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
06203
Sodium hydroxide
puriss., meets analytical specification of Ph. Eur., BP, NF, E524, 98-100.5%, pellets
Synonym(s):
Caustic soda
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| Size/SKU | Availability | Price |
|---|
About This Item
vapor density
>1 (vs air)
Quality Segment
vapor pressure
<18 mmHg ( 20 °C), 3 mmHg ( 37 °C)
grade
puriss.
assay
98-100.5%
form
pellets
quality
meets analytical specification of Ph. Eur., BP, NF, E524
impurities
≤0.0005% total nitrogen (N), ≤0.002% heavy metals (as Pb), ≤0.5% Na2CO3
mp
318 °C (lit.)
solubility
water: soluble 1260 g/L at 20 °C
density
2.13 g/cm3 at 20 °C
anion traces
chloride (Cl-): ≤0.002%, phosphate (PO43-): ≤0.001%, silicate (as SiO2): ≤0.01%, sulfate (SO42-): ≤0.003%
cation traces
Al: ≤0.001%, As: ≤0.0002%, Ca: ≤0.001%, Fe: ≤0.001%, Hg: ≤0.0001%, K: ≤0.1%, Pb: ≤0.5 ppm
SMILES string
[OH-].[Na+]
InChI
1S/Na.H2O/h;1H2/q+1;/p-1
InChI key
HEMHJVSKTPXQMS-UHFFFAOYSA-M
General description
Application
- A reagent in the gold-catalyzed selective oxidation of glycerol to glyceric acid.
- A catalyst for the cross-dehydrogenative coupling of alcohols and hydrosilanes to synthesize silyl ethers.
- A base in the transition-metal free Sonogashira-type couplings of aryl halides and alkynes to synthesize ynones in the presence of PEG as a phase-transfer agent.
1 of 1
This Item | |||
|---|---|---|---|
| grade puriss. | grade - | grade - | grade - |
| assay 98-100.5% | assay 97% | assay 99.99% trace metals basis | assay ≥98.0% (T) |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| solubility water: soluble 1260 g/L at 20 °C | solubility water: soluble 1260 g/L at 20 °C | solubility water: soluble 1,260 g/L at 20 °C | solubility water: soluble 1,260 g/L at 20 °C |
| form pellets | form powder | form pellets | form pellets |
| vapor density >1 (vs air) | vapor density >1 (vs air) | vapor density >1 (vs air) | vapor density >1 (vs air) |
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signalword
Danger
hcodes
Hazard Classifications
Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A
Storage Class
8B - Non-combustible corrosive hazardous materials
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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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 weight of one pellet?
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Unfortunately, no additional testing for the weight of one pellet is determined.
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