CAS No 877-24-7 , potassium Search by region : India

Name: potassium
Synonyms: Potassium acid phthalate; 877-24-7; Monopotassium phthalate;potassium; Hydrogen potassium phthalate; Potassium biphthalate;Potassium hydrogen phthalate;2-carboxybenzoate;
CAS Registry Number:877-24-7
Transport: UN 1789 8/PG 3
Melting Point: 295-300 ºC
Flash Point: 196.7°C
Boiling Point: 378.3°C at 760 mmHg
Density: 1.006 g/mL at 20 °C
Water Solubility: 80 G/L (20 ºC)
Safety Statements: Moderately toxic by ingestion and skin contact. When heated to decomposition it emits acrid smoke and irritating vapors.
Hazard Symbols: Xi: Irritant;C: Corrosive;
Flash Point: 196.7°C
EINECS: 212-889-4
Molecular Weight: 204.2212
InchiKey: IWZKICVEHNUQTL-UHFFFAOYSA-M
InChI: 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
Risk Statements: S22;S24/25
Molecular Formula: C₈H₅KO₄
Molecular Structure:

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877-24-7 Potassium Biphthalate

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References of potassium

Title: Potassium Biphthalate
CAS Registry Number: 877-24-7
CAS Name: Phthalic acid potassium acid salt
Synonyms: potassium acid phthalate; potassium hydrogen phthalate; acid potassium phthalate
Molecular Formula: C8H5KO4
Molecular Weight: 204.22
Percent Composition: C 47.05%, H 2.47%, K 19.15%, O 31.34%
Line Formula: HOOCC6H4COOK
Literature References: Prepd by half-neutralization of a phthalic anhydride soln: F. J. Welcher, Organic Analytical Reagents vol. 2 (Van Nostrand, New York, 1947) pp 75-79.
Properties: Orthorhombic crystals, stable in air. d425 1.636. Acid reaction; pH of 0.05M aq soln at 25° = 4.005 (glass electrode). Sol in about 12 parts cold water, 3 parts boiling water; slightly sol in alcohol.
Density: d425 1.636
Use: As primary standard for preparing volumetric alkali solns, also as a buffer in pH determinations.