13968-08-6

Basic information

• Product Name: hydronium ion
• Synonyms: hydronium ion;Oxonium
• CAS NO: 13968-08-6
• Molecular Formula: H₃O
• Molecular Weight: 19.02322
• Mol File: 13968-08-6.mol
• Article Data: 28

Chemical Properties

• Boiling Point: °Cat760mmHg
• Flash Point: °C
• Appearance: /
• Density: g/cm³
• PKA: -1.74(at 25℃)
• CAS DataBase Reference: hydronium ion(CAS DataBase Reference)
• NIST Chemistry Reference: hydronium ion(13968-08-6)
• EPA Substance Registry System: hydronium ion(13968-08-6)

Safety Data

• Hazardous Substances Data: 13968-08-6(Hazardous Substances Data)

Usage

Definition

An ion (H3O+) formed by the transfer of a proton (hydrogen nucleus) from one molecule of water to another; a companion ion (OH–) is also formed, the reaction is 2H2O → H3O+ + OH–. Formation of such ions is statistically rare, resulting from the interactio

InChI:InChI=1/H2O/h1H2/p+1

Upstream product

• 7732-18-5 water 
• 77144-12-8 CH₂OOH⁽¹⁺⁾ 
• 59348-27-5 CHS₂⁽¹⁺⁾ 
• 7446-11-9 sulfur trioxide 
• 7664-93-9 sulfuric acid 
• 10038-98-9 germaniumtetrachloride 
• 7789-20-0 water-d2 
• 1333-74-0 hydrogen 
• 14936-94-8 ethyl cation 
• 56583-62-1 water cation 
• 7783-06-4 hydrogen sulfide 
• 7664-39-3 hydrogen fluoride 
• 64-19-7 acetic acid 
• 7782-49-2 selenium 

Downstream Products

• 1333-74-0 hydrogen 
• 7647-01-0 hydrogenchloride 
• 83779-89-9 Ni⁽¹⁺⁾*H₂O 
• 14903-34-5 nickel(I)⁽¹⁺⁾ 
• 14280-50-3 lead⁽²⁺⁾ cation 
• 7732-18-5 water 
• 16887-00-6 chloride 
• 13425-80-4 dichloroacetate ion 
• 126492-96-4 Fe⁽¹⁺⁾*H₂O 
• 14067-02-8 iron ⁽¹⁺⁾ 
• 15176-26-8 zinc⁽¹⁺⁾ 
• 69890-53-5 SiF₅(H₂O)^(1-) 
• 7664-39-3 hydrogen fluoride 
• 14701-12-3 sulphonium 

Relevant articles and documents

Thermal decomposition of hydrogen peroxide in the presence of sulfuric acid

Hydrogen peroxide (H2O2) is popularly employed as a reaction reagent in cleaning processes for the chemical industry and semiconductor plants. By using differential scanning calorimetry (DSC) and vent sizing package 2 (VSP2), this study focused on the thermal decomposition reaction of H2O2 mixed with sulfuric acid (H 2SO4) with low (0.1, 0.5 and 1.0 N), and high concentrations of 96 mass%, respectively. Thermokinetic data, such as exothermic onset temperature (T 0), heat of decomposition (ΔH d), pressure rise rate (dP/dt), and self-heating rate (dT/dt), were obtained and assessed by the DSC and VSP2 experiments. From the thermal decomposition reaction on various concentrations of H2SO4, the experimental data of T 0, ΔH, dP/dt, and dT/dt were obtained. Comparisons of the reactivity for H2O2 and H2O2 mixed with H2SO4 (lower and higher concentrations) were evaluated to corroborate the decomposition reaction in these systems.

Preferential oxidation of CO in H2 by aqueous polyoxometalates over metal catalysts

Stream cleaning: CO in CO/H2 mixtures is oxidized preferentially at room temperature with an aqueous polyoxometalate (POM) solution over gold catalysts (see scheme). The rate of H2 oxidation is slow and is inhibited by CO. This process can be used to remove CO efficiently from H 2 gas streams. The solution containing protons and reduced POM can be used to produce electrical energy at a fuel-cell anode through re-oxidation of the reduced POM.

Interaction of water with GeCl4, SnCl4, and AsCl 3

The interaction of water with GeCl4, SnCl4, and AsCl3 was studied by IR spectroscopy. The results demonstrate that these chlorides contain molecular water in monomeric form. At water concentrations above 10-2 mol/l, GeCl4 also contains H3O+ ions. The mechanisms of GeCl4 and AsCl3 hydrolysis were studied over a wide range of water concentrations.