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Unstable and toxic chemical compound
Hydrazoic acid, also known as hydrogen azide or azoimide, is a compound with the chemical formula HN3. It is a colorless, volatile, and explosive liquid
Hydrazoic_acid
Chemical compound
Treatment of sodium azide with strong acids gives hydrazoic acid (hydrogen azide; HN3): H+ + N−3 → HN3 Hydrazoic acid, which is also extremely toxic, is
Sodium_azide
Anion and chemical group (–N3)
the formula N−3 and structure −N=N+=N−. It is the conjugate base of hydrazoic acid HN3. Organic azides are organic compounds with the formula RN3, containing
Azide
One of the lightest perfluoro compounds
basic anions, e.g. azide to give hydrazoic acid. TFA is the precursor to trifluoroacetic anhydride, trifluoroperacetic acid, and 2,2,2-trifluoroethanol. It
Trifluoroacetic_acid
Chemical compound
cyanamide and hydrazoic acid. To avoid direct handling of the problematic hydrazoic acid, a mixture of sodium azide and hydrochloric acid has been used
5-Aminotetrazole
Chemical compound
being surpassed only by hydrazoic acid (97.7%). The production of N5[B(N3)4] requires a multi-step synthesis, first, hydrazoic acid and sodium borohydride
Pentazenium_tetraazidoborate
Chemical reaction between an azide and a carbonyl derivative
azide is produced by reaction of the carboxylic acid with hydrazoic acid via the protonated carboxylic acid, in a process akin to a Fischer esterification
Schmidt_reaction
Graph showing the free energy vs oxidation state of a chemical species
molecular nitrogen (N2). So, in aqueous solution: – under acidic conditions, hydrazoic acid disproportionates as: 9 HN3 + 3 H+ → 12 N2 + 3 NH+4 – under
Frost_diagram
Type of chemical compounds
are exceptions to this rule, e.g. hydrazoic acid, HN3 Binary acids are often contrasted with oxyacids, which are acids that contain oxygen and other compounds
Binary_acid
Chemical compound
preparation of hydrazoic acid. Hippuric acid has also been used in Erlenmeyer–Plöchl synthesis of phenylalanine and other amino acids, the reaction proceeding
Hippuric_acid
Redox reaction whose products have higher and lower oxidation states than the reactant
both nitric acid and nitrous acid, where nitrogen has oxidation states +5 and +3 respectively: 2 NO2 + H2O → HNO3 + HNO2 In hydrazoic acid and sodium azide
Disproportionation
Chemical compound
it is a reagent in organic chemistry, serving as the equivalent of hydrazoic acid. Trimethylsilyl azide is commercially available. It may be prepared
Trimethylsilyl_azide
Cyclic amide
Lactams form by the acid-catalyzed rearrangement of oximes in the Beckmann rearrangement. Lactams form from cyclic ketones and hydrazoic acid in the Schmidt
Lactam
Organic compound or functional group containing a C=N bond
carbon acids with nitroso compounds. The rearrangement of trityl N-haloamines in the Stieglitz rearrangement. By reaction of alkenes with hydrazoic acid in
Imine
Portmanteau name for nitrite derivatives
the hydrazinium cation (N2H5+) the product of nitrite reduction is hydrazoic acid (HN3), an unstable and explosive compound: N2H5+ + HNO2 → HN3 + H2O
Nitrite
Sunken US WWII ship in the Thames, London, England
azide would react with water vapour, rather than liquid water, to form hydrazoic acid, which could react with copper in the detonating cap to form copper
SS_Richard_Montgomery
German chemist (1857–1928)
rearrangement in 1890/1894 and also discovered diazoacetic acid, hydrazine and hydrazoic acid. In 1882 he carried out the first ever peptide synthesis,
Theodor_Curtius
Chemical compound
hydrazoic acid and hydrogen cyanide under pressure. A Pinner reaction of organic nitriles with sodium azide in the presence of a buffered strong acid
Tetrazole
Organic compounds of the form RC(=O)NR′R″
peptide bonds, they link amino acids together to form proteins. Amides can be viewed as a derivative of a carboxylic acid (R−C(=O)−OH) with the hydroxyl
Amide
Chemical compound
