Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Hydrogen compound

Inorg anic Compounds. Hydrogen chloride reacts with inorganic compounds by either heterolytic or homolytic fission of the H—Cl bond. However, anhydrous HCl has high kinetic barriers to either type of fission and hence, this material is relatively inert. [Pg.443]

Solid Peroxygen Compounds. Hydrogen peroxide reacts with many compounds, such as borates, carbonates, pyrophosphates, sulfates, sihcates, and a variety of organic carboxyHc acids, esters, and anhydrides to give peroxy compounds or peroxyhydrates. A number of these compounds are stable sohds that hydrolyze readily to give hydrogen peroxide in solution. [Pg.146]

At first, these highly reactive free radicals react with the antioxidant, but as the antioxidant is consumed, the free radicals react with other compounds. Hydrogens on methylene groups between double bonds are particularly susceptible to abstraction to yield the resonance stabilized free radical ( ) ... [Pg.260]

Nickel compounds Hydrogenations (e.g. Raney nickel) Conversion of synthesis gas to methane Reduction of organo nitro compounds to amines Carcinogenic (nickel subsulphide). Skin sensitization... [Pg.121]

Toxic Reactions of the Skin Irritation is the most common reaction of the skin. Skin irritation is usually a local inflammatory reaction. The most common skin irritants are solvents dehydrating, oxidizing, or reducing compounds and cosmetic compounds. Acids and alkalies are common irritants. Irritation reactions can be divided into acute irritation and corrosion. Necrosis of the surface of the skin is typical for corrosion. Acids and alkalies also cause chemical burns. Phenols, organotin compounds, hydrogen fluoride, and yellow phosphorus may cause serious burns. Phenol also causes local anesthesia, in fact it has been used as a local anesthetic in minor ear operations such as puncture of the tympanous membrane in cases of otitis. ... [Pg.307]

Oxidation of the hexahydro to tetrahydro derivatives was mentioned in connection with the synthesis of 3,5-dioxo-l,2,4-triazines (e.g., Section II,B,2,a). The reverse procedure, hydrogenation of the tetrahydro derivatives, was used with 6-azauracil, 6-azathymine, and their iV-methyl derivatives. With all these compounds hydrogenation proceeds smoothly in the presence of Adams catalyst. Only the hydrogenation of l-methyl-6-azathymine was not successful. ... [Pg.235]

Sulfur in crude oils is mainly present in the form of organosulfur compounds. Hydrogen sulfide is the only important inorganic sulfur compound found in crude oil. Its presence, however, is harmful because of its corrosive nature. Organosulfur compounds may generally be classified as acidic and non-acidic. Acidic sulfur compounds are the thiols (mercap-tans). Thiophene, sulfides, and disulfides are examples of non-acidic sulfur compounds found in crude fractions. Extensive research has been carried out to identify some sulfur compounds in a narrow light petroleum fraction.Examples of some sulfur compounds from the two types are ... [Pg.15]

Ultraviolet spectroscopy metal in water complexes, 2, 309 redox potentials and, 1,498 Ultraviolet-visible spectroscopy, 1, 243 Umbellicomplexone metallofluorescent indicator, 1. 558 Undecametallic complexes, 1, 167 Uni thiol chelating agent heavy metal poisoning, 6. 767 Unsaturated compounds hydrogenation... [Pg.241]

As has already been mentioned, during the iron(II)-hydrogen peroxide reaction a number of organic compounds which do not react, or react only slowly with hydrogen peroxide, are readily oxidizable. In the induced oxidation of organic compounds, hydrogen peroxide plays the role of the actor and iron(II) is the inductor. [Pg.565]

Arrhenius proposed the idea that when an acid dissolves in water, it dissociates, or breaks, into its ions. This process is called ionization or disassociation. For example, the compound hydrogen chloride dissociates into a positive hydrogen ion and a negative chlorine ion when dissolved in water. This disassociation forms hydrochloric acid. [Pg.16]

Direct conversion of target compounds (sulfur and nitrogen compounds, hydrogen sulfide, polyaromatics, etc.) to an easily removable or desirable product. [Pg.66]

Leek and Bagander [221] determined reduced sulfide compounds (hydrogen sulfide, methyl mercaptan, carbon disulfide, dimethyl sulfide, and dimeth-yldisulfide) in water by gas chromatography using flame detection. Detection limits ranged from 0.2 ng/1 for carbon disulfide to 0.6 ng/1 for methyl mercaptan. Hydrogen sulfide was determined at the 1 ng/1 level. [Pg.104]

