18810-58-7

Basic information

• Product Name: BARIUM AZIDE
• Synonyms: BARIUM AZIDE;Barium azide(dry or containing less than 50％ water);bariumazide(ba(n3)2);BARIUM AZIDE, 99.5%;Barium diazide
• CAS NO: 18810-58-7
• Molecular Formula: BaN6
• Molecular Weight: 221.37
• EINECS: 242-594-6
• Product Categories: Pharmaceutical Intermediates
• Mol File: 18810-58-7.mol
• Article Data: 8

Chemical Properties

• Melting Point: 120°C
• Boiling Point: °Cat760mmHg
• Flash Point: °C
• Appearance: /monoclinic crystals
• Density: 2.936
• Water Solubility: g/100g H2O: 12.5 (0°C), 16.1 (10°C), 17.4 (20°C) [LAN05]; alcohol 0.17 (16°C), insoluble ether [CRC10]
• CAS DataBase Reference: BARIUM AZIDE(CAS DataBase Reference)
• NIST Chemistry Reference: BARIUM AZIDE(18810-58-7)
• EPA Substance Registry System: BARIUM AZIDE(18810-58-7)

Safety Data

• Statements: 20/22
• Safety Statements: 28
• RIDADR: 224
• HazardClass: 1.1A
• PackingGroup: I
• Hazardous Substances Data: 18810-58-7(Hazardous Substances Data)

Usage

Description

Barium azide, is a crystalline solid with not less than 50% water by mass that explodes when shocked or heated. Barium azide decomposes and gives off nitrogen at 240°F (115.5°C) and is soluble in water. The four-digit UN identification number for barium azide is 1571. Its primary use is in high explosives.

Chemical Properties

Barium azide is a flammable, crystalline solid which can be used or transported in solution.

Physical properties

Colorless monoclinic crystal; density 2.936 g/cm3; decomposes at 120°C; soluble in water, slightly soluble in ethanol.

Uses

High explosives.

Preparation

Barium azide may be prepared by reacting sodium azide with a soluble barium salt. The solution is concentrated to allow crystals grow. Crystals will explode if fully dried, or subject to friction. Product should be stored damp with ethanol.

General Description

A slurry of white crystals. When dry, a high explosive that easily ignited and quick to burn vigorously. Wetting reduces sensitivity to shock and heat. Generates toxic oxides of nitrogen when burned.

Air & Water Reactions

Highly flammable. Soluble in water.

Reactivity Profile

BARIUM AZIDE is a suspension or slurry of of an unstable solid in sufficient water to allow safe shipping and handling. May explode if allowed to dry out and then heated or shocked. Incompatible with strong oxidizing agents, strong reducing agents.

Hazard

Explodes when shocked or heated.

Health Hazard

Some are toxic and may be fatal if inhaled, swallowed or absorbed through skin. Contact may cause burns to skin and eyes. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause pollution.

Safety Profile

A poison. Moderate explosion hazard when shocked or heated to 275'. Spontaneously flammable in air. Very unstable. When heated to decomposition it emits toxic fumes of NO,. See also BARIUM COWOUNDS (soluble) and AZIDES.

Potential Exposure

Barium Azide is used in high explosives.

Shipping

UN1571 Barium azide wetted with not ,50% water, by mass, Hazard Class: 4.1; Labels: 4.1—Flammable solid, 6.1—Poisonous materials. UN0224 Barium Azide dry or wetted with ,50% water, by mass, Hazard Class: 1.1A; Labels: 1.1A—Explosive (with a mass explosion hazard); A—Substances which are expected to mass detonate very soon after fire reaches them. Packing Group 1.

Incompatibilities

Carbon disulfide. It can explode when heated or shocked.

