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Key Documents

NIST2186II

Disodium hydrogen phosphate

NIST SRM 2186II

Synonym(s):

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

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About This Item

Linear Formula:
Na2HPO4
CAS Number:
Molecular Weight:
141.96
MDL number:
UNSPSC Code:
41116107
PubChem Substance ID:
NACRES:
NA.24

grade

certified reference material

Quality Level

form

powder

packaging

pkg of 30 g

manufacturer/tradename

NIST®

pKa (25 °C)

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

application(s)

general analytical

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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General description

NIST2186II is certified as a pH standard for pD(S) determination.

SRM 2186II_cert

SRM 2186II_SDS

Application

SRM 2186II solution is recommended for the calibration of pH meters to use for the measurement of pD in deuterium oxide.

Legal Information

NIST is a registered trademark of National Institute of Standards and Technology

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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