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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1937061Generated: October 25, 2026

Hydrochloric Acid → Benzenediazonium, 2-nitro-, chloride (1:1)

https://huagongshe.com/reaction/1937061

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant2-NitroanilineHCID 6946—
ReactantSodium NitriteHCID 23668193—
SolventWaterHCID 962—
ProductBenzenediazonium, 2-nitro-, chloride (1:1)HCID 148932359.8%

Reaction Conditions

Temperature65 °C

Reaction Steps

To a 500 mL three-necked flask equipped with a mechanical stirrer are added 60 g of 2-nitroaniline and 134.2 g of concentrated hydrochloric acid. After heating to 65° C., 46 g of water is added after which the reactor is cooled to 0° C. Sodium nitrite (74.2 g, 40% aqueous solution) is slowly added to the slurry while maintaining a temperature of 0° C. The diazonium salt solution is filtered to give 290 g of solution which is stored at −15° C. for later use.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06392056B1
Source datasetuspto-grants-2002_05
ORD IDord-b402fbc5defb491191c25089cd1199e7
Source noteuspto-grants-2002_05