Sulfuric Acid → Terephthalic Acid

HRID 378591

Reaction equation

HRID 378591 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 (4), was transferred to neutralization tank (5). Then, the solution was stirred by agitator (5a) in neutralization tank and added slowly with 97% sulfuric acid and incessantly until the pH of solution became 4.0. As a result of monitoring by SEM, the particle size of terephthalic acid formed from said neutralization process, its particle size (10 to 20 μm) was very small.

Workup

  1. customAs a result of monitoring by SEM

Sources & evidence

ORD record
ord-3d2ddf4790214378ae5aed4449de56f1
Source dataset
uspto-grants-2000_02
Patent number
US06031128

Linked notes

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