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NIST185I

Hydrogénophtalate de potassium

NIST® SRM® 185i, pH standard

Synonyme(s) :

Phtalate de potassium monobasique, Acide phtalique monopotassium salt, Biphthalate de potassium, Hydrogénophthalate de potassium, KHP

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A propos de cet article

Formule linéaire :
HOOCC6H4COOK
Numéro CAS:
Poids moléculaire :
204.22
UNSPSC Code:
41116107
NACRES:
NA.24
PubChem Substance ID:
MDL number:
Beilstein/REAXYS Number:
3637128
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grade

certified reference material

Quality Level

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.)

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 185I is certified as a pH standard [pH(S)].   

Each unit of SRM 185I consists of 60 g of potassium hydrogen phthalate.

SRM 185I _SDS

SRM 185I _CoA

Application

Potassium hydrogen phthalate standard reference material (SRM) is intended for use in preparing solutions for calibrating electrodes for pH measuring systems.

Features and Benefits

  • SRM 185I is available with certified pH(S) values and their expanded uncertainties. 
  • Certified values are derived from potential measurements of cells without liquid junction by the primary measurement method. 
  • Certified values are metrologically traceable to the International System of Units (SI) of amount-of-substance and mass and to the definition of single ion activity. 
  • The NIST certificate is provided with maintenance, storage, handling, and use 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


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Certificats d'analyse (COA)

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Contenu apparenté

This page is intended to make it easier to find the consumables you need based on the analytical method you’re using. Methods included on this page come from the EPA, Standard Methods and ASTM.





Numéro d'article de commerce international

RéférenceGTIN
NIST185I04061834140306