首页>
外国专利>
1,10-PHENANTROLINATES OF SODIUM OR POTASSIUM 4-NITROPHENYL-PYRIDINYL METHANIDES HAVING INDICATING PROPERTIES TO WATER OR PROTONIC ORGANIC SOLVENTS WITH INTERVAL OF TRANSITION FROM BLUE TO COLORLESS AT PK OF 29
1,10-PHENANTROLINATES OF SODIUM OR POTASSIUM 4-NITROPHENYL-PYRIDINYL METHANIDES HAVING INDICATING PROPERTIES TO WATER OR PROTONIC ORGANIC SOLVENTS WITH INTERVAL OF TRANSITION FROM BLUE TO COLORLESS AT PK OF 29
