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
S9640
Sodium tetraborate decahydrate
ACS reagent, ≥99.5%
Synonym(s):
Borax decahydrate, Sodium borate decahydrate
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About This Item
Recommended Products
grade
ACS reagent
Quality Level
Agency
suitable for SM 4500 - NH3
vapor pressure
0.213 hPa ( 20 °C)
Assay
≥99.5%
form
powder or crystals
impurities
≤0.005% Insoluble matter
pH
9.15-9.20 (25 °C, 0.01 M in solution)
density
1.73 g/mL at 25 °C (lit.)
anion traces
chloride (Cl-): ≤0.001%
phosphate (PO43-): ≤0.001%
sulfate (SO42-): ≤0.005%
cation traces
Ca: ≤0.005%
Fe: ≤5 ppm
heavy metals (as Pb): ≤0.001%
SMILES string
O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[O-]B1Ob2ob([O-])ob(O1)o2
InChI
1S/B4O7.2Na.10H2O/c5-1-7-3-9-2(6)10-4(8-1)11-3;;;;;;;;;;;;/h;;;10*1H2/q-2;2*+1;;;;;;;;;;
InChI key
CDMADVZSLOHIFP-UHFFFAOYSA-N
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General description
Application
- Regioselective thiolysis of 1,2-epoxides by using thiols to synthesize β-hydroxy sulfides.
- Hetero-Michael addition of thiols with electron-deficient olefins to synthesize corresponding β-adducts.
- Solvent-free Biginelli reaction to synthesize 3,4-dihydropyrimidin-2(1H)-ones.
Legal Information
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Eye Irrit. 2 - Repr. 1B
Storage Class Code
6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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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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