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Sodium phosphate dibasic_Molecular_structure_CAS_7558-79-4)
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Sodium phosphate dibasic

Catalog No. 71636 Name Sigma Aldrich
CAS Number 7558-79-4 Website http://www.sigmaaldrich.com
M. F. HNa2O4P Telephone 1-800-521-8956
M. W. 141.958841 Fax
Purity ≥99.5% (T) Email
Storage Chembase ID: 130837

SYNONYMS

Title
磷酸钠 二元
IUPAC name
disodium hydrogen phosphate
IUPAC Traditional name
disodium hydrogen phosphate
Synonyms
Sodium hydrogenphosphate
磷酸二钠
sec-Sodium phosphate
Disodium phosphate
Disodium hydrogen phosphate
二盐基磷酸钠
磷酸一氢钠
磷酸氢二钠

DATABASE IDS

EC Number 231-448-7
PubChem SID 24886240
CAS Number 7558-79-4
MDL Number MFCD00003496

PROPERTIES

Antion Traces chloride (Cl-): ≤10 mg/kg
Antion Traces sulfate (SO42-): ≤50 mg/kg
Cation Traces Al: ≤5 mg/kg
Cation Traces As: ≤0.2 mg/kg
Cation Traces Ba: ≤5 mg/kg
Cation Traces Bi: ≤5 mg/kg
Cation Traces Ca: ≤10 mg/kg
Cation Traces Cd: ≤5 mg/kg
Cation Traces Co: ≤5 mg/kg
Cation Traces Cr: ≤5 mg/kg
Cation Traces Cu: ≤5 mg/kg
Cation Traces Fe: ≤5 mg/kg
Cation Traces K: ≤50 mg/kg
Cation Traces Li: ≤5 mg/kg
Cation Traces Mg: ≤5 mg/kg
Cation Traces Mn: ≤5 mg/kg
Cation Traces Mo: ≤5 mg/kg
Cation Traces Ni: ≤5 mg/kg
Cation Traces Pb: ≤5 mg/kg
Cation Traces Sr: ≤5 mg/kg
Cation Traces Zn: ≤5 mg/kg
Grade for molecular biology
Impurities DNases, none detected
Impurities RNases, none detected
Impurities insoluble matter, passes filter test
Impurities phosphatases, none detected
Impurities proteases, none detected
Impurities ≤0.001% total nitrogen (N)
λ 0.5 M in H2O
Linear Formula Na2HPO4
Loss on Drying ≤0.1% loss on drying, 110 °C
Product Line BioUltra
Purity ≥99.5% (T)
Absorption Wavelength λ: 260 nm Amax: ≤0.025
Absorption Wavelength λ: 280 nm Amax: ≤0.020
pKa (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid) (25°C)
pH 8.8-9.4 (25 °C, 0.5 M in H2O)
Solubility H2O: soluble0.5 M at 20 °C, clear, colorless
MSDS Link Download
Personal Protective Equipment Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
RTECS WC4500000
German water hazard class 1

DETAILS

REFERENCES