RAPID DETERMINATION OF Zn IN Al ALLOYS BY EDTA TITRATION METHOD

Title: RAPID DETERMINATION OF Zn IN Al ALLOYS BY EDTA TITRATION METHOD (in Japanese)

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Abstract

Zinc in the presence of aluminum and tin was titrated with EDTA. To avoid the interference of aluminum and tin, NH/sub 4/F was used. The method was successfully applied to the determination of zinc in aluminum alloys. The procedure is as follows: Weigh a 2 g sample into a beaker and dissolve it in 30ml of 20% NaOH solution and 5ml of 30% H/sub 2/O/sub 2/. After boiling out the excess H/sub 2/O/sub 2/, add Na/sub 2/S solution, cool, dilute to volume in a 500- ml volumetric flask, and filter through a dry filter paper. Fe, Mn, Cu, Ni, Ti, Ca, Mg, etc., remain on the filter paper as hydrous oxides or sulfides. Pipet 10 to 50 ml of the filtrate into a beaker and dilute to about 70ml with water. Make it slightiy acid with HCl and 3 g of NH/sub 4/F (to mask aluminum and tin) and 5ml of 50% CH/sub 3/COONH/sub 4/ solution. Adjust the solution to a pH of 5 to 6 with 1 to 1 NH/sub 4/OH. Heat at 70 to 80 deg C, add 3 to 4 drops of indicator (PAN), mix and titrate with 0.005M EDTA solution. Then back-titrate the excess EDTA withmore » 0.005M CuSO/sub 4/ solution. (auth)« less

Authors:: Wakamatsu, S

Publication Date:: 1960-01-01

Research Org.:: Originating Research Org. not identified

OSTI Identifier:: 4078380

NSA Number:: NSA-15-005968

Resource Type:: Journal Article

Journal Name:: Nippon Kinzoku Gakkaishi (Japan)

Additional Journal Information:: Journal Volume: Vol: 24; Other Information: Orig. Receipt Date: 31-DEC-61

Country of Publication:: Country unknown/Code not available

Language:: Japanese

Subject:: CHEMISTRY; ACETATES; ALUMINUM ALLOYS; AMMONIUM COMPOUNDS; BOILING; CALCIUM; COOLING; COPPER; COPPER SULFATES; EDTA; FILTERS; FLUORIDES; HYDROCHLORIC ACID; HYDROGEN PEROXIDES; HYDROXIDES; IRON; MAGNESIUM; MANGANESE; NICKEL; PAPER; QUANTITATIVE ANALYSIS; SODIUM HYDROXIDES; SODIUM SULFIDES; SOLUTIONS; SULFIDES; TEMPERATURE; TIN; TITANIUM; USES; ZINC

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                    Wakamatsu, S. RAPID DETERMINATION OF Zn IN Al ALLOYS BY EDTA TITRATION METHOD.  Country unknown/Code not available: N. p., 1960. 
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                    Wakamatsu, S. RAPID DETERMINATION OF Zn IN Al ALLOYS BY EDTA TITRATION METHOD.  Country unknown/Code not available.

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                    Wakamatsu, S. Fri .  
        "RAPID DETERMINATION OF Zn IN Al ALLOYS BY EDTA TITRATION METHOD".  Country unknown/Code not available.

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@article{osti_4078380,

  title        = {RAPID DETERMINATION OF Zn IN Al ALLOYS BY EDTA TITRATION METHOD},

  author       = {Wakamatsu, S},

  abstractNote = {Zinc in the presence of aluminum and tin was titrated with EDTA. To avoid the interference of aluminum and tin, NH/sub 4/F was used. The method was successfully applied to the determination of zinc in aluminum alloys. The procedure is as follows: Weigh a 2 g sample into a beaker and dissolve it in 30ml of 20% NaOH solution and 5ml of 30% H/sub 2/O/sub 2/. After boiling out the excess H/sub 2/O/sub 2/, add Na/sub 2/S solution, cool, dilute to volume in a 500- ml volumetric flask, and filter through a dry filter paper. Fe, Mn, Cu, Ni, Ti, Ca, Mg, etc., remain on the filter paper as hydrous oxides or sulfides. Pipet 10 to 50 ml of the filtrate into a beaker and dilute to about 70ml with water. Make it slightiy acid with HCl and 3 g of NH/sub 4/F (to mask aluminum and tin) and 5ml of 50% CH/sub 3/COONH/sub 4/ solution. Adjust the solution to a pH of 5 to 6 with 1 to 1 NH/sub 4/OH. Heat at 70 to 80 deg C, add 3 to 4 drops of indicator (PAN), mix and titrate with 0.005M EDTA solution. Then back-titrate the excess EDTA with 0.005M CuSO/sub 4/ solution. (auth)},

  doi          = {},

  url          = {https://www.osti.gov/biblio/4078380},
  journal      = {Nippon Kinzoku Gakkaishi (Japan)},
number       = ,

  volume       = Vol: 24,

  place        = {Country unknown/Code not available},

  year         = {1960},

  month        = {1}

}

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