Hydrochloric Acid → Benzenediazonium, 4-sulfo-, chloride

HRID 231741Notes

Reaction equation

HRID 231741 reaction equation
C(=O)([O-])[O-].[Na+].[Na+].[S:7]([OH:17])(=[O:16])([C:9]1[CH:14]=[CH:13][C:12]([NH2:15])=[CH:11][CH:10]=1)=[O:8].[N:18]([O-])=O.[Na+].[ClH:22]>O>[Cl-:22].[S:7]([C:9]1[CH:10]=[CH:11][C:12]([N+:15]#[N:18])=[CH:13][CH:14]=1)([OH:17])(=[O:16])=[O:8]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 8479Sulfanilic acidHCID 10340Sodium CarbonateHCID 23668193Sodium Nitrite

Product 1

HCID 11321986Benzenediazonium, 4-sulfo-, chloride

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A solution of 0.78 g of sodium carbonate and 2.55 g of sulfanilic acid in 55 ml of water was cooled to 0° C., and 6 ml of an aqueous solution containing 1.11 g of sodium nitrite was added. Further, 15 ml of cold 2N-HCl was added while maintaining the temperature in the range of 0° to 5° C., to form p-sulfophenyldiazonium chloride. Starch iodide paper was used in recognizing the end of reaction.

Workup

  1. additionwas added
  2. temperaturewhile maintaining the temperature in the range of 0° to 5° C.

Sources & evidence

ORD record
ord-a655e2cbacf4434f8f135ea87bde2c13
Source dataset
uspto-grants-1989_07
Patent number
US04849136

Reaction notes

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