NIST2191A

Sodium bicarbonate

NIST^® SRM^® 2191a, pD Standard

• 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

Properties

• 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

Description

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 p^D measuring system.

Features and Benefits

• SRM 2191A certified values are correspond to log (1/a^D).
• 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

Safety Information

• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable