Specification :

Chemical Name:p-hydroxybenzoic acid

Structural Formula
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.
Quality Specification
Item Specification
Polymer Grade Technical Grade
Appearance white crystal powder white crystal powder
Purity(on dry base) % e 99.6 99.0
Melting Point  214-217 212-216
Odor odorless odorless
Solubility Clear and transparent clear and transparent
Loss on Drying % d 0.20 0.50
Color(Pt-Co) d 10 40
Ash % d 0.02 0.15
Sulfate(SO42-) d 0.01 0.05
Chloride(Cl-) % d 0.005 0.02
Phenol % d 0.01 0.10
Salicylic Acid % d 0.02 0.10
4-Hydroxyisophthalic Acid(HIPA) ppm d 500 /
Insolubles in Methanol ppm d 50 /
Potassium(K+) ppm 5 /
Sodium (Na+) ppm d 5 /
Iron (Fe) ppm d 5 /
Ca2++Mg2+ppm d 5 /
Usage: This product could be used an intermediate of antiseptics, dyestuff, medicine and injection molding. Nipagins could be gained by its esterfication with alcohol. It is also the main raw material for liquid crystal polymer and material for pesticide intermediates.
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.