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.
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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
S9638
Sodium phosphate monobasic monohydrate
ACS reagent, ≥98%
Synonym(s):
Monosodium phosphate, Sodium dihydrogen phosphate monohydrate
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InChI key
BBMHARZCALWXSL-UHFFFAOYSA-M
InChI
1S/Na.H3O4P.H2O/c;1-5(2,3)4;/h;(H3,1,2,3,4);1H2/q+1;;/p-1
SMILES string
[Na+].[H]O[H].OP(O)([O-])=O
grade
ACS reagent
assay
≥98%, 98.0-102.0%
form
crystalline
impurities
≤0.01% Insoluble matter
pH
4.1-4.5 (25 °C, 5% in solution)
anion traces
chloride (Cl-): ≤5 ppm, sulfate (SO42-): ≤0.003%
cation traces
Ca: ≤0.005%, Fe: ≤0.001%, K: ≤0.01%, heavy metals: ≤0.001% (by ICP-OES)
Quality Level
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Related Categories
1 of 4
This Item | 71504 | S3522 | 567545 |
|---|---|---|---|
| form crystalline | form crystals | form powder | form solid |
| assay ≥98%, 98.0-102.0% | assay ≥99.0% (T) | assay 98.0-102.0% | assay ≥98% (by assay) |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 100 |
| grade ACS reagent | grade ACS reagent, puriss. p.a. | grade - | grade ACS reagent |
| pH 4.1-4.5 (25 °C, 5% in solution) | pH 4.1-4.5 (25 °C, 50 mg/mL in H2O) | pH 4.1-4.5 (25 °C, 5% in solution) | pH - |
| impurities ≤0.01% Insoluble matter | impurities ≤0.001% total nitrogen (N), ≤0.01% insoluble matter | impurities ≤0.01% Insoluble matter | impurities - |
Storage Class
13 - Non Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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Protocols
To measure alcohol dehydrogenase activity, this assay uses β-nicotinamide adenine dinucleotide phosphate and a continuous spectrophotometric rate determination at 340 nm.
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How can I determine the shelf life / expiration / retest date of this product?
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Bonjour, Phosphate de sodium monobasic monohydrate: S9638-250G Est ce que cette qualité convient pour une phase HPLC? Cordialement
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This product is suitable for tests that require ASC grade sodium phosphate monobasic monohydrate, but it is not optimal for High Performance Liquid Chromatography (HPLC) mobile phases. A more suitable product is 52074, which is specifically intended for HPLC mobile phases.
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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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