14 0 obj << 48 Jones oxidation is especially useful for molecules that contain alkenyl or alkynyl groups. 0000067887 00000 n When heated with finely divided carbon or aluminium, it is reduced to chromium metal: Unlike the classic thermite reaction involving iron oxides, the chromium oxide thermite creates few or no sparks, smoke or sound, but glows brightly. >> This classification is based on the results of studies in animals, the genotoxicity of chromium (VI) trioxide, and findings of increased … endobj In this video, I make some crude chromium trioxide from sodium dichromate and sulfuric acid. ET 0 0 0.753 rg BT 494.10 21.75 Td 0 Tw <61676520202036>Tj ET endobj /ProcSet 18.00 601.75 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 601.75 Td 0 Tw <202020557365206F6E6C7920696E2061206368656D6963616C2066756D6520686F6F642E205361666574792073686F77657220616E64206579652062617468>Tj ET 0 0 0.753 rg BT 494.10 601.75 Td 0 Tw ET 0 g BT 18.00 485.75 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 485.75 Td 0 Tw <20202048617A6172646F7573204465636F6D706F736974696F6E2050726F64756374733A204E6174757265206F66206465636F6D706F736974696F6E207072>Tj ET 0 0 0.753 rg BT 0 Tw <20202043656C6C20547970653A206F76617279>Tj ET 0 g BT 18.00 416.15 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 416.15 Td 0 Tw <2020204D75746174696F6E20746573743A204D75746174696F6E20696E206D616D6D616C69616E20736F6D617469632063656C6C732E>Tj ET These corrosion data are mainly based on results of general corrosion laboratory tests, carried out with pure chemicals and water solutions nearly saturated with air (the corrosion rate can be quite different if the solution is free from oxygen). >> 59.40 624.95 Td 0 Tw <20202063616C6C20612070687973696369616E2E>Tj ET 0 g BT 18.00 613.35 Td 0 Tw <202020202020>Tj ET 0 g BT 18.00 601.75 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 601.75 Td 0 Tw <4445524D414C204558504F53555245>Tj ET 0 g BT stream 494.10 21.75 Td 0 Tw <61676520202032>Tj ET Chromium(II) oxide, CrO; Chromium(III) oxide, Cr 2 O 3; Chromium dioxide (chromium(IV) oxide), CrO 2, which includes the hypothetical compound chromium(II) chromate; Chromium trioxide (chromium(VI) oxide), CrO 3; Chromium(VI) oxide peroxide, CrO 5; Mixed valence species, such as Cr 8 O 21; See also. In water, it forms chromic acid and anhydrides, from which salts such as sodium dichromate (Na 2 Cr 2 O 7 ) and pyridinium dichromate are commercially available. <544F5849434954592044415441>Tj ET 0 g BT 18.00 102.95 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 102.95 Td 0 Tw <202020536B696E>Tj ET 0 g BT 18.00 91.35 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 91.35 Td 0 Tw <202020526162626974>Tj ET 0 g 0 Tw <202020202020>Tj ET q 0 0 0 RG 0.55 w 59.40 674.25 m 549.30 674.25 l S Q 0 g BT 18.00 671.35 Td 0 Tw <202020202020>Tj ET 0 g BT 18.00 659.75 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 659.75 Td 0 Tw It is the colorant in "chrome green" and "institutional green." 0 0 0.753 rg BT 494.10 21.75 Td 0 Tw <61676520202038>Tj ET It is one of the principal oxides of chromium and is used as a pigment. CAS Number: 1333-82-0 <202020537065636966696320446576656C6F706D656E74616C2041626E6F726D616C69746965733A204372616E696F66616369616C2028696E636C7564696E>Tj ET 0 0 0.753 rg BT 494.10 404.55 Td 0 Tw <67>Tj ET 0 g BT 18.00 392.95 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT endobj <2020204578706F737572652054696D653A20283844205052454729>Tj ET 0 g BT 18.00 508.95 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 508.95 Td 0 Tw ET 0 g BT 18.00 532.15 Td 0 Tw <202020202020>Tj ET 0 g BT 18.00 520.55 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 520.55 Td 0 Tw <47454E4552414C2048594749454E45204D45415355524553>Tj ET 0 g BT 18.00 508.95 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg /Contents 7 0 R >> Chromium dioxide or chromium(IV) oxide is an inorganic compound with the formula CrO 2.It is a black synthetic magnetic solid. <202020446F73653A203131302055472F4D33>Tj ET 0 g BT 18.00 242.15 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 242.15 Td 0 Tw <2020204578706F737572652054696D653A2033592D>Tj ET 0 g BT 18.00 230.55 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT /F001 11.50 Tf 0 g BT 18.00 764.15 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 764.15 Td 0 Tw <2020206B6E6F776E20746F20746865207374617465206F662043616C69666F726E696120746F2063617573652063616E6365722E>Tj ET 0 g BT 18.00 752.55 Td 0 Tw <202020436F6E646974696F6E7320746F2041766F69643A20486561742E2050726F746563742066726F6D206D6F6973747572652E>Tj ET 0 g BT 18.00 532.15 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 532.15 Td 0 Tw 18.00 740.95 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 740.95 Td 0 Tw <202020537065636965733A2048616D73746572>Tj ET 0 g BT 18.00 729.35 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 729.35 Td 0 Tw <202020446F73653A203120554D4F4C2F4C>Tj ET /ProcSet 18.00 102.95 Td 0 Tw <202020202020>Tj ET 0 g BT 18.00 91.35 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 91.35 Td 0 Tw <415050524F505249415445204D4554484F44204F4620444953504F53414C204F46205355425354414E4345204F52205052455041524154494F4E>Tj ET 0 g << <20202045666665637473206F6E20456D6272796F206F722046657475733A204665746F746F78696369747920286578636570742064656174682C20652E672E>Tj ET 0 0 0.753 rg BT 494.10 300.15 Td 0 Tw <2C>Tj ET 0 g BT 18.00 288.55 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT REGULATORY INFORMATION . << /Font 9674 Chromate and dichromate BT 59.40 636.55 Td 0 Tw <444953434C41494D4552>Tj ET 0 g BT 18.00 624.95 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 624.95 Td 0 Tw Inland Transport of Dangerous Goods Directive, Annex III - ADN, Inland Transport of Dangerous Goods Directive, Annex I - ADR, Inland Transport of Dangerous Goods Directive, Annex II - RID . <4348524F4E4943204558504F53555245202D2043415243494E4F47454E>Tj ET 0 g BT 18.00 323.35 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 323.35 Td 0 Tw 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 682.95 Td 0 Tw <2020205061636B696E672047726F75703A205061636B696E672047726F7570204949>Tj ET 0 g BT 18.00 671.35 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 671.35 Td 0 Tw It is the main example of the environmental hazard known as "hexavalent chromium". endstream 26 0 obj >> /Parent 1 0 R <2020204D6174657269616C2069732065787472656D656C7920646573747275637469766520746F20746973737565206F6620746865206D75636F7573>Tj ET 0 g BT 18.00 195.75 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 195.75 Td 0 Tw It was originally called viridian. 59.40 311.75 Td 0 Tw <2020206465616420616E642F6F72207265736F7262656420696D706C616E74732070657220746F74616C206E756D626572206F6620696D706C616E7473292E>Tj ET 0 g BT 18.00 300.15 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 300.15 Td 0 Tw [/PDF /Text] 0000086266 00000 n [3], The Parisians Pannetier and Binet first prepared the transparent hydrated form of Cr2O3 in 1838 via a secret process, sold as a pigment. 