Q：Is o-xylene harmful to humans?
A：Yes, o-xylene is harmful to humans. And the legal airborne permissible exposure limit (PEL) is 100 ppm averaged over an 8-hour workshift.
Jul 24，2024 Organic reagents
Q：What is ammonium hydroxide used for?
A：Ammonium hydroxide is usually found in concentrations of up to 30% and is used in household cleaners, photography, fertilizers, textiles, rubber, and pharmaceuticals, as well as as a refrigerant.
Jul 24，2024 Inorganic chemistry
Q：How can the organic pollutant PTSA be removed from wastewater?
A：p-Toluenesulfonic acid (PTSA), a kind of aromatic sulfonate that belongs to the refractory organic pollutant, is one of the most widely used chemicals in the pharmaceutical, dye, petrochemical and pla
Jul 24，2024 Organic Chemistry
Synthesis of Nucleic Acid
Nucleic Acid is a biomolecule whose primary function is to store and express genomic information.
Jul 24，2024 Amino Acids and Proteins
Triglycerides Synthesis and Treatments for high triglycerides
Triglycerides are tri-esters consisting of a glycerol bound to three fatty acid molecules. Triglycerides are the main constituents of vegetable fat and body fat in humans and other animals.
Jul 23，2024 Biochemical Engineering
Ammonia synthesis and Ammonia uses
Ammonia gas is easily compressed and forms a clear, colorless liquid under pressure. It is usually shipped as a compressed liquid in steel cylinders.
Jul 23，2024 Inorganic chemistry
Synthesis of Vitamin D from β-Sitosterol
The vitamin D family is known as vitamins D2, D3, D4, D5, D6, D7 and contributes to important biological functions after converting to active forms. This article will introduce a method to synthesize
Jul 23，2024 Vitamins and Minerals medicines
Dopamine synthesis
Dopamine is synthesized from phenylalanine or tyrosine via sequential reactions catalyzed mainly by PH, TH, and DOPA decarboxylase.
Jul 23，2024 Biochemical Engineering
The toxicity of Bifenthrin
Bifenthrin is neurotoxic and targets voltage-gated sodium channels in neurons. Its low toxicity in mammals has resulted in widespread use both in agricultural and urban applications.
Jul 23，2024 Organic reagents
Ethylene: uses and Biosynthesis
The ethylene biosynthesis pathway is relatively simple, occurring via only two committed enzymatic reactions.
Jul 23，2024 Organic Chemistry