cations [N2H5]+ and azide anions [N3]−. It is the hydrazine salt of hydrazoic acid. When very pure, it is insensitive to ordinary levels of shock or impact
Hydrazinium_azide
Chemical compound
chemical compound with the formula [NH4]N3, being the salt of ammonia and hydrazoic acid. Like other inorganic azides, this colourless crystalline salt is a
Ammonium_azide
Substance that can explode
Fulminic acid Halogen azides: Fluorine azide Chlorine azide Bromine azide Iodine azide Hexamethylene triperoxide diamine Hydrazoic acid Hypofluorous acid Lead
Explosive
Chemical compound
ammonia gives sulfate-nitrate aerosols through reactions with sulfuric acid and nitric acid, with ammonium sulfate being prominent in this process due to its
Ammonia
Organic compounds containing the azide (N3) functional group
phenyldiazonium. In the 1890s, Theodor Curtius, who had discovered hydrazoic acid (HN3), described the rearrangement of acyl azides to isocyanates subsequently
Organic_azide
Chemical compound
is hygroscopic, and upon prolonged storage was hydrolyzed to produce hydrazoic acid, which made the material sensitive. Synthesis of the HCl salt has led
Imidazole-1-sulfonyl_azide
Chemical reaction
Curtius, Th. (1890). "Ueber Stickstoffwasserstoffsäure (Azoimid) N3H" [On hydrazoic acid (azoimide) N3H]. Berichte der Deutschen Chemischen Gesellschaft zu Berlin
Curtius_rearrangement
Chemical compound
chemical compound with the formula AgN3. It is a silver(I) salt of hydrazoic acid. It forms colorless crystals. Like most azides, it is a primary explosive
Silver_azide
Chemical compound
azide, Be(N3)2, is an inorganic compound. It is the beryllium analog of hydrazoic acid (HN3). Beryllium azide has been synthesised by the reaction of beryllium
Beryllium_azide
(1864–1931), Italian chemist who studied nitrogen compounds such as hydrazoic acid Octavio Augusto Ceva Antunes (died 2009), Brazilian chemist, consultant
List_of_chemists
Chemical compound
formula Ca(N3)2. It can be obtained from a distilled reaction between hydrazoic acid and calcium hydroxide. Calcium azide is sensitive to impact, in which
Calcium_azide
Chemical compound
an inorganic azide with the formula Ba(N3)2. It is a barium salt of hydrazoic acid. Like all azides, it is explosive. It is less sensitive to mechanical
Barium_azide
Chemical compound
Lithium azide is the lithium salt of hydrazoic acid. It is an unstable and toxic compound that decomposes into lithium and nitrogen when heated. It can
Lithium_azide
Chemical reaction
Oyo Mitsunobu (1934–2003). In a typical procedure, the alcohol, carboxylic acid, and triphenylphosphine are dissolved in tetrahydrofuran or other suitable
Mitsunobu_reaction
Chemical group (–N=C=O)
isocyanates: Schmidt reaction, a reaction where a carboxylic acid is treated with ammonia and hydrazoic acid yielding an isocyanate. Curtius rearrangement degradation
Isocyanate
Chemical compound
Structure and Ionization Energies of Azides: An ab initio Study of Hydrazoic Acid, Methyl Azide and Ethyl Azide". ChemInform. 24 (37): no. doi:10.1002/chin
Ethyl_azide
Chemical compound with hydrogen and pnictogen atoms
(NH), can be classed as a pnictogen hydride. Chemistry portal Ammonium Hydrazoic acid Hydrogen halide Santiago, Régis T.; Haiduke, Roberto L. A. (2018). "Relativistic
Pnictogen_hydride
Chemical compound
with ammonia. At bench scale, the reaction between cyclohexanone with hydrazoic acid to give caprolactam in the Schmidt reaction has been reported. Almost
Caprolactam
Chemical phenomenon within ring systems
via a ketene. At bench scale, the reaction between cyclohexanone with hydrazoic acid gives caprolactam in the Schmidt reaction. In the Baeyer-Villiger oxidation
Ring expansion and contraction
Ring_expansion_and_contraction
Chemical compound
anhydrous calcium chloride or sodium hydroxide to remove contaminating hydrazoic acid. The first synthesis was reported in 1905. Decomposition to a nitrene
Methyl_azide
Pericyclic chemical reaction
the largest negative character at the terminal nitrogen atom, while hydrazoic acid bears the largest negative character at the internal nitrogen atom.
