Chromate
... or chromat, and their derived terms, may refer to: Chromate and dichromate, ions Monochromate, an ion Trichromate, an ... This disambiguation page lists articles associated with the title Chromate. If an internal link led you here, you may wish to ... ion Tetrachromate, an ion Chromate conversion coating, a method for passivating metals Monochromacy (monochromate) having one ...
Calcium chromate
... is an inorganic compound with the formula CaCrO4, i.e. the chromate salt of calcium. It is a bright yellow ... Calcium chromate is formed from the salt metathesis reaction of sodium chromate and calcium chloride: Na2CrO4 + CaCl2 → CaCrO4 ... The compound is occasionally used as a yellow inorganic pigment, or a corrosion inhibitor as part of the chromate conversion ... Occupational Safety And Health Guideline For Calcium Chromate Archived August 8, 2007, at the Wayback Machine IARC (2012) [17- ...
Potassium chromate
... is the inorganic compound with the formula K2CrO4. This yellow solid is the potassium salt of the chromate ... Tarapacaite is the natural, mineral form of potassium chromate. It occurs very rarely and until now is known from only few ... When treated with lead(II) nitrate, it gives an orange-yellow precipitate, lead(II) chromate. Unlike the less expensive sodium ... It is a common laboratory chemical, whereas sodium chromate is important industrially. Two crystalline forms are known, both ...
Caesium chromate
... or cesium chromate is an inorganic compound with the formula Cs2CrO4. It is a yellow crystalline solid that is ... Caesium chromate is mainly obtained from the reaction of chromium(VI) oxide with caesium carbonate, wherein carbon dioxide gas ... Therein, caesium vapour was produced by reaction of caesium chromate with silicon, boron, or titanium as reducing agents. The ... ISBN 0-8493-0462-8.. Liebhafsky, H. A.; Winslow, A. F. (1947), "Cesium Chromate Photo‐Tube Pellets", Journal of Applied Physics ...
Cadmium chromate
... is the inorganic compound with the formula CdCrO4. It is relevant to chromate conversion coating, which is ... Chromate species take on their distinctive yellow color when coated. NIOSH Pocket Guide to Chemical Hazards. "#0087". National ... In conversion coating chromate reacts with these metals to prevent corrosion, retain electrical conductivity, and provide a ...
Beryllium chromate
... is claimed to be obtained from the reaction of beryllium hydroxide and chromium trioxide: Be(OH)2 + CrO3 → ... Beryllium chromate is a hypothetical inorganic compound, with the chemical formula of BeCrO4.[citation needed] It is predicted ... "Noble gas bound beryllium chromate and beryllium hydrogen phosphate: a comparison with noble gas bound beryllium oxide". RSC ... BeCrO4 + H2O The reaction of potassium chromate and beryllium sulfate is claimed to produce beryllium hydroxide: BeSO4 + ...
Sodium chromate
... is a strong oxidizer. Chromate and dichromate As with other Cr(VI) compounds, sodium chromate is carcinogenic. ... "Sodium chromate". inchem. Retrieved 2008-06-20. Record of Sodium chromate in the GESTIS Substance Database of the Institute for ... even 350 C in the corresponding potassium chromate system). Subsequent to its formation, the chromate salt is converted to ... Sodium chromate is the inorganic compound with the formula Na2CrO4. It exists as a yellow hygroscopic solid, which can form ...
Zinc chromate
... can also be synthesized by using neutral potassium chromate (K2CrO4) and zinc sulfate (ZnSO4), which forms a ... Zinc chromate, ZnCrO4, is a chemical compound containing the chromate anion, appearing as odorless yellow powder or yellow- ... "ZINC CHROMATE - CAMEO Chemicals". Retrieved 24 March 2011. "OHSA Guideline for Zinc Chromate". Occupational Safety and Health ... Davies, J.M. (May 1984). "Lung cancer mortality among workers making lead chromate and zinc chromate pigments at three English ...
Chromate ester
... and aqueous chromate ions, and tend to react via redox reactions to liberate chromium(IV). Chromate esters are the key reactive ... A chromate ester is a chemical structure that contains a chromium atom (symbol Cr) in a +6 oxidation state that is connected ... Chromate esters of allyl alcohols may isomerize via formal [3,3]-sigmatropic shift to give rearranged enone products. An ... The Cr itself is in its chromate form, with several oxygens attached, and the Cr-O-C attachment makes this chemical group ...
