LCP raw material Para Hydroxy Benzoic Acid (PHBA)

　　Chemical name: 4-Hydroxybenzoic acid

　　Molecular formula:C7H6O3

　　Molecular weight:138.12

　　CAS#:99-96-7

　　EINECS No. :202-804-9

　　Molecular weight: 138.13。

　　Density: 1.443g/cm3。

　　Melting point: 213-214℃。

　　Boiling point:336.2°C at 760 mmHg

　　Flash point:171.3°C

　　Physical and chemical properties: white powdery crystal, no odor and taste. Easily soluble in hot water, alcohol, ether, and acetone, slightly soluble in cold water and benzene, insoluble in carbon disulfide.

　　Relative density is 1.46.

　　Quality standard: Q/SH 005-2014

　　Appearance: white crystalline powder

　　Content (dry basis) %≥99.699.0

　　Melting point℃214-217212-216

　　Odor: No odor

　　Solubility:Clear and transparent

　　Drying loss %≤0.20

　　Color (Pt-Co)≤10

　　Ash content %≤0.02

　　Sulfate (SO42-) %≤0.01

　　Chloride (Cl-) %≤0.005

　　Phenol %≤0.01

　　Salicylic acid %≤0.02

　　4-hydroxyisophthalic acid ppm≤500/

　　Methanol-insoluble matters ppm≤50/

　　Potasium (K+) ppm5/

　　Sodium (Na+) ppm≤5/

　　Iron (Fe) ppm≤5/

　　Calcium+Magnesium (Ca2++Mg2+)ppm≤10/

　　Uses: the product can be used as preservative, dye, pharmaceutical and injection intermediate. It is main raw material of liquid crystal polymer and raw material of pesticide intermediate.

　　Packing: double-layer plastic woven bag, net weight is 25kg, or PP bag, net weight is 500kg/bag or 1000kg/bag.

　　*Special requirements can be negotiated

99-96-7