Potassium hydrogen phthalate 99.95-100.05% ACS primary standard

Supplier: Thermo Scientific Chemicals
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033351-30 033351-A1
AA33351-30EA 111.44 USD
AA33351-30 AA33351-A1
Potassium hydrogen phthalate 99.95-100.05% ACS primary standard
Potassium hydrogen phthalate

As a primary standard for preparing volumetric alkali solutions and as a buffer in pH determinations


Purity: 99.95-100.05 CAS No.: 877-24-7 Molecular Formula: C8H5KO4 Formula Weight: 204.23 Physical Form: Crystalline powder Density: 1.636 Appearance: White Odor: Odorless Melting Point: 297° dec. Beilstein Reference: 3637128 Merck Reference: 14,7612 MDL No.: MFCD00013070


As a primary standard for preparing volumetric alkali solutions and as a buffer in pH determinations

Formula: HOOCC₆H₄COOK
Melting Pt: 297 °C (dec.)
Density: 1.6362 g/cm³ (20 °C)
Storage Temperature: Ambient
MDL Number: MFCD00013070
CAS Number: 877-24-7
EINECS: 212-889-4
Merck Index: 13,07694
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Specification Test Results

Insoluble matter 0.005
pH of a 0.05M solution 4.0 at 25°
Cl 0.003%
S 0.002%
Heavy Metals (as Pb) 5 ppm
Fe 5 ppm
NA 0.00005

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