Strontium chromate
... is an inorganic chemical compound with the formula SrCrO4. Strontium chromate is prepared from strontium ... Strontium chromate is approximately 30 times more soluble in water at 100 °C than at room temperature. Therefore, the yellow ... leaving the chromate or dichromate in solution. Corrosion inhibitor in pigments In electrochemical processes to control ... Chromates, Strontium compounds, Inorganic pigments, All stub articles, Inorganic compound stubs). ...
Ammonium chromate
"Ammonium chromate". Sigma-Aldrich Co., Ammonium chromate. Retrieved on 28-04-2014. Information preview for Ammonium chromate, ... Ammonium chromate is a salt with the formula (NH4)2CrO4. It forms yellow, monoclinic crystals; made from ammonium hydroxide and ... It is often used in photography, textile printing, and fixing chromate dyes on wool. It is also used as an analytical reagent, ...
Barium chromate
Adding barium chromate enhances the life of the bath by adding to the chromic acid concentration. Barium chromate is an ... Using zinc chromate as a standard, it was discovered that barium chromate is both genotoxic and cytotoxic. The cytotoxicity was ... Barium chromate is toxic. Chromates, when pulverized and inhaled, are carcinogens. John Rumble (June 18, 2018). CRC Handbook of ... Barium chromate, named barium tetraoxochromate(VI) by the IUPAC, is a yellow sand like powder with the formula BaCrO4. It is a ...
Magnesium chromate
This chromate can be manufactured as a powder. Before 1940, the literature about magnesium chromate and its hydrates was sparse ... "Magnesium chromate hydrate, 99.8% (metals basis)". Us.vwr.com. Retrieved 2013-07-16. "Item # MG-401, Heavy Magnesium Chromate ... Hill, Arthur E.; Soth, Glenn C.; Ricci, John E. (1940). "The Systems Magnesium Chromate-Water and Ammonium Chromate-Water from ... Magnesium chromate is a chemical compound, with the formula MgCrO4. It is a yellow, odorless, water-soluble salt with several ...
Silver chromate
... is usually produced by the salt metathesis reaction of potassium chromate (K2CrO4) and silver nitrate (AgNO3) ... Robbins, David J.; Day, Peter (1977-09-01). "Why is silver chromate red? The 4.2 K polarized electronic spectrum of chromate in ... of silver chromate is rather unlike other chromates which are typically yellow to yellowish orange in appearance. This ... As for all chromates, which are chromium(VI) species, the compound poses a hazard of toxicity, carcinogenicity and genotoxicity ...
Lead(II) chromate
... can be produced by treating sodium chromate with lead salts such as lead(II) nitrate or by combining lead(II ... Lead chromate is treated with great care in its manufacture, the main concerns being dust of the chromate precursor. "Extensive ... Crocoite Iranite Safety (MSDS) data for lead chromate Chemical Profile for lead chromate J.T. Baker MSDS Quareni, S.; de Pieri ... Two polymorphs of lead chromate are known, orthorhombic and the more stable monoclinic form. Monoclinic lead chromate is used ...
Hagdale Chromate Railway
The Hagdale Chromate Railway was a 2 ft 6 in (762 mm) narrow-gauge railway on the Isle of Unst, in the Shetland Islands. Built ...
Europium(III) chromate
... chromate is 15.9 K. Above 700 °C, europium(III) chromate begins to decompose into europium chromite (EuCrO3). 2EuCrO4 → 2 ... Europium(III) chromate is a chemical compound composed of europium, chromium and oxygen with europium in the +3 oxidation state ... To obtain europium(III) chromate, an equimolar solution of europium(III) acetate and chromium(IV) oxide is dried in a vacuum at ... Another way to obtain europium(III) chromate is by reacting stoichiometric amounts of europium(III) nitrate hexahydrate and ...
Nickel(II) chromate
Nickel chromate is dark in colour, unlike most other chromates which are yellow. The infrared spectrum of nickel chromate show ... Precipitates of Ni2+ ions with chromate produce a brown substance that contains water. The structure of nickel chromate is the ... Nickel(II) chromate can be formed in the lab by heating a mixture of chromium(III) oxide and nickel oxide at between 700 °C and ... Nickel(II) chromate (NiCrO4) is an acid-soluble compound, red-brown in color, with high tolerances for heat. It and the ions ...
Iron(III) chromate
... is the iron(III) salt of chromic acid with the chemical formula Fe2(CrO4)3. Iron(III) chromate was ... It may be formed by the reaction of potassium chromate and iron(III) nitrate. This reaction forms iron(III) chromate and ... Chromates, Iron(III) compounds, Oxidizing agents, All stub articles, Inorganic compound stubs). ...
