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| MolarMass = 229.34 g/mol |
| MolarMass = 229.34 g/mol |
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| Appearance = white (anhydrous)<ref name=handbook>{{Cite book |last=Perry |first=Dale L. |url=https://books.google.com/books?id=SFD30BvPBhoC |title=Handbook of Inorganic Compounds |date=2016-04-19 |publisher=CRC Press |isbn=978-1-4398-1462-8 |page=54 |language=en}}</ref><br/>white to yellowish (monohydrate)<ref name=handbook></ref> |
| Appearance = white (anhydrous)<ref name=handbook>{{Cite book |last=Perry |first=Dale L. |url=https://books.google.com/books?id=SFD30BvPBhoC |title=Handbook of Inorganic Compounds |date=2016-04-19 |publisher=CRC Press |isbn=978-1-4398-1462-8 |page=54 |language=en}}</ref><br/>white to yellowish (monohydrate)<ref name=handbook></ref> |
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| Density = 3.234 (anhydrous)<ref name=handbook></ref><br/>3.173 (monohydrate)<ref name=handbook></ref> |
| Density = 3.234 (anhydrous)<ref name=handbook></ref><br/>3.173 (monohydrate)<ref name=handbook></ref> |
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| MeltingPt = 267 °C (anhydrous)<ref name=handbook></ref><p>217 °C ”decomposes”<ref name=handbook></ref> (monohydrate)</p> |
| MeltingPt = 267 °C (anhydrous)<ref name=handbook></ref><p>217 °C ”decomposes”<ref name=handbook></ref> (monohydrate)</p> |
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| Solubility = ”anhydrous”<br/>675 g/L (20 °C)<ref name=handbook></ref><hr>”monohydrate”<br/>548 g/L (0 °C)<ref name=handbook></ref><br/>3190 g/L (0 °C)<ref name=handbook></ref> |
| Solubility = ”anhydrous”<br/>675 g/L (20 °C)<ref name=handbook></ref><hr>”monohydrate”<br/>548 g/L (0 °C)<ref name=handbook></ref><br/>3190 g/L (0 °C)<ref name=handbook></ref> |
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Latest revision as of 17:08, 9 December 2025
| Names | |
|---|---|
| Preferred IUPAC name | |
| Identifiers | |
| ChemSpider | |
| ECHA InfoCard | 100.033.358 |
| EC Number | |
| UNII | |
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| Properties | |
| Ba(NO2)2 | |
| Molar mass | 229.34 g/mol |
| Appearance | white (anhydrous)[1] white to yellowish (monohydrate)[1] |
| Density | 3.234 g/cm3 (anhydrous)[1] 3.173 g/cm3 (monohydrate)[1] |
| Melting point | 267 °C (anhydrous)[1]
217 °C decomposes[1] (monohydrate) |
| anhydrous 675 g/L (20 °C)[1] |
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| Solubility | anhydrous slightly soluble in ethanol[1] monohydrate |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
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Main hazards |
Toxic |
| GHS labelling: | |
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| Warning | |
| H302, H332 | |
| P261, P264, P270, P271, P301+P317, P304+P340, P317, P330, P501 | |
| Related compounds | |
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Related compounds |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Chemical compound
Barium nitrite is a chemical compound with the formula Ba(NO2)2, the nitrous acid salt of barium. It is a water-soluble white to yellowish powder.[1] It is used to prepare other metal nitrites, such as lithium nitrite.
Barium nitrite can be prepared by reacting barium nitrate with lead metal sponge, or by reaction of lead nitrite with barium chloride.[2]
The monohydrate can be crystallized from a stoichiometric solution of barium chloride and sodium nitrite.[1]
