Dithionite → Dithionite

HRID 1762394

Reaction equation

HRID 1762394 reaction equation
[CH3:1][N+:2]1[CH:3]=[CH:4][C:5]([C:8]2[CH:9]=[CH:10][N+:11]([CH3:14])=[CH:12][CH:13]=2)=[CH:6][CH:7]=1.[Cl:15]Cl.[S:17]([S:20]([O-:22])=[O:21])([O-:19])=[O:18].[Na+].[Na+].[OH-].[Na+].S(S([O-])=O)([O-])=O>O>[S:17]([S:20]([O-:22])=[O:21])([O-:19])=[O:18].[CH3:14][N+:11]1[CH:10]=[CH:9][C:8]([C:5]2[CH:4]=[CH:3][N+:2]([CH3:1])=[CH:7][CH:6]=2)=[CH:13][CH:12]=1.[Cl-:15].[Cl-:15]

Participants

7

Reactant 4

HCID 1086DithioniteHCID 14798Sodium HydroxideHCID 24489Sodium DithioniteHCID 86743050paraquat Cl2

Product 2

HCID 1086DithioniteHCID 15938Paraquat dichloride

Reagents, catalysts & solvents 1

HCID 962WaterSolvent3×

Procedure

The solubility rate and the paraquat-Cl2 analysis were determined as follows. A hydrosulfite solution is prepared from 5.00 g sodium hydrosulfite, 2.00 g sodium hydroxide, and 93.00 g DI water. 1.00 g of dry product is dissolved in 999.0 g STW water and 1 ml samples are taken at 1, 2, 5, and 10 minutes. 1 ml sample is added to 98.0 g STW water and mixed. Then 1 ml hydrosulfite solution is added and mixed. Absorbance is read at 394 nm using a Pye Unicam Spectrophotometer SP1750. Absorbance of the test sample is matched with absorbance on control graph to give % Paraquat dichloride.

Workup

  1. customare taken at 1, 2, 5, and 10 minutes
  2. additionmixed
  3. additionmixed

Sources & evidence

ORD record
ord-a1ac4186dc854cd2ade0d88b79ac6018
Source dataset
uspto-grants-1989_05
Patent number
US04832730

Linked notes

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