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1.02400

Potassium hydrogen phthalate

Volumetric standard, secondary reference material for alkalimetry, traceable to NIST Standard Reference Material (SRM) Certipur® Reag. Ph Eur

別名:

Potassium hydrogen phthalate

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この商品について

実験式（ヒル表記法）:
C8H5KO4
CAS番号:
877-24-7
分子量:
204.22
UNSPSC Code:
41116107
EC Index Number:
212-889-4
NACRES:
NA.24
MDL number:
MFCD00013070
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Quality Level

300

agency

ISO 17025, reag. Ph. Eur.

form

solid

potency

>3200 mg/kg LD50, oral (Rat)

technique(s)

titration: suitable

pH

4.0 (20 °C, 50 g/L in H2O)

mp

295-300 °C

solubility

80 g/L

density

1.636 g/cm3

bulk density

900 kg/m3

storage temp.

15-25°C

SMILES string

[K+].[O-]C(=O)c1c(cccc1)C(=O)[O-].[H+]

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

Potassium hydrogen phthalate, also known as KHP, is a volumetric standard manufactured under stringent conditions and measured with the highest possible precision. Its mass fraction is determined by potentiometric titration, and it is qualified in a DIN EN ISO/IEC 17025 accredited laboratory.

Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.

In our effort to be more sustainable, we′re going digital with COAs-download them directly from our website. Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.

Application

It finds its use as a certified reference material (CRM) for the standardization of volumetric solutions in alkalimetric titrations, according to Ph. Eur. It is also used to prepare a standard solution in determination of COD.

Features and Benefits

  • Available as a solid in a secure glass bottle to ensure its stability for the entire shelf life until opened.
  • Certified reference material according to ISO 17034
  • High-purity material traceable to NIST SRMs
  • Qualified in a DIN EN ISO/IEC 17025 accredited laboratory
  • In accordance with the chapter reagents of Ph. Eur
  • High-quality offering accurate titer determinations

Packaging

SKU-pack size numbers ending with a "3" are SmartChemicals with an RFID tag on the label for seamless data transfer to the instrument, e.g. xxxxxx1003 or xxxxxxx 4003. More information on www.sigmaaldrich.com/SmartChemicals

Legal Information

CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany

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保管分類

11 - Combustible Solids

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flash_point_f

387.1 °F - Pensky-Martens closed cup

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197.3 °C - Pensky-Martens closed cup

試験成績書（COA）

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資料

Analytical Method: Analytical Quality Assurance, Standard for COD/Chloride

Preparation of a standard solution for COD/chloride

Importance of Volumetric Solution Standardization

The titer determination or standardization of a titration solution is essential for accurate and reliable titration results.

Titration 4.0

SmartChemicals enable wireless CoA data transfer, reducing human error in titration experiments.

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グローバルトレードアイテム番号

カタログ番号GTIN
1.02400.008304054839567575
1.02400.008004022536555768