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NIST2191A

Sodium bicarbonate

NIST® SRM® 2191a, pD Standard

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Synonym(s):
Sodium hydrogen carbonate
Linear Formula:
NaHCO3
CAS Number:
144-55-8
Molecular Weight:
84.01
Beilstein:
4153970
EC Number:
205-633-8
MDL number:
MFCD00003528
UNSPSC Code:
41116107
PubChem Substance ID:
329818736
NACRES:
NA.24

grade

certified reference material

Quality Level

100

form

crystals

packaging

pkg of 30 g

manufacturer/tradename

NIST®

pH

8.3(0.84% solution)

pKa (25 °C)

(1) 6.37, (2) 10.25 (carbonic acid)

density

2.16 g/mL at 25 °C (lit.)

application(s)

general analytical

SMILES string

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

InChI

1S/CH2O3.Na/c2-1(3)4;/h(H2,2,3,4);/q;+1/p-1

InChI key

UIIMBOGNXHQVGW-UHFFFAOYSA-M

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General description

Each unit of SRM 2191A contains 30g of sodium bicarbonate.

SRM 2191A_cert

SRM 2191A_SDS

Application

Sodium bicarbonate standard reference material (SRM) is intended for preparing buffer solution, used to calibrate electrodes for pD measuring system.

Features and Benefits

  • SRM 2191A certified values are correspond to log (1/aD).
  • The NIST certificate is provided with storage and stability instructions.

Other Notes

Please download a current certificate at nist.gov/SRM for current analytes and certified values.

Legal Information

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

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’.

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