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
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71498
Einwertiges Natriumcitrat
purum p.a., anhydrous, ≥99.0% (T)
Synonym(e):
Natriumhydrogencitrat, Zitronensäure Mononatriumsalz
Größe auswählen
| Größe/SKU | Verfügbarkeit | Preis |
|---|---|---|
250 g | Warenkorb auf Verfügbarkeit prüfen | € 65,90 |
1 kg | Warenkorb auf Verfügbarkeit prüfen | € 120,00 |
Über diesen Artikel
Quality Segment
grade
purum p.a.
assay
≥99.0% (T)
form
crystals
pH
3.5-3.8 (25 °C, 50 mg/mL in H2O)
solubility
water: soluble 50, clear, colorless
anion traces
chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤50 mg/kg
cation traces
Ca: ≤50 mg/kg, Cd: ≤50 mg/kg, Co: ≤50 mg/kg, Cu: ≤50 mg/kg, Fe: ≤50 mg/kg, K: ≤100 mg/kg, Ni: ≤50 mg/kg, Pb: ≤50 mg/kg, Zn: ≤50 mg/kg
functional group
carboxylic acid, hydroxyl
SMILES string
[Na+].OC(=O)CC(O)(CC([O-])=O)C(O)=O
InChI
1S/C6H8O7.Na/c7-3(8)1-6(13,5(11)12)2-4(9)10;/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);/q;+1/p-1
InChI key
HWPKGOGLCKPRLZ-UHFFFAOYSA-M
General description
Application
1 of 1
Dieser Artikel | |||
|---|---|---|---|
| description purum p.a., anhydrous, ≥99.0% (T) | description BioXtra, anhydrous, ≥99.5% (T) | description 99% | description Molecular Biology, ≥99% |
| assay ≥99.0% (T) | assay ≥99.5% (T) | assay 99% | assay ≥99% |
| Quality Level 300 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| solubility water: soluble 50, clear, colorless | solubility H2O: 0.25 M at 20 °C, clear, colorless | solubility water: soluble 53.5 g/L at 20 °C | solubility water: soluble 100 mg/mL |
| form crystals | form crystals | form solid | form powder or crystals |
| functional group hydroxyl, carboxylic acid | functional group - | functional group hydroxyl, carboxylic acid | functional group - |
| anion traces chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤50 mg/kg | anion traces chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤50 mg/kg | anion traces - | anion traces - |
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Lagerklasse
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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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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