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
P5754
Potassium tetraborate tetrahydrate
ReagentPlus®, ≥99.5%
Sinónimos:
Potassium biborate
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| A ustedes/SKU | Disponibilidad | Precio |
|---|---|---|
500 g | Comprobar disponibilidad del carrito | MXP 1,429.00 |
2.5 kg | Comprobar disponibilidad del carrito | MXP 4,896.00 |
Acerca de este artículo
Quality Segment
product line
ReagentPlus®
assay
≥99.5%
form
powder
reaction suitability
core: potassium
anion traces
chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤50 mg/kg
cation traces
Cd: ≤50 mg/kg, Co: ≤50 mg/kg, Cu: ≤50 mg/kg, Fe: ≤50 mg/kg, Na: ≤5000 mg/kg, Ni: ≤50 mg/kg, Pb: ≤50 mg/kg, Zn: ≤50 mg/kg, Ca: ≤50 mg/kg
SMILES string
O.O.O.O.[K+].[K+].[O-]B([O-])OB1OB(OB=O)O1
InChI
1S/B4O7.2K.4H2O/c5-1-8-3-10-4(11-3)9-2(6)7;;;;;;/h;;;4*1H2/q-2;2*+1;;;;
InChI key
FZICZLCGJZRAHS-UHFFFAOYSA-N
General description
Application
- As an electrolyte for electrochemical water splitting reaction. The addition of K2B4O7 · 4H2O enhances the oxygen evolution activity of the catalyst.
- To synthesize carbon foams with hierarchical pores, for supercapacitors. K2B4O7 · 4H2O helps to tune the pore structure of carbon foams.
- To prepare green formulation for the removal of pyrite(FeS2) scales from oil and gas tubings.
Legal Information
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Este artículo | |||
|---|---|---|---|
| form powder | form solid | form powder | form powder and chunks |
| assay ≥99.5% | assay 97% | assay ≥98% | assay 99.95% trace metals basis |
| Quality Level 200 | Quality Level 100 | Quality Level 200 | Quality Level 200 |
| cation traces Ca: ≤50 mg/kg, Co: ≤50 mg/kg, Fe: ≤50 mg/kg, Ni: ≤50 mg/kg, Zn: ≤50 mg/kg, Cd: ≤50 mg/kg, Na: ≤5000 mg/kg, Pb: ≤50 mg/kg, Cu: ≤50 mg/kg | cation traces - | cation traces Fe: ≤0.001%, Na: ≤0.05%, heavy metals: ≤5 ppm (by ICP-OES) | cation traces - |
| anion traces chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤50 mg/kg | anion traces - | anion traces chloride (Cl-): ≤0.003%, sulfate (SO42-): ≤0.005% | anion traces - |
| product line ReagentPlus® | product line - | product line - | product line - |
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signalword
Warning
hcodes
Hazard Classifications
Repr. 2
Clase de almacenamiento
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Gloves
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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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What is the expiration/shelf life of this reagent?
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This product is not assigned an expiration date or recommended retest date. Products with no expiration date or recommended retest date should be routinely inspected by customers to ensure they perform as expected. These products are also subject to a one year warranty from the date of shipment. For more information you may access the "Product Dating Information" document under "ADDITIONAL USEFUL DOCUMENTS ABOUT OUR PRODUCTS" at the bottom of the Quality Services page with this link: https://www.sigmaaldrich.com/life-science/quality-and-regulatory-management/quality-services.
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