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  • carbon atoms
  • 260-295 B 2 Claims E wherein each R is hydrogen, an alkyl radical having 1 ABS CT THE DISCLOSURE 10 to 4 carbon atoms, an alkoxy radical having 1 to 4 carbon A novel chromogenrc compound of normally colorless atoms or h l i L form dlsclosed, havlllg the Structural formula! (google.com)
  • The ion selective compound has the formula: ##STR1## wherein A is an alkyl group having between 8 and 16 carbon atoms, B is an alkyl group having between 1 and 4 carbon atoms, and each C and D is, independently, a hydrogen atom or an alkyl group having between 1 and 16 carbon atoms, provided that both C and D are not alkyl groups having greater than 4 carbon atoms. (google.com)
  • wherein
  • 2. The method of claim 1 wherein said water soluble heat-stable polymeric material is polyethylene glycol. (google.com)
  • An electrode for determining the lithium content of a liquid sample to be tested, has a membrane containing a lithium ion selective compound and a plasticizer, the improvement wherein the plasticizer is a liquid, lipophilic dialkyl phthalate compound or a liquid phenyl phenyl ether compound that has a strong electron withdrawing group at an ortho position on one of the phenyl rings. (google.com)
  • electron
  • The improvement is using as the plasticizer either a liquid, dialkyl phthalate compound, or a liquid phenyl phenyl ether compound that has at the ortho position (with respect to the ether linkage) of one of its phenyl rings a strong electron-withdrawing group. (google.com)
  • agent
  • Preparation of these solutions involve the novel process of pre-treating at least one of the electrochemichromic compounds with a redox agent prior to placing it in contact with the other electrochemichromic compound. (google.es)
  • solid
  • The signal generating compound is produced without separation of the catalyst labeled mip bound to the solid surface from the catalyst labeled mip free in solution. (patents.com)
  • In a preferred embodiment, an enzyme is bonded to a mip which acts in conjunction with a solute to produce a signal generating product which binds preferentially to the solid surface when the enzyme is bound to the surface, resulting in a signal which is readily differentiated from signal generating compound produced by the catalyst and solute in the bulk solution. (patents.com)