NIST2185

Potassium hydrogen phthalate

NIST^® SRM^® 2185, pD standard

• Synonym(s): Potassium phthalate monobasic, KHP, Phthalic acid monopotassium salt, Potassium biphthalate, Potassium hydrogen phthalate
• Linear Formula: HOOCC₆H₄COOK
• CAS Number: 877-24-7
• Molecular Weight: 204.22
• Beilstein: 3637128
• EC Number: 212-889-4
• MDL number: MFCD00013070
• UNSPSC Code: 41116107
• PubChem Substance ID: 329818733
• NACRES: NA.24

Properties

• grade: certified reference material
• Quality Level: 100
• Agency: suitable for SM 2310; suitable for SM 2320
• form: crystals
• packaging: pkg of 60 g
• manufacturer/tradename: NIST^®
• mp: 295-300 °C (dec.) (lit.)
• application(s): pharmaceutical (small molecule)
• SMILES string: [K+].OC(=O)c1ccccc1C([O-])=O
• InChI: 1S/C8H6O4.K/c9-7(10)5-3-1-2-4-6(5)8(11)12;/h1-4H,(H,9,10)(H,11,12);/q;+1/p-1
• InChI key: IWZKICVEHNUQTL-UHFFFAOYSA-M

Description

General description

SRM 2185_cert

SRM 2185_SDS

Application

The Standard Reference Material (SRM) is primarily intended for use in the preparation of buffer solutions for the calibration of electrodes in pH measurement systems.

Features and Benefits

Instructions for use and storage are provided on the NIST certificate.

Other Notes

Certified for the analytes listed below.
Potassium Hydrogen Phthalate

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 Code: 13 - Non Combustible Solids
• WGK: WGK 3
• Flash Point(F): 387.1 °F - Pensky-Martens closed cup
• Flash Point(C): 197.3 °C - Pensky-Martens closed cup