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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Main Authors | , , |
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Format | Patent |
Language | English |
Published |
19.10.1978
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Edition | 2 |
Subjects | |
Online Access | Get full text |
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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. |
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Bibliography: | Application Number: DE19702043600 |