| Classification: | Carboxylic Acid |
|---|---|
| CAS No.: | 100-21-0 |
| Other Names: | Benzene-1,4-dicarboxylic acid; P-Phthelic Acid |
| MF: | C8H6O4 |
| EINECS No.: | |
| Place of Origin: | China (Mainland) |
| Grade Standard: | Industrial Grade |
| Purity: | 99% |
| Appearance: | white |
| Application: | PET and so on |
| Brand Name: | vidar |
| Model Number: |
Quick Details
Specifications
1.SUPPLY 5000MT/Month
2.Good resource from domestic factory
3.Factory price
4.Purified Terephthalic Acid
5.ISO 9001:2008
Purified Terephthalic Acid
Formula: C8H6O4
purity:>99%
Description: White needle crystal or powder
Purified Terephthalic Acid
Formula: C8H6O4
Description: White needle crystal or powder
Uses : As a reagent for alkali in wool , additive to poultry feeds.
Chemical and physical properties
Combustibility: Flammable
Toxicity : Low toxicity
Density : 1.510 g/cm3
Sublimation : 402 °C ( Under natural pressure)
Melting point: 425 °C (in a gland )
Solubility : dissolving in hot grain alcohol , not dissolving in water, aether , glacial acetic acid and chloroform.
PTA Specification:
|
Test Item |
Specification |
|
PTA Content% |
99% |
|
Metal(Fe,Mo,Cr,Ti,Mn,Ni,Co)ppm≤ |
≤4ppm |
|
Moisture %≤ |
≤0.5% |
|
Fe ppm≤ |
2ppm |
|
DMF Chroma.5%Liquor<APHA> |
10 |
|
4-CBA ppm≤ |
≤25ppm |
|
Acid Num(mg KOH/g) |
675±2 |
Package and storage
Storage : Keep container closed when not in use, Store in a cool, dry,well-ventilated area away from strong oxidizing substances.
Package : Pocket by measured or pocket in tank car
Preparation
High temp. oxidation: While acetic acid as solvent, Co,Mn, Br admixture as catalyzer p-xylene will oxidate into crude terephthalic acid <CTA>. Under certain temperature and pressure. Then CTA dissolve into water under high temperature and pressure. And passa Pd/C catalyzer settled vessel which is a reactor where the oxidation production will be hydrogenated in order to removeimpurity(4-CBA).Afterward.the hydrogenation production will become the final production(PTA) after crystallizing filtrating P-Tol acid and drying.