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
1.06498
Hidróxido de sodio
pellets for analysis EMSURE®
Sinónimos:
«Sosa cáustica»
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Quality Segment
agency
suitable for SM 4500 - NH3
vapor density
>1 (vs air)
vapor pressure
<18 mmHg ( 20 °C), 3 mmHg ( 37 °C)
product line
EMSURE®
assay
≥99% NaOH basis (acidimetric)
form
pellets
impurities
≤0.0003% Total nitrogen (N)
pH
>14 (20 °C, 100 g/L in H2O)
mp
318 °C (lit.)
solubility
1090 g/L
density
2.13 g/cm3 at 20 °C
anion traces
carbonate (as Na2CO3): ≤1%, chloride (Cl-): ≤0.012%, phosphate (PO43-): ≤0.0005%, silicate (as SiO2): ≤0.001%, sulfate (SO42-): ≤0.010%
cation traces
Al: ≤0.0005%, As: ≤0.0001%, Ca: ≤0.0005%, Cu: ≤0.0002%, Fe: ≤0.0005%, K: ≤0.05%, Mg: ≤0.0005%, Ni: ≤0.00025%, Pb: ≤0.0005%, Zn: ≤0.001%, heavy metals (as Pb): ≤0.0005%
storage temp.
2-30°C
SMILES string
[OH-].[Na+]
InChI
1S/Na.H2O/h;1H2/q+1;/p-1
InChI key
HEMHJVSKTPXQMS-UHFFFAOYSA-M
General description
Application
- Como desprotonador en la síntesis de nanopartículas del marco imidazolato zeolítico (ZIF-94).
- Como agente precipitante en la síntesis de nanopartículas de NiO (óxido de níquel) utilizando nitrato de níquel.
- Como controlador del pH en la síntesis de polvo de óxido de cromito de zinc (ZnCr2O4) a partir de nitrato de zinc y nitrato de cromo por proceso hidrotermal.
Analysis Note
Carbonato (como Na₂CO₃): ≤ 1,0 %
Cloruros (Cl): ≤ 0,012 %
Fosfatos (PO₄): ≤ 0,0005 %
Silicatos (SiO₂): ≤ 0,001 %
Sulfatos (SO₄): ≤ 0,010 %
Nitrógeno total (N): ≤ 0,0003 %
Metales pesados (como Pb): ≤ 0,0005 %
Al (Aluminio): ≤ 0,0005 %
As (Arsénico): ≤ 0,0001 %
Ca (Calcio): ≤ 0,0005 %
Cu (Cobre): ≤ 0,0002 %
Fe (Hierro): ≤ 0,0005 %
K (Potasio): ≤ 0,05
Mg (Magnesio): ≤ 0,0005 %
Ni (Níquel): ≤ 0,00025 %
Pb (plomo): ≤ 0,0005 %
Zn (Cinc): ≤ 0,001 %
Legal Information
1 of 1
Este artículo | |||
|---|---|---|---|
| assay ≥99% NaOH basis (acidimetric) | assay ≥97.0% | assay ≥97% | assay 98-100.5% |
| agency suitable for SM 4500 - NH3 | agency suitable for DIN 38407-42, suitable for EPA 1621, suitable for EPA 533, suitable for EPA 8327, suitable for EPA OTM-45, suitable for SM 4500 - NH3 | agency suitable for DIN 38407-42, suitable for EPA 1621, suitable for EPA 533, suitable for EPA 8327, suitable for EPA OTM-45, suitable for SM 4500 - NH3 | agency - |
| Quality Level 300 | Quality Level 200 | Quality Level 100 | Quality Level 200 |
| form pellets | form pellets | form pellets | form pellets |
| pH >14 (20 °C, 100 g/L in H2O) | pH (ca.> 14 at 100 g/l at 20 °C) | pH - | pH - |
| solubility 1090 g/L | solubility water: soluble 1,260 g/L at 20 °C | solubility water: soluble 1260 g/L at 20 °C | solubility water: soluble 1260 g/L at 20 °C |
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signalword
Danger
hcodes
Hazard Classifications
Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A
flash_point_f
Not applicable
flash_point_c
Not applicable
Clase de almacenamiento
8B - Non-combustible corrosive hazardous materials
Certificados de análisis (COA)
Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»
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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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