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+.

A new technology process for synthesis of lauroyl peroxide with lauroyl chloride and sodium peroxide was developed;The effects of different factors on the yield, such as reaction temperature, concentration of reaction, pH value of reactant, method of the reactant dropped into the reactor, choice of surfactant, were discussed, the optimum process conditions were obtained.

The sample was molten and decomposed with sodium peroxide,leached and acidified with hot water and constant-volumed.