p-Hydroxybenzoic Acid

[C7H4NO3Cl]
  Molecular Formula:C7H6O3

Molecular Weight:138.12

CAS#:99-96-7

Physical & Chemical Properties: This product is white crystal powder without any smell but is astringent. it is easily dissolved in hot water, alcohol, ether, acetone; slightly dissolved in cold water, benzene, and not dissolved in carbon bisulfide. It is dissolved in 125 cold water and relative density is 1.46.


Item
Polymer Grade
Technical Grade
Appearance
white crystal powder
white crystal powder
Purity(on dry base) %
99.5
99.0
Melting Point
214-217
213-216
Odor
odorless
odorless
Solubility
Clear and transparent
clear and transparent
Loss on Drying %
0.20
0.50
Color(Pt-Co)
15
40
Ash %
0.02
0.15
Sulfate(SO42-)
0.01
0.05
Chloride(Cl-) %
0.005
0.02
Phenol %
0.01
0.10
Salicylic Acid %
0.02
0.10
4-Hydroxyisophthalic Acid(HIPA) ppm
500
/
Insolubles in Methanol ppm
50
/
Potassium(K+) ppm
10
/
Sodium (Na+) ppm
10
/
Iron (Fe) ppm
10
/
Ca2++Mg2+ppm
10
/

Package: It is packed with braided plastic bags within double PE linings. Each has net weight of 25 kg. Those packed with PP bag has its net weight of 500 kg/b or 1000 kg/b.