Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Chemical compound
Ammonium chromate is a salt with the formula (NH4)2CrO4. It forms yellow, monoclinic crystals; made from ammonium hydroxide and ammonium dichromate; used in photography as a sensitizer for gelatin coatings. It is often used in photography, textile printing, and fixing chromate dyes on wool. It is also used as an analytical reagent, catalyst, and corrosion inhibitor. It is soluble in water, and, when applied, can cause irritation in the mucous membrane, eyes, respiratory tract, skin, etc. It may cause skin sensitization after prolonged contact. It is also known to be carcinogenic (cancer-causing), and it can cause tissue ulceration and injury to the liver and kidneys.[4]
^ abcPerry, Dale L. (2011). Handbook of Inorganic Compounds, Second Edition. Boca Raton, Florida: CRC Press. ISBN 978-1-43981462-8. Retrieved 2014-04-28.
^"Ammonium chromate".
^ abcSigma-Aldrich Co., Ammonium chromate. Retrieved on 28-04-2014.
^Information preview for Ammonium chromate, GIDEON
Ammoniumchromate is a salt with the formula (NH4)2CrO4. It forms yellow, monoclinic crystals; made from ammonium hydroxide and ammonium dichromate; used...
traditional method is by the ignition of copper chromate: 2 CuCrO 4 → 2 CuCrO 3 + O 2 Copper barium ammoniumchromate is the most commonly used substance for...
Silver chromate is an inorganic compound with formula Ag2CrO4 which appears as distinctively coloured brown-red crystals. The compound is insoluble and...
Glenn C.; Ricci, John E. (1940). "The Systems Magnesium Chromate—Water and AmmoniumChromate—Water from 0 to 75 °C". Journal of the American Chemical...
Ammonium dichromate is an inorganic compound with the formula (NH4)2Cr2O7. In this compound, as in all chromates and dichromates, chromium is in a +6 oxidation...
light–activated cross linking or hardening traits of potassium, sodium or ammoniumchromate and dichromate chemicals with glues and gelatin compounds. Roy Beck...
caesium dichromate (itself derived via salt metathesis from ammonium dichromate) yields the chromate following alkalinisation with caesium hydroxide: Cs2Cr2O7(aq)...
method, named after Karl Friedrich Mohr, potassium chromate is an indicator, giving red silver chromate after all chloride ions have reacted: 2Ag+ (aq) +...
sodium dichromate. Alternatively, it can be also obtained from potassium chromate by roasting chromite ore with potassium hydroxide. It is soluble in water...
transfer (OAT) agent. Examples include MnO− 4 (permanganate), CrO2− 4 (chromate), OsO4 (osmium tetroxide), and especially ClO− 4 (perchlorate). Notice...
quaternary ammonium alkyl- or aryl-substituted compounds ("quats"). Thus the product was originally called ammoniacal copper/quaternary ammonium. The copper...
Research Organization and covered by MIL-A-81801. A solution of ammonium phosphate, chromate and fluoride with voltages of up to 200 V can produce olive green...
reactions can occur. The case of the chromate ion provides a relatively simple example. In the predominance diagram for chromate, shown at the right, pCr stands...
for the thinnest blue/clear passivates to 4 μm for the thickest black chromates. Additionally, electroplated zinc articles may receive a topcoat to further...
dichromate. Sodium chromate is converted into other hexavalent chromium compounds such as chromium trioxide and various salts of chromate and dichromate....
considered to be sensitive and unstable Ammonium permanganate – a moderately powerful explosive Chromates: Barium chromate – used in delay compositions, e.g...
for copper(I) chromate, the Roman numeral indicates that copper ion is Cu+ and one can identify that the compound contains the chromate ion (CrO2−4)....
carrying a net charge of −1; its chemical formula is OH−. In contrast, an ammonium ion consists of one nitrogen atom and four hydrogen atoms, with a charge...
different from the other elements in group 6. Chromium only forms the chromates, CrO2− 4, Cr 2O2− 7, Cr 3O2− 10 and Cr 4O2− 13 ions which are all based...
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