应用
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.

Grade Specifications
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%

备注
Incompatible with strong oxidizing agents.

基本信息

MDL
MFCD00013070

EINECS
212-889-4

分子式
C₈H₅KO₄

分子量
204.23

熔点
297° dec.

密度
1.636

灵敏度
Ambient temperatures.

形态
White crystalline powder

溶解性
Soluble in water. Slightly soluble in alcohol.

Beilstein
3637128

Merck
14,7612

GHS危害和防范说明

Hazard Statements
H303
May be harmful if swallowed.

安全信息

RTECS
CZ4326000

TSCA
是