Arsenic acid nitrosyl

Aqueous nitric acid up to 50 per cent, concentration has little action on arsenic,9 but the concentrated acid or aqua regia causes rapid oxidation to arsenious and arsenic acids. When the acid is more dilute some ammonia may be formed.10 A mixture of arsenic and potassium nitrate detonates on ignition.11 Solutions of ammonium12 and barium13 nitrates slowly dissolve arsenic to form arsenite and arsenate. Hydra-zoic acid dissolves the element with evolution of hydrogen, and the solution on evaporation deposits arsenious oxide.14 Nitrosyl chloride15 and potassium amide16 also react with arsenic. 

HYDROCHLORIC ACID/NITRIC ACID, MIXTURE (8007-56-5) An extremely strong oxidizer. Violent reaction with reducing agents, combustible materials, metal powders, organic substances, and other easily oxidized materials. Reacts with ethylene chloride, sulfuric acid, acrolein, antimony trisulfide, antimony tritelluride, arsenic pentasulfide, 1,1-dichloro-l-nitroethane, 1,3-dichloropropene, diethylamine, s-trioxane. Incompatible with m-bis(trichlormethyl)benzene. Dissolves metals such as gold, palladium, and platinum. Attacks polyvinyl alcohol and engineering metals, including Hastelloy C and 316 stainless steel. See also Hydrochloric Acid, Nitric Acid, Nitrosyl Chloride. 

TIN, TIN FLAKE, or TIN POWDER (7440-31-5) Finely divided material is combustible and forms explosive mixture with air. Contact with moisture in air forms tin dioxide. Violent reaction with strong acids, strong oxidizers, ammonium perchlorate, ammonium nitrate, bis-o-azido benzoyl peroxide, bromates, bromine, bromine pentafluoride, bromine trifluoride, bromine azide, cadmium, carbon tetrachloride, chlorine, chlorine monofluoride, chlorine nitrate, chlorine pentafluoride, chlorites, copper(II) nitrate, fluorine, hydriodic acid, dimethylarsinic acid, nitrosyl fluoride, oxygen difluoride, perchlorates, perchloroeth-ylene, potassium dioxide, phosphorus pentoxide, sulfur, sulfur dichloride. Reacts with alkalis, forming flammable hydrogen gas. Incompatible with arsenic compounds, azochlo-ramide, benzene diazonium-4-sulfonate, benzyl chloride, chloric acid, cobalt chloride, copper oxide, 3,3 -dichloro-4,4 -diaminodiphenylmethane, hexafluorobenzene, hydrazinium nitrate, glicidol, iodine heptafluoride, iodine monochloride, iodine pentafluoride, lead monoxide, mercuric oxide, nitryl fluoride, peroxyformic acid, phosphorus, phosphorus trichloride, tellurium, turpentine, sodium acetylide, sodium peroxide, titanium dioxide. Contact with acetaldehyde may cause polymerization. May form explosive compounds with hexachloroethane, pentachloroethane, picric acid, potassium iodate, potassium peroxide, 2,4,6-trinitrobenzene-l,3,5-triol. 

Arsenic trifluoride (arsenic(III) fluoride), AsF, can be prepared by reaction of arsenic trioxide with a mixture of sulfuric acid and calcium fluoride or even better with fluorosulfonic acid. Chlorine reacts with ice-cold arsenic trifluoride to produce a hygroscopic soHd compound, arsenic dichloride trifluoride [14933-43-8] ASCI2F35 consisting of AsQ. and AsF ions (21). Arsenic trifluoride forms a stable adduct, 2AsF2 SSO, with sulfur trioxide and reacts with nitrosyl fluoride to give nitrosonium hexafluoroarsenate(V) [18535-07-4] [NO][AsFg]. 

PLATINUM (7440-06-4) Pt Powdered form is highly reactive catalyst, and may cause fire and explosions on contact with many substances including oxidizers, acetone, strong acids, finely divided aluminum, dioxygen difluoride, ethyl alcohol, hydrazine, hydrogen peroxide, lithium, methyl hydroperoxide, nitrosyl chloride, ozonides, peroxymonosulfliric acid, red phosp] oms. Incompatible with ammonia, arsenic, chlorine dioxide, hydrogen, methyl hydroperoxide, selenium, tellurium, vanadium dichloride. 

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