DE2043600

1,271,338. Indicator for nickel ions. MERCK PATENT G.m.b.H. 30 Oct., 1970 [3 Sept., 1970], No. 51684/70. Heading B1X part A. An indicator for the detection of nickel ions comprises an absorbent carrier impregnated with 0.1-1% dimethyl-glyoxime 5-12% sodium thiosulphate 3-8% potassium fluoride, 5-10%...

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Bibliographic Details
Main Authors BAEUMER, WILHELM, SCHMITT, DIETER, STEIN, ALFRED
Format Patent
LanguageEnglish
Published 19.10.1978
Edition2
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Summary:1,271,338. Indicator for nickel ions. MERCK PATENT G.m.b.H. 30 Oct., 1970 [3 Sept., 1970], No. 51684/70. Heading B1X part A. An indicator for the detection of nickel ions comprises an absorbent carrier impregnated with 0.1-1% dimethyl-glyoxime 5-12% sodium thiosulphate 3-8% potassium fluoride, 5-10% of a buffer and 0-3% hydroxylammonium chloride. The buffer may be any weak acid or alkali metal salt thereof e.g. succinic, tartaric, citric, malic, malonic, maleic, phosphoric or boric and pH adjustment may be carried out with e.g. sodium hydroxide. The carrier may be impregnated in two stages with the dimethyl glyoxime being added in water or water/methanol as one stage. The carrier may be paper and may be stuck onto resin films or paper or metal strips. Interfering ions may be masked by the addition of suitable reagents when testing.
Bibliography:Application Number: DE19702043600