Nomenclature
CAS number: 5972-71-4
Hydroxybutanedioic acid monoammonium salt;
l-malic acid monoammonium salt; ammonium acid malate.
C
4H
9NO
5; mol wt 151.12.
C 31.79%, H 6.00%, N 9.27%, O 52.94%.
NH
4OOCCH
2CH(OH)COOH
or HOOCCH
2CH(OH)COONH
4.
Description and references
Prepn: Kendrick, Ber. 30, 1749 (1897); Holmberg, ibid. 61, 1885 (1928).
Properties
Orthorhombic disphenoidal crystals. mp 160-161°. d 1.15. Sol in 3 parts water; slightly sol
in alcohol. [α]D18 6.4° (c = 6).Status
This monograph has been retired and is no longer subject
to revision or update.