NIST2186I

Potassium phosphate monobasic

NIST^® SRM^® 2186I

• Synonym(s): Monopotassium phosphate, Potassium dihydrogen phosphate, prim.-Potassium phosphate
• Linear Formula: KH₂PO₄
• CAS Number: 7778-77-0
• Molecular Weight: 136.09
• MDL number: MFCD00011401
• UNSPSC Code: 12352302
• PubChem Substance ID: 329818734
• NACRES: NA.24

Properties

• grade: certified reference material
• Quality Level: 100
• agency: NIST standard reference material
• packaging: pkg of 30 g
• manufacturer/tradename: NIST^®
• pKa (25 °C): (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
• mp: 252.6 °C (lit.)
• density: 2.338 g/mL at 25 °C (lit.)
• application(s): general analytical
• format: neat
• SMILES string: [K+].OP(O)([O-])=O
• InChI: 1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1
• InChI key: GNSKLFRGEWLPPA-UHFFFAOYSA-M

Description

General description

SRM 2186I is certified as a p^H standard for p^D(S) determination.

SRM 2186I _SDS

SRM 2186I _CoA

Application

SRM 2186I solution is recommended for the calibration of p^H meters to use for the measurement of p^D in deuterium oxide.

Other Notes

Certified for the analytes listed below.
Potassium Dihydrogen Phosphate

See certificate for values and more details at nist.gov/SRM.

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: 13 - Non Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable