Carbonic acid chromium

Major constituents (greater than 5 mg/L) Minor constituents (O.Ol-lO.Omg/L) Selected trace constituents (less than 0.1 mg/L) Bicarbonate, calcium, carbonic acid, chloride, magnesium, silicon, sodium, sulfate Boron, carbonate, fluoride, iron, nitrate, potassium, strontium Aluminum, arsenic, barium, bromide, cadmium, chromium, cobalt, copper, gold, iodide, lead, Uthium, manganese, molybdenum, nickel, phosphate, radium, selenium, silver, tin, titanium, uranium, vanadium, zinc, zirconium... 

The processes depend on the formation of the cyclohexadienyl anion intermediates in a favorable equilibrium (carbon nucleophiles from carbon acids with pKt > 22 or so), protonation (which can occur at low temperature with even weak acids, such as acetic acid) and hydrogen shifts in the proposed diene-chromium intermediates (25) and (26). Hydrogen shifts lead to an isomer (26), which allows elimination of HX and regeneration of an arene-chromium complex (27), now with the carbanion unit indirectly substituted for X (Scheme 9). 

Chromium Phosphides have been prepared from the elements or by the action of phosphorus vapour on potassium dichromate, or from carbon and chromium phosphate. These compounds have the appearance of grey powders, which are hardly attacked by dilute acids but are decomposed by alkalies. 

SYNS BASIC CHROMIUM CARBONATE CYRBONIC ACID, CHROMIUM SALT... 

Dibenzoic acid chromium is reported as produced when the mixture formed in the preparation of dibenzene chromium by the Grignard reaction is treated with carbon dioxide (227). Substitution reactions for the hydrogen atoms in the rings of the complex, such as are known to occur readily for ferrocene, do not occur in this case (90). 

SeC, Carbon selenide chromium complex, 21 1, 2 Sep20, Selenium diiluoride oxide, 24 28 Sep4, Selenium tetrailuoride, 24 28 SeNOC7H,3, Carbamodiselenoic acid, dimethyl-, l-methyl-2-oxopropyl ester, 24 132... 

ScCI3, Scandium chloride, 22 39 ScCl3Cs, Cesium scandium chloride, 22 23 ScC1303C 2Hm, Scandium(lll), trichloro-tris(tetrahydrofuran)-, 21 139 Sc2CI,Cs3, Cesium scandium chloride, 22 25 SeC, Carbon selenide, chromium complex, 21 1, 2 Se2C, Carbon diselenide, 21 6, 7 Se2NC3H,i, Diselenocaibamic acid, N,N-di-ethyl-,... 

CARBONIC ACID GAS (124-38-9) COj Reacts violently with strong bases and alkali metals. Violent ignition or explosive reaction may occur when dusts of chemically active metals such as aluminum, chromium, lithium, manganese, magnesium, potassium, sodium, titanium, zirconiiun, and some magnesium-aluminum alloys are suspended and heated in carbon dioxide. The presence of strong oxidizers will increase the potential for ignition or explosions of metal dusts. 

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