Hydrochloric Acid → Terephthalic Acid

HRID 382848

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+].Cl>>[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

Reactant 2

HCID 313Hydrochloric Acid

HCID 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 hydrochloric acid and incessantly until the pH of reaction solution was 4.0. As a result of monitoring by SEM the particle of terephthalic acid formed from said neutralization process, its particle size (5 to 15 μm) was very small.

Sources & evidence

ORD record: ord-01e9250795a84098a495d9a04611ca67
Source dataset: uspto-grants-2001_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06310239B1

Linked notes

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