1,3-Dipolar_cycloaddition
Topics referred to by the same term
HN3 may refer to: Tris(2-chloroethyl)amine or HN3, a nitrogen mustard Hydrazoic acid or HN3 This disambiguation page lists articles associated with the same
HN3
Compounds with similar properties to polyatomic halogens
such as cyanogen; pseudohalide anions, such as cyanide ion; inorganic acids, such as hydrogen cyanide; as ligands in coordination complexes, such as
Pseudohalogen
Latin phrase that translates literally to 'on site'
in motibus, vel aliis id genus. Sodium azide and its conjugate acid—hydrazoic acid—are both referred to as azide. Azides are explosophores and respiratory
In_situ
azide and the main group chloride. Another route involves the reactions hydrazoic acid HN3 with main group compounds containing basic ligands (alkyls, alkoxides
Main_group_azido_compounds
Chemical compound
terminal N centers. KN3 is prepared by treating potassium carbonate with hydrazoic acid, which is generated in situ. In contrast, the analogous sodium azide
Potassium_azide
Chemical compound
Theodor (1890). "Ueber Stickstoffwasserstoffsäure (Azoimid) N3H" [On Hydrazoic Acid (Azoimide) N3H]. Berichte der Deutschen Chemischen Gesellschaft (in
Tetranitrogen
Chemical compound
inorganic compound with the formula RbN3. It is the rubidium salt of the hydrazoic acid HN3. Like most azides, it is explosive. At room temperature, rubidium
Rubidium_azide
Italian chemist (1864–1931)
Angeli focused on nitrogen compounds. He investigated the structure of hydrazoic acid, synthesised nitrohydroxylamine (1894), and discovered the nitroxyl
Angelo_Angeli
Holmium(III) telluride – Ho2Te3 Hexafluorosilicic acid – H2F6Si Hydrazine – N2H4 Hydrazoic acid – HN3 Hydroiodic acid – HI Hydrogen bromide – HBr Hydrogen chloride
List_of_inorganic_compounds
Chemical compound
pyridyl-cyclobutanol. Reaction of the latter tertiary alcohol with hydrazoic acid under conditions for the Schmidt reaction gives myosmine. Reduction
Myosmine
chemistry of the COILs. AGIL uses a reaction of chlorine atoms with gaseous hydrazoic acid, resulting in excited molecules of chloronitrene (NCl), which then pass
All_gas-phase_iodine_laser
atmospheric transmittance) Chemical reaction of chlorine atoms with gaseous hydrazoic acid, resulting in excited molecules of nitrogen chloride, which then pass
List_of_laser_types
Any chemical compound having at least one nickel atom
sensitive explosive. It can be made by treating nickel carbonate with hydrazoic acid. Acetone causes the precipitation of the hydrous solid salt, which is
Nickel_compounds
Chemical compound
Caesium azide can be prepared from the neutralization reaction between hydrazoic acid and caesium hydroxide: CsOH + HN3 → CsN3 + H2O Caesium carbonate can
Caesium_azide
HNCO isocyanic acid HNO nitroxyl 14332–28–6 HNO2 nitrous acid 7782–77–6 HNO3 nitric acid hydrogen nitrate 7697–37–2 HN3 hydrazoic acid 7782–79–8 HOBr
Glossary_of_chemical_formulae
Reaction in organic chemistry
reaction, by which carboxylic acids can be transformed into amines through the addition of hydrazoic acid under acidic aqueous conditions. The Stieglitz
Stieglitz_rearrangement
