Effect of solid-state pretreatment with sodium hydroxide on the lignin structure of rice straw;

Content measurement of sodium hydroxide and sodium carbonate in ion-exchange membrane caustic soda;

Detection of mercury in sodium hydroxide as food additives;

Detection on metal ion in caustic soda with inductively coupled plasma spectrometry method;

The new synthetic process of sodium diacetate using acetic acid and caustic soda(or soda ash ) as raw materials, and adopting a new process of one-step liquid-phase method is introduced.

Determination of zinc by EDTA titrimetry after precipitation with sodium hydrate;

Preparing sodium diacetate by one step reaction based on acetic anhydride and sodium hydrate (with water as solvent) was studied.

Research on solution chemistry of Zn(NO_3)_2-NaOH-H_2O system;

Based on the reaction of genistein and NaOH,which has the maximum absorption in 271 nm wavelength,ultra-violet spectrophotometry method was used for determination of isoflavones in Glycine max(L.

Sodium potassium tartrate - NaOH solution was used as masking agent to reject the disturbance of Ca2+ and Mg2+.

Preparation of Na_2S_2O_5 from dilute NaOH;