Sulfuric Acid → Terephthalic Acid

HRID 382849

Reaction equation

HRID 382849 reaction equation
[C:1]([O-:12])(=[O:11])[C:2]1[CH:10]=[CH:9][C:5]([C:6]([O-:8])=[O:7])=[CH:4][CH:3]=1.[Na+].[Na+].S(=O)(=O)(O)O>>[C:1]([OH:12])(=[O:11])[C:2]1[CH:10]=[CH:9][C:5]([C:6]([OH:8])=[O:7])=[CH:4][CH:3]=1

Participants

3

Reactant 2

HCID 1118Sulfuric AcidHCID 82305Disodium terephthalate

Product 1

HCID 7489Terephthalic Acid

Procedure

An aqueous solution of disodium terephthalate, passed through adsorption tower (2), was transferred to neutralization tank (3). Then, the solution was stirred by agitator (3a) in neutralization tank and added slowly with sulfuric acid and incessantly until the pH of reaction solution was 2.0. As a result of monitoring by SEM the particle of terephthalic acid formed from said neutralization process, its particle size (10 to 15 μm) was very small.

Sources & evidence

ORD record
ord-2ee38734cf214764b9207c6eaa3812c6
Source dataset
uspto-grants-2001_10
Patent number
US06310239B1

Linked notes

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