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Organic reagents

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 toxicity of Triethylene glycol

Triethylene glycol (TEG) has been used for natural gas dehydration, as a humectant, solvent, and chemical intermediate in synthesizing resins, plasticizers, lubricants, and polyurethanes.

May 14,2024  Organic reagents

Is 1,4-benzoquinone a toxicity compound?

1,4-benzoquinone is genotoxic and mutagenic.

May 11,2024  Organic reagents

The Synthesis method and Toxicity of 18-Crown-6

The compound known as 18-crown-6 is one of the simplest and most valuable of the macrocyclic polyethers.

May 10,2024  Organic reagents

Does melamine migrate from melamine-formaldehyde tableware into foods?

Melamine is an inexpensive synthetic compound that becomes melamine resin when combined with formaldehyde. This melamine formaldehyde resin is used to make melamine dishware and hard plastic tableware

May 9,2024  Organic reagents

The uses of N, N-dimethylformamide dimethyl acetal in organic

N, N-Dimethylformamide dimethyl acetal, also known as DMF-DMA or 1,1-dimethoxytrimethylamine, belongs to the class of organic compounds known as carboxylic acid amide acetals.

May 9,2024  Organic reagents

An investigation into the toxicity of mesitylene

The effects of mesitylene on health, mainly developmental or neurological toxicity, were evaluated only in vitro and epidemiological studies

May 8,2024  Organic reagents

The structure of Formamide

Formamide, the simplest carboxylic acid amide, is a viscous, odorless, colorless liquid with a melting point of 2 oC and a boiling point of 210 oC.

May 7,2024  Organic reagents

Is 2-hydroxyethyl methacrylate safe?

HEMA (2-hydroxyethyl methacrylate), commonly used in dentistry, was reported to induce genotoxic effects.

May 7,2024  Organic reagents

Q:Is phthalic anhydride hazardous?

A:Phthalic anhydride is an organic compound with C6H4(CO)2O formula. It is the anhydride of phthalic acid. Phthalic anhydride is a principal commercial form of phthalic acid.

May 6,2024  Organic reagents

The structure of 2,6-Lutidine

2,6-Lutidine (2,6-dimethylpyridine, C7H9N),(I), is present in many complexes coordinated to a metal center.

May 6,2024  Organic reagents
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