From early AD to mid-19 century, people mainly use the natural organic substance (such as animal and plant extracts) for qualitative analysis or quantitative analysis. From the second half of the 19th century to the 1920s, it had begun to appear of artificially synthetic organic reagent such as using potassium acetate xanthan for test of nickel, copper, and molybdenum; using morin for test of aluminum; using diazo coupling reaction for the detection of Nitrite; using α-β-nitroso naphthol for detection of cobalt; using dimethyglyoxime for nickel test. After the proposal of the special-effects group in the 1930s and the proposal of theoretical analysis of functional groups theory in 1950s, people had carried out large-scale screen of organic reagents in search of special-effects analysis groups for different ions and had successfully synthesized a lot of agents of practical value (such as copper reagents, new copper agent, cadmium reagents, beryllium reagent, thorium reagents, etc.). Before the 1950s, the complex compound, in analytic chemistry, is mainly used in the aspects of the precipitation reaction of a binary chelate for the qualitative detection, precipitate isolation and gravimetric separation and other aspects. In the early 1950s and 1960, it is mainly in the form of complexometric titration. From the beginning of the late 1960s, the main focus has been moved to the photometric analysis. Meanwhile, it has been also developed of chelate organic solvent extraction.
The wide range of applications: 1,1,1,3,3,3-Hexafluoro-2-propanol
Hexafluoro-2-propanol (HFIP; 1,1,1,3,3,3-Hexafluoro-2-propanol) is a low-boiling solvent used in a variety of chemical applications.
Apr 26,2024 Organic reagentsN-Hydroxysuccinimide and N-hydroxysuccinimide ester
N-Hydroxysuccinimide, commonly known as NHS, is an intermediate used in peptide chemistry to prepare various activated esters of acylamino acids.
Apr 26,2024 Organic reagentsThe toxicity of 4-Methylbenzophenone (HRcure-MBZ)
In the area of printing inks, HRcure-MBZ and benzophenone are used as photoinitiators for inks and lacquers that are cured with ultraviolet light.
Apr 26,2024 Organic reagentsThe brief introduction of N,N,N',N'-Tetramethylethylenediamine
TMEDA is widely employed as a ligand for metal ions. It forms stable complexes with metal halides, e.g., zinc chloride and copper(I) iodide, making complexes soluble in organic solvents.
Apr 25,2024 Organic reagentsThe wide range of applications: Dimethyl carbonate
Dimethyl carbonate is a versatile compound that represents an attractive, eco-friendly alternative to both methyl halides (or dimethyl sulfate) and phosgene for methylation and carbonylation processes
Apr 25,2024 Organic reagentsTert-Butyldimethylsilyl chloride: Uses and hazard
Tert-butyldimethylsilyl chloride (TBDMSCl) is a silyl chloride consisting of a central silicon atom covalently bound to one chloro, one tert-butyl, and two methyl groups.
Apr 24,2024 Organic reagentsWhat kind of substance is triethylenediamine?
Triethylenediamine (TEDA; IUPAC name: 1,4-diazabicyclo(2.2.2)octane) is a pure white powdered crystal under standard conditions.
Apr 24,2024 Organic reagentsThe uses of Acetyl chloride
Acetyl chloride is a powerful acetylating agent. It is used in the manufacture of aspirin, acetaminophen, and acetanilide. Liquid crystal compositions for optical display and memory devices frequently
Apr 24,2024 Organic reagentsN,N-Dimethylacetamide: Preparation, Introduction, and uses
N, N-Dimethylacetamide is a colorless, water-miscible solvent used to synthesize vinyl resins, styrenes, and linear polyesters.
Apr 19,2024 Organic reagentsQ:Is aniline toxic to humans?
A:Yes, Aniline is a highly toxic systemic poison that is absorbed well by inhalation and through the skin.
Apr 19,2024 Organic reagents