1.02400

Potassium hydrogen phthalate

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

• Sinonimo/i: Potassium hydrogen phthalate
• Formula empirica (notazione di Hill): C₈H₅KO₄
• Numero CAS: 877-24-7
• Peso molecolare: 204.22
• Numero MDL: MFCD00013070
• Codice UNSPSC: 41116107
• Numero indice EU: 212-889-4
• NACRES: NA.24

Proprietà

• agenzia: ISO 17025; reag. Ph. Eur.
• Livello qualitativo: 300
• Stato: solid
• Potenza: >3200 mg/kg LD₅₀, oral (Rat)
• tecniche: titration: suitable
• pH: 4.0 (20 °C, 50 g/L in H₂O)
• Punto di fusione: 295-300 °C
• Solubilità: 80 g/L
• Densità: 1.636 g/cm³
• Densità bulk: 900 kg/m³
• Temperatura di conservazione: 15-25°C
• Stringa SMILE: [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; IWZKICVEHNUQTL-UHFFFAOYSA-M

Descrizione

Descrizione generale

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.

Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.

Applicazioni

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.

Caratteristiche e vantaggi

• 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
• Accompanied by a certificate of analysis (CoA)

Confezionamento

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

Note legali

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

Informazioni sulla sicurezza

• Codice della classe di stoccaggio: 11 - Combustible Solids
• Classe di pericolosità dell'acqua (WGK): WGK 1
• Punto d’infiammabilità (°F): 387.1 °F - Pensky-Martens closed cup
• Punto d’infiammabilità (°C): 197.3 °C - Pensky-Martens closed cup