Ammonium molybdate tetrahydrate

Ammonium Molybdate Solution (5%) Dissolve 50 g of ammonium molybdate tetrahydrate, (NLLOeMoyO rdL O, in 900 mL of warm water, cool to room temperature, dilute to 1000 mL with water, and mix. 

Nelson s Color Reagent Dissolve 25.0 g of ammonium molybdate tetrahydrate in 300 mL of water. Carefully add... 

Malachite Green Reagent Dissolve 50 mg malachite green (final concentration 1 mg/ml) (Ajax Chemicals, NSW, Australia) and 500 mg ammonium molybdate tetrahydrate (final concentration 100 mg/ml) (Ajax Chemicals) in 50 ml of 1 M hydrochloric acid (HCl) followed by filtration through a 0.45 gLm filter. Store the solution at room temperature (22°) in the dark for a maximum of 8 weeks. 

US EPA Method 326.0 allows the combination of suppressed conductivity detection and postcolumn derivatization for UV absorbance detection, as schematically depicted in Figure 8.45. A volume of sample (225 pL) is introduced into an ion chromatography system. After separation and eluent suppression, standard anions and oxyhalide ions are measured using conductivity detection. The suppressed effluent from the conductivity detector is then combined with an acidic solution of potassium iodide (0.26 mol/L) containing a catalytic amoimt of ammonium molybdate tetrahydrate (43 pmol/L). The mixture is heated in the knitted reaction coil to 80 °C to facilitate complete reaction. The formed triiodide is measured by its UV absorption at 352 nm. Because KI is photosensitive, the KI/Mo PCR solution develops a light yellow color with time, even when stored under helium. Therefore, the PCR reservoir has to be protected from light by covering it with aluminum foil and should be pressimzed with helium. Under... 

Ammonium Molybdate Solution - Dissolve 40 g ammonium molybdate tetrahydrate, (NHJjMOj02. 4Hp, in ultra pure water and make up to 1000 ml. This solution should be stored in a bottle made of hard glass. 

Ammonium molybdate(VI) tetrahydrate Molybdic acid, hexaammonium salt, tetrahydrate (12027-67-7), 76, 78... 

Synonyms AHM Ammonium heptamolybdate Ammonium molybdate Ammonium paramolybdate Hexaammonium molybdate Molybdate, hexaammonium Molybdic acid, ammonium salt, tetrahydrate Definition Avail, commercially as the tetrahydrate Empiricai H24M07N6O24 H24M07N6O24 4H2O Formuia (NH4)6M07024 (NH4)6Mo7024 4H2O Properties M.w. 1163.79 (anhyd.), 1235.86 (tetrahydrate) Tetrahydrate Colorless to si. grnsh.-ylsh. cryst. sol. 430 g/l in water pract. insol. in alcohol releases water 90 C pH 5.0-5.5 (5% aq.) nonflamm. 

Molybdenum tungsten hydroxide oxide phosphate, compd. with ethyl 2-(6-ethylamino)-3-(ethylimino)-2,7-dimethyl-3H-xanthen-9-yl) benzoate. See Pigment red 81 Molybdenum white. See Calcium-zinc-molybdenum complex Zinc molybdate Molybdic acid, ammonium salt, tetrahydrate. 

Si-CT and Al-CT after calcination at 723 K were used as supports for Mo and Ni. Catalytic activities were evaluated by using hydrogenation of pyrene. Mo was loaded into Si-CT by impregnation with an aqueous solution of ammonium molybdate(VI) tetrahydrate, and Ni from nickel(II) nitrate hexahydrate was then loaded by impregnation. The NiMo catalysts... 

Acid molybdate reagent (manual method) Dissolve 38 g of ammonium heptamolybdate tetrahydrate, (NH4)6Mo7024 4H2O, in 300 mL of pure water. Add this solution to 300 mL of sulphuric acid (reagent 1). Do not add acid to molybdate K stored protected from direct sunlight, the reagent is stable for several months. 

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