The chemiluminescent reaction with chlorine dioxide provides a highly sensitive and highly selective method for only two sulfur compounds, hydrogen sulfide and methane thiol [81]. As in the flame photometric detector (FPD), discussed below, atomic sulfur emission, S2(B3S -> ) is monitored in the wave-... [Pg.373]

Inorganic compound extraction, ionic liquids in, 26 875-876 Inorganic compound-hydrogen chloride-water systems, 13 817-818 Inorganic compound lubricants, 15 246 Inorganic compounds, 13 104 hydrochloric acid reaction with,... [Pg.476]

Inorganic glass systems, 12 568t Inorganic halogen compounds, hydrogen chloride reaction with, 13 820 Inorganic hollow-fiber membranes, 16 23-24... [Pg.476]

Absorption. Absorption of cyanide across the gastrointestinal mucosa depends on the pH of the gut and the pKa and lipid solubility of the particular cyanide compound. Hydrogen cyanide is a weak acid with a pKa of 9.2 at 25 °C. The acidic environment in the stomach favors the non-ionized form of hydrogen cyanide and facilitates absorption. Information regarding the rapid lethal effects following oral intake of cyanide in humans (Gosselin et al. 1976) indicates that cyanide is rapidly absorbed from the gastrointestinal tract. [Pg.82]

On exposure to blue-green light, isomerisation of one or both double bonds takes place, forming trans,cis-bilirubin and trans,trans-bilirubin. In these compounds, hydrogen bonding to water molecules takes place, so that the molecule becomes increasingly water-soluble and can be excreted, relieving the baby of its toxic effect. [Pg.148]

In general, the importance of the acceptor properties of all types of compounds containing an 0—0 bond should be emphasized. A likely function of a peroxidic compound (hydrogen peroxide, alkyl peroxides, acyl peroxides, peroxydisulfate, to mention a few commonly used ones) under photochemical conditions (UV light) should be that of an electron acceptor from an excited state. Moreover, the electron acceptor efficiency is high in view of the dissociative nature of the ET step. [Pg.126]

Quantitative predictions about the heats of formation of hydrides of intermetallic compounds have been discussed by Shilov etal. (1989) they studied reversible and irreversible transformations in intermetallic compound-hydrogen systems and observed that four basic types of PIT diagrams exist for these systems. [Pg.334]

BBB penetration can be increased by reducing the hydrophibcity of the compounds, hydrogen-bond acceptors and molecular volume are the important parameters influencing BBB permeabihty of the compounds. [Pg.698]

TABLE A2 Thermochemical Data of Selected Chemical Compounds Hydrogen, monatomic (H), ideal gas, molecular weight = 1.00794... [Pg.598]


See other pages where Hydrogen compound is mentioned: [Pg.112]    [Pg.263]    [Pg.487]    [Pg.116]    [Pg.271]    [Pg.220]    [Pg.765]    [Pg.96]    [Pg.263]    [Pg.602]    [Pg.341]    [Pg.464]    [Pg.91]    [Pg.67]    [Pg.194]    [Pg.15]    [Pg.453]    [Pg.472]    [Pg.530]    [Pg.287]    [Pg.65]    [Pg.83]    [Pg.652]    [Pg.19]    [Pg.92]    [Pg.374]   
See also in sourсe #XX -- [ Pg.282 ]

See also in sourсe #XX -- [ Pg.14 , Pg.15 ]

See also in sourсe #XX -- [ Pg.104 ]




SEARCH



Acid-base properties, binary hydrogen compounds

Acidity and Basicity of Binary Hydrogen Compounds

Activated hydrogens in saturated carbonyl compounds

Activated hydrogens in unsaturated carbonyl compounds

Active hydrogen compounds

Active hydrogen compounds acidity

Active hydrogen compounds acylation

Active hydrogen compounds alkylation

Active hydrogen compounds amination

Active hydrogen compounds aromatic nucleophilic substitution

Active hydrogen compounds arylation

Active hydrogen compounds base catalyst condensation

Active hydrogen compounds base-catalyzed

Active hydrogen compounds condensations

Active hydrogen compounds conversion

Active hydrogen compounds dimerization

Active hydrogen compounds formation

Active hydrogen compounds halogenation

Active hydrogen compounds ketones

Active hydrogen compounds nitration

Active hydrogen compounds nitrosation

Active hydrogen compounds reaction

Active hydrogen compounds reaction with aryl halides

Active hydrogen compounds with aldehydes

Active hydrogen compounds with arenes

Addition of hydrogen halide to unsaturated alcohols, ethers, carbonyl compounds, and nitriles

