Skip to Content
Merck
CN

NIST2186II

Disodium hydrogen phosphate

NIST SRM 2186II

Synonym(s):

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

Sign In to View Organizational & Contract Pricing.

Select a Size

About This Item

Linear Formula:
Na2HPO4
CAS Number:
7558-79-4
Molecular Weight:
141.96
NACRES:
NA.24
PubChem Substance ID:
329818735
UNSPSC Code:
41116107
MDL number:
MFCD00003496

Key Documents

View All Documentation
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

Product Name

Disodium hydrogen phosphate, NIST SRM 2186II

InChI

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

SMILES string

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

InChI key

BNIILDVGGAEEIG-UHFFFAOYSA-L

grade

certified reference material

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

Quality Level

100

Looking for similar products? Visit Product Comparison Guide

Application

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

General description

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

SRM 2186II_cert

SRM 2186II_SDS

Legal Information

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

Storage Class

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service