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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1576146Generated: October 26, 2026

Sulfuric Acid → 7-Amino-1,3-naphthalenedisulfonic acid

https://huagongshe.com/reaction/1576146

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSulfuric AcidHCID 1118—
Reactant2-Amino-1-naphthalenesulfonic acidHCID 6670—
ReactantSulfur trioxideHCID 24682—
Product7-Amino-1,3-naphthalenedisulfonic acidHCID 6851—
Product6-Aminonaphthalene-1,3,5-trisulphonic acidHCID 6453197—

Reaction Steps

We have now discovered that addition of sulfur trioxide to Tobias Acid in hot 100% sulfuric acid provides both 2-amino-1,5,7-naphthalenetrisulfonic acid and Amino G Acid. Separation of Amino G Acid and hydrolysis of the trisulfonic acid provides Amino J Acid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS03979445
Source datasetuspto-grants-1976_09
ORD IDord-7cad48ce5758455a8f4116606f5befc3
Source noteuspto-grants-1976_09