Additive compounds, heterogeneous hydrogenation

Allyl compounds hydrogenation

Allyl hetero compounds 1,3-heteroatom-hydrogen transposition reaction

Amines from active hydrogen compounds

Ammonia Borane and Related Compounds as Hydrogen Source Materials

And related compounds, action of hydrogen

And related compounds, action of hydrogen peroxide

Aromatic compounds asymmetric-transfer hydrogenation

Aromatic compounds hydrogen isotope exchange reactions

Aromatic compounds hydrogenation

Aromatic compounds transfer hydrogenation

Aromatic compounds, hydrogenation mechanism

Asymmetric hydrogenation compounds

Axial chiral compounds hydrogenation

Azo compounds hydrogenation

Binary compounds of hydrogen

Binary hydrogen compounds, acidity

Biotransformations in the Preparation of Compounds Labeled with Carbon and Hydrogen Isotopes

Bismuth compounds hydrogen halides

Boiling points, hydrogen compounds

Boron, diboron compounds hydrogen

Boron-Hydrogen Compounds

Boron-Hydrogen Compounds Boranes

Buschow, Hydrogen absorption in intermetallic compounds

By hydrogenation of fluoronitro compounds

C-Glycosyl compounds hydrogen atom-transfer

Calf, G. E., Garnett, J. L., isotopic Hydrogen Labeling of Heterocyclic Compounds

Carbohydrates and related compounds, action of hydrogen peroxide

Carbon hydrogen bending aromatic compounds

Carbon-hydrogen compounds

Carbon-hydrogen compounds, conductance

Carbon-hydrogen-oxygen compound

Carbon-hydrogen-oxygen compound combustion

Carbonyl compounds asymmetric hydrogenation

Carbonyl compounds catalytic hydrogenation

Carbonyl compounds homogeneous catalytic hydrogenation

Carbonyl compounds hydrogen abstraction

Carbonyl compounds hydrogen-bonding effects

Carbonyl compounds hydrogenation

Carbonyl compounds hydrogenation, homogeneous catalysis

Carbonyl compounds hydrogenation, stereochemistry

Carbonyl compounds intermolecular hydrogen abstraction

Carbonyl compounds intramolecular hydrogen abstraction

Carbonyl compounds, transfer hydrogenation

Carbonyl hydrogen compounds

Chiral compounds hydrogenation

Chiral compounds transition metal carbon-hydrogen

Cobalt complexes carbonyl compound hydrogenation

Compounds Peroxide, hydrogen, reaction with alkenes

Compounds of Carbon and Hydrogen - The Hydrocarbons

Compounds of Nitrogen with Hydrogen

Compounds of Nitrogen with Hydrogen and Noble Gases

Compounds of silicon with hydrogen and alkyl groups

Compounds, chemical, formation hydrogen

Coupling aromatic compounds, carbon hydrogen

Covalent compounds hydrogen atom

Covalent compounds molecular hydrogen

Crystal structures hydrogen-metal compounds

Cyclodextrins as Model Compounds to Study Hydrogen-Bonding Networks

Deuterated compounds Hydrogen chloride

Deuterated compounds hydrogen bonds

Diazo compounds, hydrogenation

Dibenzylamine compound 4, hydrogenation

Dinuclear compounds, double hydrogen

Dinuclear compounds, double hydrogen bridges

Dissociation energy hydrogen compounds

Electrolytic Fluorination of Heterocyclic Compounds in Trialkylamine Complexes with Anhydrous Hydrogen Fluoride

