Sodium Azide

[26628-22-8] N3Na (MW 65.02) InChI = 1S/N3.Na/c1-3-2;/q-1;+1 InChIKey = PXIPVTKHYLBLMZ-UHFFFAOYSA-N (nucleophilic azide source for organoazide preparation;2 precursor to reagents such as hydrazoic acid,3 halogen azides,4 trimethylsilyl azide,5 tosyl azide,6 and diphenyl phosphorazidate7) Physical Data: dec ca. 300 °C; d 1.850 g cm−3. Solubility: sol water (39 g/100 g at 0 °C, 55 g/100 g 100 °C); slightly sol alcohol; insol ether. Form Supplied in: white solid; widely available. Handling, Storage, and Precautions: while relatively insensitive to impact, the solid can decompose explosively above its melting point. It forms highly explosive azides with metals such as Cu, Pb, Hg, Ag, Au, their alloys and compounds, and reacts with acids to form hydrazoic acid (HN3) which is a toxic, spontaneously explosive gas. Explosive gem-diazides can be formed in CH2Cl2 or other chlorinated solvents and shock or heat sensitive metal azidothioformates in CS2. All work with NaN3 and other azides should be conducted on a very small scale behind a shield, in a fume hood. Excess NaN3 on flasks, paper, etc. can be destroyed in a fume hood by soaking with acidified Sodium Nitrite or by oxidation with Cerium (IV) Ammonium Nitrate.8