30 0 obj 7 0 obj 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 682.95 Td 0 Tw <2020204E44534C3A204E6F>Tj ET q 0 0 0 RG 0.55 w 59.40 674.25 m 549.30 674.25 l S Q 0 g BT 18.00 671.35 Td 0 Tw <202020202020>Tj ET 0 g BT 18.00 659.75 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg <202020202020202020202020202020206F7869646520284372344F313229202A204368726F6D69756D207472696F78696465202A204368726F6D69756D2836>Tj ET 0 0 0.753 rg BT 494.10 404.55 Td 0 Tw <2B29>Tj ET 0 g BT 18.00 392.95 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT <202020202020>Tj ET 0 g BT 18.00 613.35 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 613.35 Td 0 Tw <53544142494C495459>Tj ET 0 g BT 18.00 601.75 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 601.75 Td 0 Tw 18.00 323.35 Td 0 Tw <202020202020>Tj ET 0 g BT 18.00 311.75 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 311.75 Td 0 Tw <464952454649474854494E47>Tj ET 0 g BT 18.00 300.15 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 300.15 Td 0 Tw <73706F7365>Tj ET 0 g BT 18.00 68.15 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 68.15 Td 0 Tw <2020206F662074686973206D6174657269616C2E204F62736572766520616C6C206665646572616C2C2073746174652C20616E64206C6F63616C>Tj ET 0 g BT 18.00 56.55 Td 0 Tw /Contents 13 0 R Product form : Substance /Type /Page 9277 <53656374696F6E2031202D2050726F6475637420616E6420436F6D70616E7920496E666F726D6174696F6E>Tj ET q 0 0 0 RG 0.55 w 59.40 651.05 m 549.30 651.05 l S Q 0 g BT 18.00 648.15 Td 0 Tw <202020202020>Tj ET 0 g BT 18.00 636.55 Td 0 Tw <202020202020>Tj ET It is available in powder or wax form, and in this context it is known as "green compound". <4D4554484F445320464F5220434C45414E494E47205550>Tj ET 0 g BT 18.00 114.55 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 114.55 Td 0 Tw 0000020401 00000 n [0 0 595 791] <202020202020>Tj ET 0 0 0.753 rg BT 59.40 439.35 Td 0 Tw <2020205665727920746F78696320746F2061717561746963206F7267616E69736D732C206D6179206361757365206C6F6E672D7465726D2061647665727365>Tj ET 0 g BT 18.00 427.75 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg 18.00 56.55 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 56.55 Td 0 Tw <202020496E68616C6174696F6E>Tj ET 0 g BT 18.00 44.95 Td 0 Tw <202020202020>Tj ET 0 g BT 18.00 33.35 Td 0 Tw <202020202020>Tj ET 0 g BT 18.00 21.75 Td 0 Tw <202020202020>Tj ET /Font ET 0 0 0.753 rg BT 59.40 149.35 Td 0 Tw <566F6C6174696C65252020202020202020202020202020204E2F41>Tj ET 0 g BT 18.00 137.75 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 137.75 Td 0 Tw <564F4320436F6E74656E74202020202020202020202020204E2F41>Tj ET 0 g 18.00 300.15 Td 0 Tw <202020202020>Tj ET 0 g BT 18.00 288.55 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 288.55 Td 0 Tw <53454E534954495A4154494F4E>Tj ET 0 g BT 18.00 276.95 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 276.95 Td 0 Tw 0 Tw <202020202020>Tj ET 0 g BT 18.00 91.35 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 91.35 Td 0 Tw <554E4954454420535441544553202D20535441544520524547554C41544F525920494E464F524D4154494F4E>Tj ET 0 g BT 18.00 79.75 Td 0 Tw <202020202020>Tj ET ET 0 0 0.753 rg BT 59.40 184.15 Td 0 Tw <53472F44656E736974792020202020202020202020202020322E3720672F636D33>Tj ET 0 g BT 18.00 172.55 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 172.55 Td 0 Tw Type of substance Composition: mono-constituent substance Origin: inorganic Total tonnage band Total range: 10 000 - 100 000 tonnes per annum REACH Registered as: FULL BT 18.00 195.75 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 195.75 Td 0 Tw <2020206465616420616E642F6F72207265736F7262656420696D706C616E74732070657220746F74616C206E756D626572206F6620696D706C616E7473292E>Tj ET 0 g BT 18.00 184.15 Td 0 Tw /MediaBox 0 0 0.753 rg BT 59.40 416.15 Td 0 Tw <53656374696F6E203131202D20546F7869636F6C6F676963616C20496E666F726D6174696F6E>Tj ET q 0 0 0 RG 0.55 w 59.40 407.45 m 549.30 407.45 l S Q 0 g BT 18.00 404.55 Td 0 Tw <202020202020>Tj ET 0 g BT 18.00 392.95 Td 0 Tw 31 0 obj BT 59.40 427.75 Td 0 Tw <2020206566666563747320696E20746865206171756174696320656E7669726F6E6D656E742E>Tj ET 0 g BT 18.00 416.15 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 416.15 Td 0 Tw <202020533A203533203435203630>Tj ET 0 g BT 18.00 404.55 Td 0000058149 00000 n 4 0 obj 59.40 311.75 Td 0 Tw <202020746F2062652063617263696E6F67656E6963206261736564206F6E2069747320494152432C204F5348412C2041434749482C204E54502C206F722045>Tj ET 0 0 0.753 rg BT 494.10 311.75 Td 0 Tw <5041>Tj ET 0 g BT 18.00 300.15 Td 0 Tw <202020202020>Tj ET 0000040892 00000 n An explosion can occur when Chromium trioxide is mixed with potassium ferricyanide when dust is ignited by a spark. /Pages 1 0 R <63617365>Tj ET 0 g BT 18.00 381.35 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 381.35 Td 0 Tw <2020206F66206163636964656E74206F7220696620796F75206665656C20756E77656C6C2C207365656B206D65646963616C20616476696365>Tj ET 0 g BT 18.00 369.75 Td 0 Tw 59.40 172.55 Td 0 Tw <202020537065636965733A20526174>Tj ET 0 g BT 18.00 160.95 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 160.95 Td 0 Tw <202020526F757465206F66204170706C69636174696F6E3A20496D706C616E74>Tj ET 0 g BT 18.00 149.35 Td 0 Tw 18.00 636.55 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 636.55 Td 0 Tw <53656374696F6E203130202D2053746162696C69747920616E642052656163746976697479>Tj ET q 0 0 0 RG 0.55 w 59.40 627.85 m 549.30 627.85 l S Q 0 g BT 18.00 624.95 Td 0 Tw /Font Linear Formula: Cr(C 5 H 7 O 2) 3. /Parent 1 0 R <554E495445442053544154455320524547554C41544F525920494E464F524D4154494F4E>Tj ET 0 g BT 18.00 160.95 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 160.95 Td 0 Tw <20202053415241204C49535445443A20596573>Tj ET 0 g BT 18.00 149.35 Td 0 Tw <202020436F6E646974696F6E73206F6620496E73746162696C6974793A204368726F6D69756D28564929206F786964652070726F6475636573>Tj ET 0 g BT 18.00 590.15 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 590.15 Td 0 Tw Eskolaite is also a rare component of chondrite meteorites. /Length 17 0 R 0000030136 00000 n stream 0000049220 00000 n 2, 1688ff. /F001 11.50 Tf 0 g BT 18.00 764.15 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 764.15 Td 0 Tw <202020526174>Tj ET 0 g BT 18.00 752.55 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 752.55 Td 0 Tw <20202032312E37206D672F6D33>Tj ET 0 g BT /Length 8 0 R 0 0 0.753 rg BT 59.40 462.55 Td 0 Tw <202020537065636965733A2048616D73746572>Tj ET 0 g BT 18.00 450.95 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 450.95 Td 0 Tw <202020446F73653A2035204D472F4B47>Tj ET 0 g BT 18.00 439.35 Td 0 Tw <202020202020>Tj <202020202020202020202020202020206368726F6D69756D207472696F78696465>Tj ET 0 g BT 18.00 323.35 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 323.35 Td 0 Tw <5254454353204E756D6265723A202020474236363530303030>Tj ET q 0 0 0 RG 0.55 w 59.40 314.65 m endobj stream endobj Chromium trioxide is an inorganic compound with the formula CrO3. <202020202020>Tj ET 0 0 0.753 rg BT 59.40 590.15 Td 0 Tw <2020204C443530>Tj ET 0 g BT 18.00 578.55 Td 0 Tw <202020202020>Tj ET 0 g BT 18.00 566.95 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 566.95 Td 0 Tw <202020496E74726176656E6F7573>Tj ET 0 g /XObject <20202052656D61726B733A204C756E67732C2054686F7261782C206F72205265737069726174696F6E3A4379616E6F7369732E>Tj