13446-48-5

Basic information

• Product Name: AMMONIUM NITRITE, 20% SOLN
• Synonyms: AMMONIUM NITRITE;nitrousacid,ammoniumsalt;AMMONIUM NITRITE, 20% SOLN
• CAS NO: 13446-48-5
• Molecular Formula: H₄N*NO₂
• Molecular Weight: 64.04396
• EINECS: 236-598-7
• Product Categories: Inorganics
• Mol File: 13446-48-5.mol
• Article Data: 3

Chemical Properties

• Melting Point: explodes at 60–70, producing N2, H2O, and other products [KIR78] [CIC73]
• Boiling Point: °Cat760mmHg
• Flash Point: °C
• Appearance: /
• Density: 1.690
• Water Solubility: g/100 g solution H2O: 56.0 (1.4°C), 64.3 (19.15°C); equilibrium solid phase NH4NO2 [KRU93]
• CAS DataBase Reference: AMMONIUM NITRITE, 20% SOLN(CAS DataBase Reference)
• NIST Chemistry Reference: AMMONIUM NITRITE, 20% SOLN(13446-48-5)
• EPA Substance Registry System: AMMONIUM NITRITE, 20% SOLN(13446-48-5)

Safety Data

• Hazardous Substances Data: 13446-48-5(Hazardous Substances Data)

Usage

Chemical Properties

white-yellowish crystal(s); uncertain stability; can be made by adding a solution of barium nitrite to ammonium sulfate solution [KIR78] [CRC10]

Safety Profile

Powerful oxidizer. Severe explosion hazard when shocked orexposed to heat (60-70°). When heated to decompositionit emits toxic fumes of NOx and NH3.

InChI:InChI=1/HNO2.H3N/c2-1-3;/h(H,2,3);1H3

Upstream product

• 7727-37-9 nitrogen 
• 136327-05-4 ammonia-hydrogen peroxide 
• 13444-90-1 Nitryl chloride 
• 7664-41-7 ammonia 
• 7758-09-0 potassium nitrite 
• 7783-99-5 silver(I) nitrite 
• 7632-00-0 sodium nitrite 
• 10102-44-0 Nitrogen dioxide 
• 7782-41-4 fluorine 
• 7722-84-1 dihydrogen peroxide 
• 80937-33-3 oxygen 
• 7782-77-6 cis-nitrous acid 
• 302-01-2 hydrazine 
• 10544-73-7 dinitrogen trioxide 

Downstream Products

• 104-91-6 p-nitrosophenol 
• 7782-77-6 cis-nitrous acid 
• 7664-41-7 ammonia 
• 10024-97-2 dinitrogen monoxide 

Relevant articles and documents

CALORIMETRIC, THERMOANALYTICAL AND DIELECTRIC STUDIES OF PHASE TRANSITIONS IN AMMONIUM NITRITE.

Ammonium nitrite NH//4NO//2 has been studied by differential thermal analysis, calorimetry and dielectric measurement. A higher order phase transition was found at 276. 5 K. The enthalpy and entropy of transition are 1. 2 kJ mol** minus **1 and 4. 6 J K** minus **1 mol** minus **1, respectively. A peak of the dielectric constant, reaching 12 at 200 Hz, occurred at the transition temperature. The temperature dependence of the dielectric constant suggests that the low temperature phase is ferroelectric. A first order transition occurred at 347 K, of which a detailed study has been hampered by the decompositon of the sample

Direct synthesis of V-W-Ti nanoparticle catalysts for selective catalytic reduction of NO with NH3

A series of V-W-Ti nanoparticle catalysts with variable V doping amounts were directly synthesized by the sol-gel method, and their catalytic performances were tested for the selective catalytic reduction of NO with ammonia. The catalysts were characterized by means of XRD, Raman, BET, TEM, SEM, NH3-TPD, H2-TPR and XPS. SCR kinetic studies were conducted to understand the mechanistic features of V-W-Ti catalysts. It was found that the V0.02W0.04Ti catalyst exhibited the highest NO conversion and the lowest apparent activation energy. The characterization results showed that V was incorporated into the TiO2 framework and the redox cycle of V4+ + Ti4+ → V5+ + Ti3+ existed over the V-W-Ti catalysts. A high concentration of reducible and distorted V species could account for the excellent NH3-SCR catalytic performance of the V0.02W0.04Ti catalyst. In situ FT-IR spectroscopy was performed to investigate the mechanism of the NH3-SCR reaction over the V0.02W0.04Ti catalyst. Experimental results showed that both Lewis and Bronsted acid sites over the V0.02W0.04Ti catalyst were involved in the NH3-SCR reaction. The adsorption of nitrate species was significantly limited and the adsorbed NO2 gaseous molecules were easily formed over the V0.02W0.04Ti catalyst, which resulted in the high catalytic activity at low temperature. This journal is