'''Oronitrat''' adalah sebuah [[oksoanion]] tetrahedral dari nitrogen dengan rumus {{chem|NO|4|3−}}. Ia pertama kali diidentifikasi pada 1977<ref name=origin>{{cite journal|last1=Jansen|first1=Martin|title=Detection of an Orthonitrate by Vibrational Spectroscopy: Na<sub>3</sub>NO<sub>4</sub>|journal=Angewandte Chemie International Edition in English|date=August 1977|volume=16|issue=8|pages=534–535|doi=10.1002/anie.197705341}}</ref> anddan issaat currentlyini knownhanay in onlydiketahui twodua compoundssenyawa, sodiumnatrium orthonitrateortonitrat (Na<sub>3</sub>NO<sub>4</sub>) anddan potassiumkalium orthonitrateortonitrat (K<sub>3</sub>NO<sub>4</sub>). TheseIni candapat bedibuat preparedmelalui byfusi fusionnitrat ofdan theoksida nitratelogam andpada metalsuhu oxide under high temperaturestinggi<ref name=":0">{{cite journal|title=Crystal Structure of Na<sub>3</sub>NO<sub>4</sub>|journal=Angewandte Chemie International Edition in English|date=1979-08-31|volume=18|issue=9|pages=698–699|doi=10.1002/anie.197906982|last=Jansen|first=Martin}}</ref> anddan tekanan ideallytinggi highyang pressuresideal (severalbeberapa [[Pascal (unit)|GPa]]).<ref>{{cite journal|last1=Quesada Cabrera|first1=R.|last2=Sella|first2=A.|last3=Bailey|first3=E.|last4=Leynaud|first4=O.|last5=McMillan|first5=P.F.|title=High-pressure synthesis and structural behavior of sodium orthonitrate Na<sub>3</sub>NO<sub>4</sub>|journal=Journal of Solid State Chemistry|date=April 2011|volume=184|issue=4|pages=915–920|doi=10.1016/j.jssc.2011.02.013}}</ref>
