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Barium Nitrite

Barium nitrite represented by the chemical formula Ba(NO2)2 or BaN2O4 [2] that bears the IUPAC name barium dinitride [3] is a white crystalline powder that is soluble in water and alcohol [6]. It is a barium salt and an ionic compound [2].

Barium Nitrite Identification

CAS Number 13465-94-6 [1]
PubChem CID 166820 [2]
ChemSpider ID 145952 [3]
EC Number 236-709-9 [1]

Barium Nitrite Formula

How to Make It

Barium nitrite can be prepared by decomposing silver nitrite by barium chloride [4].

2AgNO2 + BaCl2 = 2AgCl + Ba(NO2)2

It can also be made by pouring a warm solution of barium nitrate over lead and boiling the mixture for 1.5 to 2 hours [7].

Ba(NO3)2 + 2Pb = Ba(NO2)2 + 2PbO

Properties and Characteristics of Barium Nitrite

General Properties

Molar mass/molecular weight 229.337 g/mol [2]

Physical Properties

Color/appearance White crystals [1]
Melting point/freezing point 115°C, 239°F [1]
Boiling point N/A [1]
Density 3.173 g cm-3 [1]
State of matter at room temperature (normal phase) Solid [1]

Chemical Properties

Solubility in water 630 g/l (at 20oC) [1]
pH >7 (basic) [5]

Atomic Properties

Crystal structure Hexagonal [6]

Barium Nitrite Structure

Barium Nitrite Uses

  1. In research work in laboratories, in diazotization [1, 6].
  2. As a corrosion inhibitor [6].
  3. In making explosives [6].

Is It Dangerous

The compound can be highly toxic if swallowed or inhaled [2].

References:

  1. Barium Nitrite – Americanelements.com
  2. Barium Nitrite – Pubchem.ncbi.nlm.nih.gov
  3. Barium Nitrite – Chemspider.com
  4. Barium Nitrite, Ba(NO2)2Barium.atomistry.com
  5. Basic anions none think about why 1 anions of weak – Coursehero.com
  6. Barium Nitrite – Chemicalbook.com
  7. Preparation of barium nitrite – Prepchem.com

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