Chromate and dichromate
In an aqueous solution, chromate and dichromate ions can be interconvertible. potassium chromate potassium dichromate Chromates ... Normally the chromate solution is further processed to make chromium metal, but a chromate salt may be obtained directly from ... Chromates and dichromates are used in chrome plating to protect metals from corrosion and to improve paint adhesion. Chromate ... Chromate salts contain the chromate anion, CrO2− 4. Dichromate salts contain the dichromate anion, Cr 2O2− 7. They are ...
Chromate conversion coating
... depending on the chromate layer's thickness. The protective effect of chromate coatings on zinc is indicated by color, ... "Effects of chromate and chromate conversion coatings on corrosion of aluminum alloy 2024-T3". Surface and Coatings Technology, ... "Evaluation of chromate passivation and chromate conversion coating on 55% Al-Zn coated steel". Surface and Coatings Technology ... For aluminum, the chromate conversion bath can be simply a solution of chromic acid. The process is rapid (1-5 min), requires a ...
Di-tert-butyl chromate
... is an alkoxide with the formula CrO2(OC(CH3)3)2. It is prepared by treatment of t-butanol with chromic ... Like other forms of hexavalent chromium, di-tert-butyl chromate is classified as a potential carcinogen by the United States ... Amirthalingam, V.; Grant, D. F.; Senol, A. (1972). "The crystal structure and absolute configuration of cedryl chromate". Acta ... Freeman, Fillmore (2001-04-15), "Di-tert-butyl Chromate", Encyclopedia of Reagents for Organic Synthesis, John Wiley & Sons, ...
Chromic acid
0138". National Institute for Occupational Safety and Health (NIOSH). "Chromic acid and chromates". Immediately Dangerous to ... Hexavalent chromium compounds (including chromium trioxide, chromic acids, chromates, chlorochromates) are toxic and ... "Equilibria of chromate(VI) species in acid medium and ab initio studies of these species". Polyhedron. 16 (21): 3835-3846. doi: ... Chromates, Oxidizing agents, Oxidizing acids, Mineral acids, Transition metal oxoacids). ...
List of inorganic compounds
"Ammonium chromate". pubchem.ncbi.nlm.nih.gov. Retrieved 2022-11-22. PubChem. "Ammonium Chloride". pubchem.ncbi.nlm.nih.gov. ... "Barium chromate". pubchem.ncbi.nlm.nih.gov. Retrieved 2022-11-22. PubChem. "Barium ferrite". pubchem.ncbi.nlm.nih.gov. ... NH4Br Ammonium chromate - [NH4]2CrO4 Ammonium cerium(IV) nitrate - [NH4]2[Ce(NO3)6] Ammonium cerium(IV) sulfate - [NH4]4[Ce(SO4 ... BaCl2 Barium chromate - BaCrO4 Barium ferrate - BaFeO4 Barium ferrite - BaFe12O19 Barium fluoride - BaF2 Barium hydroxide - Ba( ...
Molybdenum
Diphenylcarbazide
Chromates and molybdates produce the same reaction. The major drawback of the test is the deterioration of stock solution of ... Reacting a Diphenylcarbazide with Chromium (VI) compounds, such as chromates or dichromates produces diphenylcarbazone, which ...
Stool guaiac test
Chromate blood loss studies". Am. J. Med. 31 (2): 259-65. doi:10.1016/0002-9343(61)90114-0. PMID 13735596. Norfleet RG (April ...
Pyrotechnic composition
Barium chromate - used in delay compositions, e.g. in fireworks rockets Lead chromate - used in delay compositions Potassium ... Other possibilities include permanganates, chromates, and some oxides. Generally, the less the oxidizer, the slower the burning ...
Karin Aurivillius
"Studies on sulphates, selenates and chromates of mercury (II)." Acta Chem. Scand 15.9 (1961): 1932-1938. Aurivillius, K. A. R. ...
Chrome yellow
The pigment is derived from lead chromate, a chemical compound that was first synthesized in the early 1800s. The name "chrome ... Vauquelin was studying the mineral crocoite, also known as lead chromate, when he identified the presence of a new element, ... Chrome yellow had been commonly made by mixing solutions of lead nitrate and potassium chromate and filtering off the lead ... Kühn, H. and Curran, M., Chrome Yellow and Other Chromate Pigments, in Artists' Pigments. A Handbook of Their History and ...