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Merck
CN

255793

Sodium phosphate dibasic

99.95% trace metals basis

Synonym(s):

sec-Sodium phosphate, Disodium hydrogen phosphate, Disodium phosphate, Sodium hydrogenphosphate

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About This Item

Linear Formula:
Na2HPO4
CAS Number:
7558-79-4
Molecular Weight:
141.96
EC Number:
231-448-7
MDL number:
MFCD00003496
UNSPSC Code:
12352302
eCl@ss:
38070211
PubChem Substance ID:
24855481
NACRES:
NA.23
Assay:
99.95% trace metals basis
Form:
solid
Solubility:
water: soluble

Key Documents

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Quality Level

100

Assay

99.95% trace metals basis

form

solid

reaction suitability

core: sodium

impurities

≤550.0 ppm Trace Metal Analysis

pH

8.9-9.2 (25 °C, 50 g/L in water)

pKa (25 °C)

(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)

solubility

water: soluble

SMILES string

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

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

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Application

Sodium phosphate dibasic is widely used to prepare phosphate buffer for mobilephase for HPLC and cell separation techniques.

Storage Class Code

13 - Non 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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Certificates of Analysis (COA)

Lot/Batch Number
MKCX9081
MKCW2189
MKCK0884
MKCF2416
MKBT0410V

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