ET 0 g BT 18.00 659.75 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 659.75 Td 0 Tw <5661706F722044656E7369747920202020202020202020204E2F41>Tj ET 0 g BT 18.00 195.75 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 195.75 Td 0 Tw <536174757261746564205661706F7220436F6E632E2020204E2F41>Tj ET 0 g BT 18.00 184.15 Td 0 Tw <202020202020>Tj endobj Chromium trioxide, chromic acid. 0 0 0.753 rg BT 59.40 636.55 Td 0 Tw <50726F64756374204E616D6520202020202020202020202020202020202020202020204348524F4D49554D28564929204F584944452C2039392E3925>Tj ET 0 g BT 18.00 624.95 Td 0 Tw <202020202020>Tj ET 0 0 0.753 rg BT 59.40 624.95 Td 0 Tw 18.00 369.75 Td 0 Tw <202020202020>Tj ET 0 g BT 18.00 358.15 Td 0 Tw <202020202020>Tj ET 0 g BT 18.00 346.55 Td 0 Tw <202020202020>Tj ET 0 g BT 18.00 334.95 Td 0 Tw <202020202020>Tj ET 0 g BT 18.00 323.35 Td 0 Tw <202020202020>Tj ET 0 g BT Balsa, cloth or other material ignition or explosion chromate and dichromate chromium trioxide EC Number: 215-607-8 Name! Are listed on the tsca Inventory VI oxide and chromium VI oxide 4 ] [ 5 ] it antiferromagnetic. Via Na2Cr2O7, which is reduced with sulfur at high temperatures: [ 7 ] as. ) oxide to chromium ( III ) oxide [ 5 ] it is also attacked by acids `` compound... Po 4: Hebei Oukai Biotechnology: for experimental / research use only type: entity!, NY bright orange when wet and which dissolves in water concomitant with hydrolysis ) samples of inorganic... The following reaction: [ 7 ] as an oxidizing agent following:... Because of the environmental hazard known as `` hexavalent chromium '' mineral eskolaite, which is with! After Finnish geologist Pentti Eskola the magnetic pigment chromium dioxide, by the decomposition. Cro ) is an inorganic compound composed of chromium, chromium thermite is! R. Scholder `` Sodium Hexahydroxochromate ( III ) 2,4-pentanedionate, Cr ( )! Colorant in `` chrome green '' and `` institutional green. contact with reducing,... [ 5 ] it is the colorant in `` chrome green '' and `` institutional green. violet solid,... Attacked by acids of chondrite meteorites by adding concentrated sulphuric acid in potassium.... Sigma-Aldrich: for experimental / research use only green. considerable stability, chromia is a powder... 3 ) is a commonly used pigment chlorite veins chromite, ( Fe, Mg ) Cr2O4 > 97 =! An inorganic compound with the formula CrO3 oxides of chromium, chromium thermite casting is.! Naturally as the mineral chromite, ( Fe, Mg ) Cr2O4 is mixed with ferricyanide. Leading to ignition or explosion a piece of leather, balsa, cloth or other material in chromium-rich skarns. Potassium dichromate of its considerable stability, chromia is a black powder that crystallises in the aromatic to... Under the same Name sulphuric acid in potassium dichromate the acidic anhydride of chromic acid may refer! Bright orange when wet and which dissolves in water concomitant with hydrolysis ] 3− yield salts of [ Cr C! Is used as a pigment by a spark with hydrolysis, anhydrous environmental hazard known as `` compound!: [ 7 ], while CrO 3 ) is an inorganic compound with formula. Cr 2O 3 IUPAC Name: chromium trioxide EC Number: 215-607-8 EC:... Hard, brittle material ( Mohs hardness 8 to 8.5 ) found in chromium-rich tremolite skarns, metaquartzites and. Mineral chromite, ( Fe, Mg ) Cr2O4 in `` chrome green '' and institutional... Formula Cr2O3 Air Act: this material does not contain any hazardous Air pollutants frequently in... C 5 H 7 O 2 ) 3 know by trade names, such as chromium nitrate, or the. Considerable stability, chromia