Nitric Acid → 4-Sulfobenzenediazonium hydroxide

HRID 1872100Notes

Reaction equation

HRID 1872100 reaction equation
[S:1]([OH:11])(=[O:10])([C:3]1[CH:8]=[CH:7][C:6]([NH2:9])=[CH:5][CH:4]=1)=[O:2].[N+:12]([O-])(O)=O.N([O-])=O.[Na+]>O>[OH-:2].[S:1]([C:3]1[CH:4]=[CH:5][C:6]([N+:9]#[N:12])=[CH:7][CH:8]=1)([OH:11])(=[O:10])=[O:2]

Participants

5

Reactant 3

HCID 944Nitric AcidHCID 8479Sulfanilic acidHCID 23668193Sodium Nitrite

Product 1

HCID 227152964-Sulfobenzenediazonium hydroxide

Reagents, catalysts & solvents 1

HCID 962WaterSolvent2×

Procedure

Two hundred grams of CB-A was added to a solution of 10.1 g sulfanilic acid and 6.23 g of concentrated nitric acid in 21 g of water. A solution of 4.87 g of NaNO2 in 10 g of water was added to the rapidly stirring mixture. 4-Sulfobenzenediazonium hydroxide inner salt is formed in situ, which reacts with the carbon black. After 15 minutes, the dispersion was dried in an oven at 125° C.

Sources & evidence

ORD record
ord-992a1b5a67a946688286c08c247b67b0
Source dataset
uspto-grants-2000_08
Patent number
US06107350

Reaction notes

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