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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1726822Generated: November 2, 2026

Benzidine dihydrochloride → Benzidine

https://huagongshe.com/reaction/1726822

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzidine dihydrochlorideHCID 10754—
ReactantSodium NitriteHCID 23668193—
SolventHydrochloric AcidHCID 313—
ProductBenzidineHCID 7111—

Reaction Steps

Benzidine.2HCl (26 mg) was dissolved in 4.5 ml 0.2N HCl, added with 18 mg NaNO2 dissolved in 0.5 ml distilled water. The reaction was carried out in an ice bath under stirring for 1 hr; an orange colour immediately developed.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07494589B2
Source datasetuspto-grants-2009_02
ORD IDord-171732348a0047c8bf0b41029dd8dc87
Source noteuspto-grants-2009_02