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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2119756Generated: November 2, 2026

Ammonia → L-Aspartic Acid

https://huagongshe.com/reaction/2119756

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAmmoniaHCID 222—
ReactantMaleic AnhydrideHCID 7923—
ReactantAmmonium HydroxideHCID 14923—
ReactantMaleic AcidHCID 444266—
SolventWaterHCID 962—
ProductL-Aspartic AcidHCID 5960—

Reaction Steps

In a 250 ml reagent bottle, an amount of 69 ml (0.11 mole) of a 10% solution of concentrated ammonium hydroxide (15.9 M) was slowly added with smooth stirring to 9.8 g (0.1 mole) of maleic anhydride in 18 ml (1 mole) of water at 60° C. The bottle was capped and the solution allowed to react for 2 hours. The anhydride converted to maleic acid in the presence of the water, and the ammonia added across the double bond of maleic acid to form aspartic acid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06686440B2
Source datasetuspto-grants-2004_02
ORD IDord-4fe05216fb7e4aea981a01da89645166
Source noteuspto-grants-2004_02