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NIST2185

Potassium hydrogen phthalate

NIST® SRM® 2185, pD standard

Synonym(s):

Potassium phthalate monobasic, KHP, Phthalic acid monopotassium salt, Potassium biphthalate, Potassium hydrogen phthalate

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About This Item

Linear Formula:
HOOCC6H4COOK
CAS Number:
877-24-7
Molecular Weight:
204.22
UNSPSC Code:
41116107
NACRES:
NA.24
PubChem Substance ID:
329818733
EC Number:
212-889-4
Beilstein/REAXYS Number:
3637128
MDL number:
MFCD00013070
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grade

certified reference material

Quality Segment

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

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

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Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

387.1 °F - Pensky-Martens closed cup

flash_point_c

197.3 °C - Pensky-Martens closed cup

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