Enolate anions from active hydrogen compounds

Exchange reactions, hydrogen isotope, of organic compounds in liquid ammonia

Formation from Other Compounds Containing Boron-Hydrogen Bonds

Formation from Phosphorus Compounds and Hydrogen or Hydrides

Formation from nitro compound hydrogenation

Formic acid hydrogenation, nitro compound reduction

From active hydrogen compounds

Further Reactions of Active Hydrogen Compounds

Graphite-potassium-hydrogen compound

Group hydrogen compounds

Guanidinium compounds, amino— hydrogen

Heteroaromatic compounds asymmetric hydrogenation

Heteroaromatic compounds hydrogenation

Heterocycles from active hydrogen compounds

Heterocyclic compounds hydrogenation

Heterocyclic compounds hydrogenation, nitro compound reduction

Heterocyclic compounds isotopic hydrogen labeling

Hydrazo compounds, from hydrogenation

Hydrazo compounds, from hydrogenation nitro groups

Hydride A binary compound of hydrogen

Hydridic hydrogen organoboron compounds

Hydrocarbon A compound of carbon and hydrogen

Hydrocarbon A compound that contains only carbon and hydrogen

Hydrocarbons Are Organic Compounds Containing Only Hydrogen and Carbon

Hydrocarbons Compounds Containing Only Carbon and Hydrogen

Hydrocarbons Organic compounds that contain only carbon and hydrogen

Hydrogen Bonding in Organofluorine Compounds

Hydrogen Compounds of Nonmetals

Hydrogen Compounds of the Halogens

Hydrogen Peroxide and Inorganic Peroxo Compounds

Hydrogen absorption in intermetallic compounds

Hydrogen abstraction compounds

Hydrogen atom transfer compounds

Hydrogen availability compounds

Hydrogen binary compounds

Hydrogen binary inorganic compounds

Hydrogen bonding compounds

Hydrogen bonding multiple hydroxyl compounds

Hydrogen bonding phosphorus compounds

Hydrogen bonds boron compounds

Hydrogen bonds in organometallic compounds

Hydrogen chloride with nitro compounds

Hydrogen chloride, from oxidation chlorine compounds

Hydrogen compounds chemical

Hydrogen compounds of nitrogen

Hydrogen compounds polarity

Hydrogen compounds with nonmetals

Hydrogen compounds, active reduction

Hydrogen compounds, binary, nomenclature

Hydrogen compounds, marine organic

Hydrogen exchange electrophilic, in aromatic compounds

Hydrogen important compounds

Hydrogen in intermetallic compounds

Hydrogen in organic compounds

Hydrogen iodide allylic compounds

Hydrogen iodide sulfur-nitrogen compounds

Hydrogen naming compounds

Hydrogen nitrogen compounds with

Hydrogen nuclear magnetic resonance compounds

Hydrogen of carbonyl compounds

Hydrogen peroxide aromatic compounds

Hydrogen peroxide compounds

Hydrogen peroxide reactions with sulfur compounds

Hydrogen peroxide, 30% concentration compounds

Hydrogen polyunsaturated compounds

Hydrogen rare-earth compounds

Hydrogen release compound, HRC

Hydrogen storage compounds

Hydrogen storage compounds bond order

Hydrogen storage compounds value

Hydrogen storage intermetallic compounds

Hydrogen sulfide carbonyl compounds

Hydrogen sulfide hydrazo compounds

Hydrogen sulfide nitro compounds

Hydrogen sulfide reduction, aromatic nitro compounds

Hydrogen sulfide, addition with carbonyl compounds

Hydrogen telluride aromatic compounds

Hydrogen transfer carbonyl compounds

Hydrogen-Bonded Complexes with Polar Organic Compounds

Hydrogen-bonding activation carbonyl compounds, asymmetric

Hydrogen-bonding activation compounds

Hydrogen-containing compounds

Hydrogen-containing compounds boiling points

Hydrogen-lithium exchange with aromatic compounds

Hydrogenated benzene compounds

Hydrogenated compounds

Hydrogenated compounds

Hydrogenated silicon compounds

Hydrogenation IV Aromatic Compounds

Hydrogenation V Carbonyl Compounds

Hydrogenation aromatic carbonyl compounds

Hydrogenation carbonyl compound reduction

Hydrogenation compounds

Hydrogenation compounds

Hydrogenation dihydrogen compounds

Hydrogenation nitro aromatic compounds

Hydrogenation nitroso compounds

Hydrogenation of Compounds with CC Bonds

Hydrogenation of Heterocyclic Aromatic Compounds

Hydrogenation of Imines, Oximes, and Related Compounds

Hydrogenation of Keto-Compounds

Hydrogenation of acetylenic compounds

Hydrogenation of aromatic compounds

Hydrogenation of aromatic nitro compounds

Hydrogenation of azo compounds

Hydrogenation of carbonyl compounds

Hydrogenation of heteroaromatic compounds

Hydrogenation of nitro compounds

