Product
Name:Potassium hydrogen phthalate
Molecular formula:C8H5O4K
Molecular weight: 204.22 
CAS:877-24-7
 
Properties
Melting point: 295-300ºC
Boiling point: 378.3°C
Flash point:196.7°C
Water solution: 80 g/L

Specification
Items                            Specification
Assay,%                          99.8 Min
PH                               3.8-4.2
Clarity test/number                4 Max
Insoluble matter,%                 0.005 Max
Loss on drying,%                 0.05 Max
Chloride(Cl),%                     0.002 Max
Sodium(Na),%                     0.01 Max
Iron(Fe),%                        0.0005 Max
Ammonia(NH4),%                  0.005 Max
Nitrogen(N),%                     0.006 Max
Heavy metal(Pb),%                0.0005 Max

Usage  
Used in analytical reagent

Packaging
25kg/fiber drum or 25kg/bag

Sorage & Handing
Do not store in direct sunlight.Store in a tightly closed container. 
Store in a cool,dry,well-ventilated area away from incompatible substances.