Sodium Hydroxide → Disodium

HRID 651921Notes

Reaction equation

HRID 651921 reaction equation
[C:1]1([S:15]([O-:18])(=[O:17])=[O:16])[C:10]2[CH:9]=[CH:8][CH:7]=[C:6]([S:11]([O-:14])(=[O:13])=[O:12])[C:5]=2[CH:4]=[CH:3][CH:2]=1.[Na+:19].[Na+:20].[OH-].[Na+]>>[C:1]1([S:15]([O-:18])(=[O:17])=[O:16])[C:10]2[CH:9]=[CH:8][CH:7]=[C:6]([S:11]([OH:14])(=[O:13])=[O:12])[C:5]=2[CH:4]=[CH:3][CH:2]=1.[Na+:19].[Na:19][Na:20]

Participants

4

Reactant 2

HCID 14798Sodium HydroxideHCID 74248Disodium 1,5-naphthalenedisulfonate

Product 2

HCID 141233DisodiumHCID 236784051,5-Naphthalenedisulfonic acid, sodium salt (1:?)

Procedure

The bipolar membrane prepared in this manner was used for the electrodialysis as described in Example 2, the apparatus being shown in FIG. 2. Electrodialysis was carried out for 10 hours at room temperature and at a current density of 2.9 A/cm2. 200 parts of an aqueous 0.25 molar solution of disodium naphthalene-1,5-disulfonate were used in compartment (9), and 100 parts of 0.5% strength sodium hydroxide solution were employed in compartment (8). 1937 parts of a 0.24 molar solution of monosodium naphthalene-1,5-disulfonate (0.02 mole/kg of the disodium salt, current efficiency 50%) were obtained in compartment (9), and about 1000 parts of 2.2% strength Sodium hydroxide solution were obtained in compartment (8).

Workup

  1. customThe bipolar membrane prepared in this manner

Sources & evidence

ORD record
ord-6f2498d433eb4c30a2db91c15c3aa46e
Source dataset
uspto-grants-1987_06
Patent number
US04670125

Reaction notes

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