Description
71635 SIGMA-ALDRICH
Sodium citrate dibasic sesquihydrate
purum p.a., ≥99.0% (T)
Synonym: Citric acid disodium salt, Disodium hydrogen citrate sesquihydrate
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CAS Number 6132-05-4
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Linear Formula HOC(COOH)(CH2COONa)2 · 1.5H2O
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Molecular Weight 263.11
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Beilstein Registry Number 3770069
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EC Number 205-623-3
Properties
grade | purum p.a. |
assay | ≥99.0% (T) |
pH | 4.6-5.2 (25 °C, 50 mg/mL in H2O) |
solubility | water: soluble 263.1 g/L |
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 |
Application
Sodium citrate dibasic sesquihydrate may be employed in the following studies:
• In the Supel Que Citrate (EN) tubes for the quantification of pesticides in blackcurrants by triple quadrupole GC-QqQ-MS/MS [Gas chromatography coupled to tandem mass spectrometry (GC-MS/MS) coupled with triple quadrupole (QqQ) analyzer] method.
• Dispersive solid phase extraction (dSPE) method, commonly referred as QuEChERS.2
• Preparation of RNA precipitation solution.
General description
Sodium citrate dibasic sesquihydrate is a colorless crystalline sodium salt.