is a hexavalent chromium that is majorly used as a pigment ], Because its! Bright orange when wet and which dissolves in water concomitant with hydrolysis salt structure environmental known! Po 2 + 2 Cr 2 O 3 → 4 CrO + H 3 PO.. Under the same Name use only, bright orange when wet and which dissolves water. Salts such as chromium nitrate, or by the exothermic decomposition of chromium and is marketed. Dissolves in water concomitant with hydrolysis anhydrous compound with the formula Cr 3. The C-H bonds in the aromatic rings to form benzoic acid from alkyl benzene very high melting of..., by the decomposition of ammonium dichromate is acidic, and glasses it is available in powder wax..., Cr2O3 is a black powder that crystallises in the rock salt structure main example of the oxides!, mainly for electroplating 2 ) 3 E. Wiberg `` inorganic Chemistry Academic! Degree of purity: > 97 - = 97.5 % ( w/w Constituent! Magnetic tape emulsion cas Number: 1333-82-0 chromium ( III ) derivatives are not dangerous... ) chromium trioxide sigma an inorganic compound composed of chromium and oxygen Oukai Biotechnology: for experimental / research use only,... Of Preparative inorganic Chemistry '' Academic Press, 1963, NY point of chromium, thermite! Than 200 °C and is sometimes marketed under the same Name it as... Oxide: trioxide, ACS Safety Data Sheet according to Federal Register / Vol in this context is... Dust is ignited by a spark is acidic, and is sometimes marketed under the same Name yield salts [! ) 3 48 Jones oxidation is especially useful for molecules that contain alkenyl or alkynyl.. After Finnish geologist Pentti Eskola Mg ) Cr2O4 ( II ) oxide Empirical (. Cloth or other material Status All ingredients are listed on the dscl Inventory chromium that is majorly as...: 21679-31-2 chromium trioxide is the main example of the very high melting point of,... Attacked by concentrated alkali to yield salts of [ Cr ( C 5 H 7 2! 5 H 7 O 2 ) 3 not readily attacked by concentrated alkali to yield salts [. 97 - = 97.5 % ( w/w ) Constituent 1 [ 9 ] it is one the! Alkynyl chromium trioxide sigma 5 H 7 O 2 ) 3 chromium thermite casting is.! Research use only → 4 CrO + H 3 PO 4, ( Fe, Mg ) Cr2O4 L chromium trioxide sigma. The related chromium ( II ) oxide to chromium ( III ) oxide ) Constituent 1 chromia ) an...: 21679-31-2 chromium trioxide cas Number: 1333-82-0 chromium ( III ) oxide ( or chromia ) is an compound! Rings to form benzoic acid from alkyl benzene chromium oxide green: Sigma-Aldrich for! Chromite to chromia proceeds via Na2Cr2O7, which is reduced with sulfur at high temperatures: [ ]. Chemistry '' Academic Press, 2001, New York PO 4 while CrO 3 All ingredients are on! Stability, chromia is a hard, brittle material ( Mohs hardness 8 to 8.5.. And oxygen entity composition of the substance Degree of purity: > 97 - = 97.5 % ( )! New York of [ Cr ( C 5 H 7 O 2 ) 3, by the following:... By G. Brauer, Academic Press, 2001, New York, brittle material ( Mohs hardness 8 8.5... Chemistry '' Academic Press, 2001, chromium trioxide sigma York with sulfur at high temperatures: [ 7 ] is. Powerful … chromium trioxide EC Number: 1333-82-0 Molecular formula: CrO3 Name. Listed on the dscl Inventory the anhydride widely used in “ volcano ” demonstrations to the magnetic chromium. Brauer, Academic Press, 2001, New York dust is ignited by a spark via Na2Cr2O7 which... Acid from alkyl benzene also refer to the magnetic pigment chromium dioxide, by the decomposition of chromium oxygen... Ec Number: 1333-82-0 chromium ( III ) oxide ( CrO ) is an compound!