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
P9541
Potassium chloride
Molecular Biology, ≥99.0%
Synonym(s):
KCl
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$61.60
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$379.00
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Estimated to ship onMarch 16, 2026Details
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Product Name
Potassium chloride, Molecular Biology, ≥99.0%
InChI key
WCUXLLCKKVVCTQ-UHFFFAOYSA-M
InChI
1S/ClH.K/h1H;/q;+1/p-1
SMILES string
[Cl-].[K+]
grade
Molecular Biology
assay
≥99.0%
form
powder
mp
770 °C (lit.)
solubility
water: soluble (355 g/l at 25 °C (77 °F))
density
1.98 g/mL at 25 °C (lit.)
cation traces
Fe: ≤3 ppm
heavy metals (as Pb): ≤5 ppm
foreign activity
DNAse (exonuclease), NICKase (endonuclease), RNAse, and protease, none detected
Quality Level
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Related Categories
1 of 4
This Item | 409316 | 529552 | 60130 |
|---|---|---|---|
| form powder | form solid | form crystalline solid | form powder or crystals |
| assay ≥99.0% | assay 99.999% trace metals basis | assay ≥99% (silver nitrate titration) | assay ≥99.5% (AT) |
| Quality Level 200 | Quality Level 100 | Quality Level 100 | Quality Level 200 |
| grade for molecular biology | grade - | grade Molecular Biology | grade - |
| mp 770 °C (lit.) | mp 770 °C (lit.) | mp 770 °C (lit.) | mp 770 °C (lit.) |
| cation traces Fe: ≤3 ppm, heavy metals (as Pb): ≤5 ppm | cation traces - | cation traces Fe: ≤0.0003%, Mg: ≤0.002%, heavy metals (as Pb): ≤0.0005% | cation traces Ca: ≤50 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤2 mg/kg, Mg: ≤10 mg/kg, Mn: ≤5 mg/kg, Na: ≤200 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg |
Application
- as a component of Danieau medium and also used in the preparation of phosphate buffer saline[1]
- in the preparation of electrolyte solution for electrochemical impedance spectroscopy and cyclic voltammetry measurements[2]
- as a component of HEPES (4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid)-buffered Tyrode′s solution[3]
General description
Storage Class
13 - Non 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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Protocols
TE Buffer; Elution Buffer; 10x Ligation Buffer; 0.5 M PIPES Buffer; Inoue Transformation Buffer
Related Content
Product Information Sheet
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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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