Hydrogenation of nitro compounds and imines

Hydrogenation of organic compounds

Hydrogenation of organic sulfur compounds

Hydrogenation of unsaturated carbonyl compound

Hydrogenation organic compounds

Hydrogenation to Nitroso or Hydroxyimino and Hydroxyamino Compounds

Hydrogenation unsaturated carbonyl compounds

Hydrogenation unsaturated compounds

Hydrogenation zirconium compounds

Hydrogenation, apparatus for highpressure of nitro compounds

Hydrogenation, catalytic heteroaromatic compounds

Hydrogenation, catalytic, alkene conjugated compounds

Hydrogenation, catalytic, alkene sulfur compounds

Hydrogenous compounds

Hydrogenous compounds

Hydrogen—Shallow-Level-Defect Complexes in Compound Semiconductors

Imines hydrogen compounds

Intermetallic compounds hydrogen

Intermetallic compounds, 1,3-butadiene hydrogenation

Ionization of Compounds Containing Nitrogen and Hydrogen

Isotopic hydrogen labeling of heterocyclic compounds, one-step methods

Lanthanide compounds, alkene hydrogenation

Liquid-Phase Oxidations with Hydrogen Peroxide and Molecular Oxygen Catalyzed by Polyoxometalate-Based Compounds

Mannich bases hydrogen compounds

Model aromatic compound hydrogenation

Molecular hydrogen, coordination compound

Moody, G. J., The Action of Hydrogen Peroxide on Carbohydrates and Related Compounds

Nitration of compounds containing acidic hydrogen

Nitriles, catalytic hydrogenation compounds

Nitro compounds aromatic, catalytic hydrogenation

Nitro compounds hydrogen bonding

Nitro compounds with active hydrogen

Nitro compounds, heterogeneous hydrogenation

Nitro compounds, heterogeneous hydrogenation reduction reactions

Nitro compounds, hydrogenation

Nitrogen compounds heterogeneous hydrogenation

Nitrogen hydrogen compounds

Nitroso compounds heterogeneous hydrogenation

Nitroso compounds hydrogenation, nitro compound reduction

Nitroso compounds with hydrogen peroxide

Old compounds of hydrogen and nitrogen

Olefin hydrogenation purely organic compounds

Olefinic compounds, catalytic hydrogenation

Optical Spectroscopy of Hydrogenated III-V Compounds

Organic compounds hydrogen atoms

Organic compounds hydrogen molecule

Organic compounds, hydrogen-bond rules

Organolithium compounds, hydrogenation

Organomagnesium compounds, hydrogenation

Organometallic compounds hydrogen bonding

Organosilicon compounds active hydrogen

Organosulfur compounds hydrogen

Organosulfur compounds hydrogenation

Organotin compounds, hydrogen bond

Organozinc compounds, hydrogenation

Other Hydrogen-Oxygen Compounds

Oxygen hydrogen compounds

Partial rate factors for hydrogen exchange in some substituted aromatic compounds

Peroxidase-hydrogen peroxide compound

Photo-Induced Hydrogen Abstraction and Addition Reactions of Aromatic Compounds

Photocatalytic hydrogenation of organic compounds

Photocatalytic membrane reactor compounds hydrogenation

Planar chiral compounds hydrogenation

Reaction CLVI.—Action of Hydrogen Sulphide on Diazonium Compounds

Reactions with Inorganic Compounds Containing Hydrogen

Reactivity of Hydrogens in Saturated Compounds

References for Chapter 1.3 Hydrogen Peroxide and Inorganic Peroxo Compounds

Replacement of hydrogen by halogen in aromatic compounds general

Replacement of hydrogen by halogen in aromatic nitro compounds

Selenium hydrogen compounds

Silane, hydridoionic hydrogenation unsaturated carbonyl compounds

Silane, triethylionic hydrogenation carbonyl compounds

Silver compounds hydrogen bonding

Stilbazoles hydrogen-bonded compounds

Styrene compounds alkyne hydrogenation

Sulfonate compounds, hydrogenation

Sulfones hydrogen compounds

Sulfur hydrogen compounds

Sulfur-nitrogen compounds hydrogen

Sulfur-nitrogen compounds hydrogen sulfide

Tellurium hydrogen compounds

The Rare Earth-Hydrogen Compounds

Thermotropic hydrogen bonded compounds

Thiocarbonyl compounds hydrogen abstraction and cycloaddition

Thorium hydrogen compounds

Tosylhydrazones hydrogen compounds

Transfer Hydrogenation of Unsaturated Compounds

Transfer hydrogenation of carbonyl compounds

Transfer hydrogenation, nitro compounds

Trifluoroacetate compounds hydrogen bonding

Unsaturaled compounds hydrogenation

Unsaturated carbonyl compounds hydrogen availability

Unsaturated compounds without added hydrogen

Vanadium compounds, catalysts with hydrogen peroxide

Vinyl compounds hydrogenation

Ylide compounds 1.4- hydrogen shift

© 2019 chempedia.info