Potassium hydrogen phthalate CAS 877-24-7
Potassium hydrogen phthalate white crystals. The relative density is 1.636. Dissolve in approximately 12 parts of cold water and 3 parts of boiling water; Slightly soluble in ethanol. The pH of a 0.05M aqueous solution at 25 ℃ is 4.005. Decompose at 295-300 ℃.
| Item | Specification |
| Boiling point | 98.5-99.5 ;°C/740 ;mmHg(lit .) |
| Density | 1.006 g/mL at 20 °C |
| Melting point | 295-300 °C (dec.) (lit.) |
| PH | 4.00-4.02 (25.0℃±0.2℃, 0.05M) |
| resistivity | H2O：100 mg/mL |
| Storage conditions | Store at +5°C to +30°C. |
Potassium hydrogen phthalate is commonly used for the calibration of sodium hydroxide standard solutions due to its ease of obtaining pure products through recrystallization, absence of crystallization water, non hygroscopicity, easy storage, and high equivalence; It can also be used for calibration of acetic acid solution with perchloric acid (using methyl violet as an indicator).
Usually packed in 25kg/drum,and also can be do customized package.
Potassium hydrogen phthalate CAS 877-24-7
Potassium hydrogen phthalate CAS 877-24-7