Chemical compound
Munich. The first method is by the addition of diborane to a solution of hydrazoic acid in diethyl ether at a temperature range between −20 °C and −10 °C. This
Boron_triazide
Chemical compound
azide (which can be formed in situ via reaction of atomic fluorine with hydrazoic acid) decomposes upon shock into NF and N2. Many NF-producing reactions give
Nitrogen_monofluoride
Copper(II) arsenate Cu3(AsO4)2 Arsenate (arsenic acid) Copper(II) azide Cu(N3)2 Azide (hydrazoic acid) Copper(II) acetylacetonate Cu(O2C5H7)2 Acetylacetonate
List_of_copper_salts
Chemical compound
made by John F. Haller in 1942. Fluorine azide can be made by reacting hydrazoic acid or sodium azide, with fluorine gas. HN3 + F2 → N3F + HF NaN3 + F2 →
Fluorine_azide
Chemical compound
investigation indicated as reaction products nitrogen, silicon tetraazide and hydrazoic acid. A practical application of free silicon tetraazide is unlikely due
Silicon_tetraazide
Chemical compound
solid that can be prepared by the protonolysis of diethylzinc with hydrazoic acid: Zn(C2H5)2 + 2 HN3 → Zn(N3)2 + 2 C2H6 Zinc azide is a coordination polymer
Zinc_azide
Chemical compound
Radium azide can be prepared by dissolving radium carbonate in aqueous hydrazoic acid and evaporating the resulting solution. Radium azide forms a white crystalline
Radium_azide
Chemical compound
Main hazards Harmful, Explosive Related compounds Related compounds Hydrazoic acid, Chlorine azide, Ethyl azide Except where otherwise noted, data are
N-Propyl_azide
Plants Hydrazoic acid used primarily for preservation of stock solutions, and as a reagent Hydrochloric acid a highly corrosive, strong mineral acid with
List_of_reagents
Chemical compound
prepared by passing chlorine gas over silver azide, or by an addition of acetic acid to a solution of sodium hypochlorite and sodium azide. Chlorine azide further
Chlorine_azide
Chemical compound
cations Potassium azide Sodium azide Copper(II) azide Related compounds Hydrazoic acid Except where otherwise noted, data are given for materials in their
Lead(II)_azide
Chemical compound used in organic synthesis
Krutošík, A. (2022). "Copper-Catalyzed Azide–Alkyne Cycloaddition of Hydrazoic Acid". The Journal of Organic Chemistry. 87 (4): 2772–2783. doi:10.1021/acs
Tosyl_azide
nucleophilic than chloride, as reflected by the higher pKa of hydrazoic acid (4.6) vs hydrochloric acid (-5.9). As a monodentate ligand, azide binds through one
Transition metal azide complex
Transition_metal_azide_complex
Chemical compound
1.1A. GHS labelling: Pictograms Related compounds Related compounds Hydrazoic acid Fluorine azide Chlorine azide Iodine azide Except where otherwise noted
Bromine_azide
Chemical compound
orthorhombic Space group Pbam, No. 55 Related compounds Related compounds Hydrazoic acid Fluorine azide Chlorine azide Bromine azide Except where otherwise noted
Iodine_azide
Chemical compound
thiols, phenol, carboxylic acids, hydrogen fluoride, thiocyanic acid, hydrazoic acid, difluorophosphoric acid, thiophosphinic acids, and alkylsilols. With
Pentamethylantimony
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