InChI:InChI=1/Ba.2N3/c;2*1-3-2/q+2;2*-1

Upstream product

• 16961-83-4 fluorosilicic acid 
• 7664-93-9 sulfuric acid 
• 144-62-7 oxalic acid 
• 20762-60-1 potassium azide 
• 10024-97-2 dinitrogen monoxide 
• 7782-79-8 hydrogen azide 
• 7727-37-9 nitrogen 
• 7440-39-3 barium 
• 916329-38-9 hydrogen azide 
• 109-95-5 ethyl nitrite 
• 302-01-2 hydrazine 

Downstream Products

• 7782-79-8 hydrogen azide 
• 39108-12-8 magnesium diazide 
• 21109-95-5 barium sulfide 

Relevant articles and documents

Electronic and ionic conductivity in alkaline earth diazenides M AEN2 (MAE = Ca, Sr, Ba) and in Li 2N2

Electrical conductivity measurements of alkaline earth diazenides SrN 2 and BaN2 revealed temperature-dependent metal-like behavior. As CaN2 is isotypic with SrN2 its electronic properties are supposed to show similar characteristics. For the alkali diazenide Li2N2, the corresponding measurement shows not only the typical characteristics of metallic materials but also an unexpected rise in electrical conductivity above 250 K, which is consistent with an ionic contribution. This interpretation is further corroborated by static 6Li and 7Li nuclear magnetic resonance measurements (NMR) of the spin-lattice relaxation time (T1) over an extended temperature range from 50 to 425 K. We observe a constant Heitler-Teller product (T 1T) as expected for metals at low temperatures and a maximum in the temperature-dependent relaxation rates, which reflects the suggested ionic conductivity. A topological structural analysis indicates possible 3D ion migration pathways between two of the three crystallographic independent Li positions. A crude estimate of temperature-dependent self-diffusion coefficients D(T) of the lithium motion classifies Li2N2 as a mixed electronic/ionic conductor.

Preparation and crystal structure of Ba2NF

Single crystalline Ba2NF was prepared by heating a mixture of KCuF3 and Ba metal to 900°C under dynamic flow of N2, followed by slow cooling from the melt. Crystals of Ba2NF were dark violet in color and very air sensitive. X-ray diffraction experiments revealed that Ba2NF is isostructural with rocksalt-type BaO, and has space group Fm-3m (No. 225) with cell parameter of a=5.6796(19)A, Z=2. X-ray data was collected on a Bruker SMART APEX 4k CCD Single Crystal Diffractometer at 100K, using Mo(Kα) radiation. Structure refinement was carried out by full-matrix least squares on F2 on all data, to give R1=0.0194 (all data) and wR2=0.0433 for 3 parameters and 23 independent reflections. The final position assignments were analyzed via bond valence sum calculations.

BaP6N10NH:Eu2+ as a Case Study–An Imidonitridophosphate Showing Luminescence

Barium imidonitridophosphate BaP6N10NH was synthesized at 5 GPa and 1000 °C with a high-pressure high-temperature approach using the multianvil technique. Ba(N3)2, P3N5 and NH4Cl were used as starting materials, applying a combination of azide and mineralizer routes. The structure elucidation of BaP6N10NH (P63, a=7.5633(11), c=8.512(2) ?, Z=2) was performed by a combination of transmission electron microscopy and single-crystal diffraction with microfocused synchrotron radiation. Phase purity was verified by Rietveld refinement. 1H and 31P solid-state NMR and FTIR spectroscopy are consistent with the structure model. The chemical composition was confirmed by energy-dispersive X-ray spectroscopy and CHNS analyses. Eu2+-doped samples of BaP6N10NH show blue emission upon excitation with UV to blue light (λem=460 nm, fwhm=2423 cm?1) representing unprecedented Eu2+-luminescence of an imidonitride.

Ba3P5N10Br:Eu2+: A natural-white-light single emitter with a zeolite structure type

Illumination sources based on phosphor-converted light emitting diode (pcLED) technology are nowadays of great relevance. In particular, illumination-grade pcLEDs are attracting increasing attention. Regarding this, the application of a single warm-white-emitting phosphor could be of great advantage. Herein, we report the synthesis of a novel nitrido-phosphate zeolite Ba3P5N10Br:Eu2+. Upon excitation by near-UV light, natural-white-light luminescence was detected. The synthesis of Ba3P5N10Br:Eu2+ was carried out using the multianvil technique. The crystal structure of Ba3P5N10Br:Eu2+ was solved and refined by single-crystal X-ray diffraction analysis and confirmed by Rietveld refinement and FTIR spectroscopy. Furthermore, spectroscopic luminescence measurements were performed. Through the synthesis of Ba3P5N10Br:Eu2+, we have shown the great potential of nitridophosphate zeolites to serve as high-performance luminescence materials.