21. Both ferricyanide and dichromate are tightly regulated for sewer disposal from commercial premises in some areas. 22. Fixatives containing mercuric chloride or potassium dichromate are toxic, making disposal as hazardous waste costly. 23. This is coated with a dilute solution of potassium dichromate and dried in low light conditions. 24. For gum printing a solution of gum arabic is mixed with either potassium or ammonium dichromate . 25. Pyrosulfate, pyrophosphate, and dichromate adopt structures similar to that of Mn 2 O 7. 26. He improved fixation methods, for instance, his solution of potassium dichromate and osmium tetroxide. 27. It is a vaguely described chemical, despite many well-defined chromates and dichromates being known. 28. It can be produced by mixing sulfuric acid with dichromate , and is a strong oxidizing agent. 29. Golgi's staining is achieved by impregnating fixed nervous tissue with potassium dichromate and silver nitrate. 30. Subtracting the amount of excess dichromate from the initial amount, gives the amount of ethanol present.
