PHR1330

Monobasic Potassium Phosphate

Pharmaceutical Secondary Standard; Certified Reference Material

• Synonym(s): Potassium phosphate monobasic, Potassium dihydrogen phosphate, prim.-Potassium phosphate
• Linear Formula: KH₂PO₄
• CAS Number: 7778-77-0
• Molecular Weight: 136.09
• NACRES: NA.24
• PubChem Substance ID: 329823315
• UNSPSC Code: 41116107
• EC Number: 231-913-4
• MDL number: MFCD00011401

Properties

• Quality Segment: 300
• grade: certified reference material, pharmaceutical secondary standard
• agency: traceable to USP 1551139
• API family: monobasic potassium phosphate
• CofA: current certificate can be downloaded
• technique(s): HPLC: suitable, gas chromatography (GC): suitable
• pKa (25 °C): (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
• mp: 252.6 °C (lit.)
• density: 2.338 g/mL at 25 °C (lit.)
• application(s): pharmaceutical (small molecule)
• format: neat
• storage temp.: 2-30°C
• SMILES string: [K+].OP(O)([O-])=O
• InChI: 1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1
• InChI key: GNSKLFRGEWLPPA-UHFFFAOYSA-M

Description

General description

Monobasic Potassium Phosphate is a water-soluble inorganic salt. It is used as a starting material in the synthesis of potassium metaphosphate.

Pharmaceutical secondary standards for application in quality control, provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards.

Application

These Secondary Standards are qualified as Certified Reference Materials. These are suitable for use in several analytical applications including but not limited to pharma release testing, pharma method development for qualitative and quantitative analyses, food and beverage quality control testing, and other calibration requirements.

Analysis Note

These secondary standards offer multi-traceability to the US and EP primary standards, where they are available.

Other Notes

This Certified Reference Material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis.

To see an example of a Certificate of Analysis for this material enter LRAB7784 in the slot below. This is an example certificate only and may not be the lot that you receive.

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable