0.003%
cation traces
Fe: ≤0.002%, Na: ≤0.005%, heavy metals: ≤0.001% (by ICP)
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
General description
Application
Other Notes
Legal Information
1 of 1
This Item | |||
|---|---|---|---|
| form powder or crystals | form powder or crystals | form crystalline | form crystalline |
| assay ≥99.0% | assay ≥99% | assay 99.5-100.5% | assay 98-100.5% dry basis |
| solubility water: soluble (208 g/l at 20 °C (68 °F)) | solubility water: soluble (208 g/l at 20 °C (68 °F)) | solubility water: 0.5 g/10 mL, clear, colorless to light yellow | solubility water: 208 g/L at 20 °C |
| Quality Level 200 | Quality Level 200 | Quality Level 100 | Quality Level 200 |
| grade ACS reagent | grade ACS reagent, anhydrous | grade ACS reagent, anhydrous, puriss. p.a. | grade anhydrous |
| cation traces Fe: ≤0.002%, heavy metals: ≤0.001% (by ICP), Na: ≤0.005% | cation traces Fe: ≤0.002%, Na: ≤0.005%, heavy metals: ≤0.001% (by ICP) | cation traces As: ≤0.5 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤15 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Na: ≤50 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg, heavy metals: ≤0.001% (by ICP) | cation traces - |
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Storage Class
13 - Non Combustible Solids
flash_point_f
Not applicable
flash_point_c
Not applicable
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This page is intended to make it easier to find the consumables you need based on the analytical method you’re using. Methods included on this page come from the EPA, Standard Methods and ASTM.
Global Trade Item Number
| SKU | GTIN |
|---|---|
| P0662-12KG | 04061833642030 |
| P0662-25G | 04061835349449 |
| P0662-500G | 04061835349456 |
| P0662-4X2.5KG | 04061834352983 |
| P0662-6X500G | 04061832568195 |
| P0662-1KG | 04061835349418 |
| P0662-2.5KG | 04061835349425 |
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How can I determine the shelf life / expiration / retest date of this product?
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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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