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71635

Sigma-Aldrich

Natriumcitrat, zweibasisch Sesquihydrat

purum p.a., ≥99.0% (T)

Synonym(e):

Dinatriumhydrogencitrat Sesquihydrat, Zitronensäure Dinatriumsalz

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250 G
CHF 44.10
1 KG
CHF 127.00

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250 G
CHF 44.10
1 KG
CHF 127.00

About This Item

Lineare Formel:
HOC(COOH)(CH2COONa)2 · 1.5H2O
CAS-Nummer:
6132-05-4
Molekulargewicht:
263.11
Beilstein:
3770069
EG-Nummer:
205-623-3
MDL-Nummer:
MFCD00674116
UNSPSC-Code:
12352100
PubChem Substanz-ID:
57652327
NACRES:
NA.21

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Qualität

purum p.a.

Qualitätsniveau

200

Assay

≥99.0% (T)

Form

crystals

pH-Wert

4.6-5.2 (25 °C, 50 mg/mL in H2O)

Löslichkeit

water: soluble 263.1 g/L

Anionenspuren

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤50 mg/kg

Kationenspuren

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

Funktionelle Gruppe

carboxylic acid

SMILES String

O.O.O.[Na+].[Na+].[Na+].[Na+].OC(=O)CC(O)(CC([O-])=O)C([O-])=O.OC(=O)CC(O)(CC([O-])=O)C([O-])=O

InChI

1S/C6H8O7.2Na.H2O/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);;;1H2/q;2*+1;/p-2

InChIKey

XNZQCYSOYHAYII-UHFFFAOYSA-L

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Allgemeine Beschreibung

Natriumcitrat, zweibasisches Sesquihydrat ist ein farbloses kristallines Natriumsalz.

Anwendung

Natriumcitrat, zweibasisches Sesquihydrat kann in folgenden Studien verwendet werden:
  • In Supel Que Citratröhrchen (EN) für die Quantifizierung von Pestiziden bei schwarzen Johannisbeeren durch die dreifach Quadrupol-GC-QqQ-MS/MS [Gaschromatographie gekoppelt an Tandemmassenspektrometrie (GC-MS/MS) gekoppelt mit dreifach Quadrupol-(QqQ)-Analyzer]-Methode.[1]
  • Dispersive Festphasen-Extraktionsmethode (dSPE), häufig bezeichnet als QuEChERS.
  • Herstellung einer RNA-Ausfällungslösung.[2]

Lagerklassenschlüssel

13 - Non Combustible Solids

WGK

WGK 1

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable

Persönliche Schutzausrüstung

Eyeshields, Gloves, type N95 (US)

Hier finden Sie alle aktuellen Versionen:

Analysenzertifikate (COA)

Lot/Batch Number
BCCM7299
BCCM5638
BCCM5637
BCCL0091
BCCL1453

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Sigma-Aldrich

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USP

1613859

Natriumcitrat

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Sigma-Aldrich

71406

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Supel™ QuE Citrate Extraction Tube, pk of 50, suitable for EN 15662

Supelco

55227-U

Supel™ QuE

Magnesiumsulfat anhydrous, reagent grade, ≥97%

Sigma-Aldrich

208094

Magnesiumsulfat

Edward M Turk et al.
The Journal of biological chemistry, 285(12), 8585-8594 (2010-01-13)
Yeast Suv3p is a member of the DEXH/D box family of RNA helicases and is a critical component of the mitochondrial degradosome, which also includes a 3' --> 5' exonuclease, Dss1p. Defects in the degradosome result in accumulation of aberrant
Stanisław Walorczyk
Talanta, 120, 106-113 (2014-01-29)
A triple quadrupole GC-QqQ-MS/MS method was optimized for multiresidue analysis of over 180 pesticides in blackcurrants. The samples were prepared by using a modified quick, easy, cheap, effective, rugged and safe (QuEChERS) analytical protocol. To reduce matrix co-extractives in the
Mudasir Bhat et al.
Environmental monitoring and assessment, 187(7), 398-398 (2015-06-04)
Dissipation patterns were studied following two applications of difenoconazole (score 25% EC) at 300 and 600 g ai ha(-1) as single and double dose respectively on Golden Delicious and Starkrimson cultivars of apple. Samples were collected at 0, 3, 6
Malik Mukhtar et al.
Environmental monitoring and assessment, 187(8), 482-482 (2015-07-02)
The present studies were carried out to observe the dissipation pattern of chlorpyrifos on apple in Kashmir Valley. Persistence of chlorpyrifos in apple was studied following two applications rates of chlorpyrifos (Dursban 20 EC) at 200 g a.i. ha(-1) (single dose
H Abdallah et al.
Journal of chromatography. A, 1355, 61-72 (2014-06-25)
A new high performance liquid chromatography-high resolution mass spectrometry (HPLC-HRMS) method was developed for a simultaneous multi-residue analysis of 22 sulfonamides (SAs) and their metabolites in edible animal (pig, beef, sheep and chicken) tissues. Sample preparation was optimized on the
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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

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    1. 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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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. 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.pdf

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