substance
Sodium nitrate
- Formula
- NaNO3
- CAS
- 7631-99-4
- InChIKey
- VWDWKYIASSYTQR-UHFFFAOYSA-N
- ChEBI
- CHEBI:63005
Made by
- Sodium nitrite from ammonia oxidation and soda absorption (with sodium nitrate by inversion)Co-productConcept · not reviewed
Used by
No process in the Atlas uses this yet.
When a process with this chemical is added to the library, it appears here.
Takes part in
- 3NaNO2+2HNO3gives3NaNO3+2NO+H2OProduct · Inversion of sodium nitrite to sodium nitrate with nitric acid · one process
- Na2CO3+2HNO3gives2NaNO3+CO2+H2OProduct · Neutralisation of the residual carbonate with nitric acid · one process
- Na2CO3+2NO2givesNaNO2+NaNO3+CO2Product · Absorption of excess NO2 in soda solution to nitrite and nitrate (side reaction) · one process
Routes compared
One route in the Atlas makes Sodium nitrate: nothing to compare yet. A comparison appears when a second route is added.
Per 1 kg of Sodium nitrate: inventory from each route's LCI dataset, unallocated; footprints per the functional unit of their own LCA.
| Route | Tier, design maturity, review status | Geography, year | Energy | Feedstocks | Key emissions | Footprint | Comparability |
|---|---|---|---|---|---|---|---|
| Sodium nitrite from ammonia oxidation and soda absorption (with sodium nitrate by inversion)Ammonia oxidation over Pt/Rh gauze near atmospheric pressure with waste heat boiler, NOx absorption in 20 wt-% soda solution, double-effect evaporation, NaNO2 vacuum crystallisation, centrifuging and drying, inversion of the mother-liquor purge with 60 wt-% nitric acid to sodium nitrate; 20 kt/a NaNO2 | flowsheet or hand-writtenDesign maturity: Concept (research)Not independently reviewedDataset review: unreviewed | GLO, 2026 | a co-product of a multi-output dataset (product:NANO2 besides it): its share needs the allocation of the LCI database build | no footprint | – | ||
ISO 14044 requires a critical review (by a panel of interested parties, ISO/TS 14071) of a comparative assertion intended to be disclosed to the public. These routes are listed side by side for screening; a statement that one is better than another needs that review. None of these routes has had such a review.