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71643

Sigma-Aldrich

Sodium phosphate dibasic dihydrate

BioUltra, for molecular biology, ≥99.0% (T)

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Synonym(s):
sec-Sodium phosphate, Disodium hydrogen phosphate dihydrate, Disodium phosphate, di-Sodium hydrogen phosphate dihydrate
Linear Formula:
Na2HPO4 · 2H2O
CAS Number:
Molecular Weight:
177.99
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.25

grade

for molecular biology

Quality Level

product line

BioUltra

Assay

≥99.0% (T)

form

crystals

impurities

DNases, none detected
RNases, none detected
insoluble matter, passes filter test
phosphatases, none detected
proteases, none detected
≤0.001% total nitrogen (N)

pH

8.9-9.2 (25 °C, 0.5 M in H2O)

solubility

H2O: 0.5 M at 20 °C, clear, colorless

anion traces

chloride (Cl-): ≤10 mg/kg
sulfate (SO42-): ≤50 mg/kg

cation traces

Al: ≤5 mg/kg
As: ≤0.1 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

λ

0.5 M in H2O

UV absorption

λ: 260 nm Amax: 0.03
λ: 280 nm Amax: 0.03

application(s)

diagnostic assay manufacturing

SMILES string

O.O.[Na+].[Na+].OP([O-])([O-])=O

InChI

1S/2Na.H3O4P.2H2O/c;;1-5(2,3)4;;/h;;(H3,1,2,3,4);2*1H2/q2*+1;;;/p-2

InChI key

KDQPSPMLNJTZAL-UHFFFAOYSA-L

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This Item
042721.9362271505
Sodium phosphate dibasic dihydrate BioUltra, for molecular biology, ≥99.0% (T)

Sigma-Aldrich

71643

Sodium phosphate dibasic dihydrate

Premium Grade
Sodium phosphate dibasic dihydrate meets analytical specification of Ph. Eur., BP, 98.5-101% (calc. to the dried substance)

Sigma-Aldrich

04272

Sodium phosphate dibasic dihydrate

Essential Grade
Sodium phosphate monobasic dihydrate BioUltra, for molecular biology, ≥99.0% (T)

Sigma-Aldrich

71505

Sodium phosphate monobasic dihydrate

Premium Grade
product line

BioUltra

product line

-

product line

EMPLURA®

product line

BioUltra

assay

≥99.0% (T)

assay

98.5-101% (calc. to the dried substance)

assay

-

assay

≥99.0% (T)

form

crystals

form

crystals

form

-

form

powder or crystals

impurities

DNases, none detected, RNases, none detected, insoluble matter, passes filter test, phosphatases, none detected, proteases, none detected, ≤0.001% total nitrogen (N)

impurities

reducing matter, complies, residual solvents, complies, ≤0.001% heavy metals (as Pb), ≤1% NaH2PO4 (calc. to dried subst.)

impurities

-

impurities

DNases, none detected, RNases, none detected, insoluble matter, passes filter test, phosphatases, none detected, proteases, none detected

pH

8.9-9.2 (25 °C, 0.5 M in H2O)

pH

9.0-9.4 (20 °C, 1%)

pH

-

pH

4.0-4.5 (25 °C, 1 M in H2O)

Application

Sodium phosphate dibasic dehydrate has been used in the preparation of antifreeze solution to analyse the transduction pattern in the rat central nervous system (CNS) and in the preparation of sodium phosphate buffer.

Other Notes

Gel electrophoresis - running buffer component for denaturing gels containing formamide

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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