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Sodium phosphate dibasic

SIGALD/04276 - puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, E 339, anhydrous, 98-100.5% (calc. to the dried substance)

Synonym: sec-Sodium phosphate; Disodium hydrogen phosphate; Disodium phosphate; Sodium hydrogenphosphate

CAS Number: 7558-79-4
Empirical Formula (Hill Notation): HNa2O4P
Molecular Weight: 141.96
EC Number: 231-448-7
MDL Number: MFCD00003496
Linear Formula: Na2HPO4
Product Type: Chemical

Catalog Number PKG Qty. Price Quantity
45-04276-1KG 1 kg
$210.00
1/EA
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45-04276-6X1KG 1 kg
$385.00
6/EA
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45-04276-5KG 5 kg
$441.00
1/EA
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45-04276-4X5KG 5 kg
$811.00
4/EA
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agency meets analytical specifications of BP
  meets analytical specifications of Ph. Eur.
  meets analytical specifications of USP
anion traces chloride (Cl-): ≤50 mg/kg
  fluoride (F-): ≤10 mg/kg
  sulfate (SO42-): ≤200 mg/kg
assay 98-100.5% (calc. to the dried substance)
cation traces As: ≤2 mg/kg
  Cd: ≤1 mg/kg
  Cu: ≤10 mg/kg
  Fe: ≤20 mg/kg
  Hg: ≤1 mg/kg
  Pb: ≤4 mg/kg
  Zn: ≤10 mg/kg
form powder
grade puriss.
impurities reducing matter, complies
  residual solvents, complies
  ≤0.001% heavy metals (as Pb)
  ≤0.002% ammonium (NH4)
  ≤0.2% water-insoluble matter
  ≤1% NaH2PO4 (calc. to dried subst.)
  ≤2.0% pyrophosphate (as Na4P2O7)
InChI 1S/2Na.H3O4P/c;;1-5(2,3)4/h;;(H3,1,2,3,4)/q2*+1;/p-2
InChI key BNIILDVGGAEEIG-UHFFFAOYSA-L
loss ≤1% loss on drying, 105°C, 4h
  ≤1% loss on drying, 130 °C
pH 8.4-9.6 (20 °C, 1%)
pKa (25 °C) (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
quality meets analytical specification of Ph. Eur., BP, USP, FCC, E 339
Quality Level 200 
SMILES string [Na+].[Na+].[H]OP([O-])([O-])=O
solubility alcohol: insoluble
  H2O: soluble 8 parts
  H2O: very soluble (Hot)
suitability complies for appearance of solution
Application: Sodium phosphate dibasic has been used for preparing phosphate buffer which in turn is utilized in X-gal staining.
Biochem/physiol Actions: Sodium phosphate dibasic is an important component of running buffer of denaturing gel electrophoresis. It induces glomerular calcification as well as other nephrotic syndrome in Sprague-Dawley rats.
WGK Germany WGK 1
Flash Point(F) Not applicable
Flash Point(C) Not applicable
Purity 98-100.5% (calc. to the dried substance)
UNSPSC 12161700

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