Potassium Hydrogen Phthalate 99.5%

Potassium hydrogen phthalate is an acidic salt compound which forms a white powder, colourless crystals, a colourless solution, and an ionic solid. It is slightly acidic and is often used as a primary standard for acid-base titrations because it is solid and air-stable, making it easy to weigh accurately.

• Primary Standard: Used for accurate titration in chemistry.
• Calibration Standard: Ensures instrument accuracy.
• pH Buffer: Creates solutions with known pH values.
• Titration Indicator: Some applications as an endpoint indicator.
• Standardization of NaOH: Used to standardize sodium hydroxide solutions.
• Quality Control: Ensures acidity standards in industries.
• Education: Commonly used in chemistry teaching.
• Research: Vital in various research applications.
• Laboratory Reagent: Versatile for chemical analysis.
• Drying Agent: Can remove moisture from solvents.

Minimum Assay: <99.5%
Molecular Formula: C8H5KO4
Molecular Weight: 204.22 g/mol
Solubility in water (% weight): 80 g/L at 20 °C
Melting Point: 295-300 °C
Density (g/cm3): 1.64
Insoluble matter: 0.003%
Loss on drying at 110 °C: 0.2%
Chloride (Cl): 0.0015%
Phthalic acid: <0.005%
Sulphate (SO4): 0.003%
Copper (Cu): <0.0004%
Iron (Fe): <0.0005%
Sodium (Na): <0.0099

Cas Number: 877-24-7

Einecs Number: 212-889-4

HS Code / Commodity Code: 2917399000

Hazard Phrases: H0001