邻苯二甲酸氢钾

As a primary standard for preparing volumetric alkali solutions and as a buffer in pH determinations. Potassium hydrogen phthalate is used as a primary standard for acid- base titrations as well as for calibrating pH meters. It acts as a buffer in pH determination. It finds application as a useful standard for total organic carbon testing.

Incompatible with strong oxidizing agents.

MFCD00013070

212-889-4

C₈H₅KO₄

204.23

297° dec.

1.636

Ambient temperatures.

White crystalline powder

Soluble in water. Slightly soluble in alcohol.

3637128

14,7612

Maximum level of impurities: Insoluble matter 0.005%, pH of a 0.05M solution 4.0 at 25?, Cl 0.003%, S 0.002%, Heavy Metals (as Pb) 5ppm, Fe 5ppm, Na 0.005%

CZ4326000

是

H303
May be harmful if swallowed.