- The problems on acidity control of complexometric titration were further studied,and the new method of calculation on the dimension of suitable acidity about the titration in metal ion were proposed.
- According to the procedure, 1,2-dichloroethane is used as solvent, Sodium carbonate is used as catalyst, 2-Indanone is prepared, adding dropwise of performic acid control the reaction.
- The invention relates to a nucleic acid controlling the expression of a useful polypeptide, particularly in the posterior silk glands of Bombyx mori .
- He gave me a taste of his acid wit.
- Acid irritates the stomach lining.
- Acid had pitted the surface of the silver.