Search results
Results from the WOW.Com Content Network
Dibenzothiophene (DBT, diphenylene sulfide) is the organosulfur compound consisting of two benzene rings fused to a central thiophene ring. It has the chemical formula C 12 H 8 S. It is a colourless solid that is chemically somewhat similar to anthracene .
Using a more sensitive cutoff of 20 ng/mL (less common but still used by some labs), the most likely maximum times are 7 days and 21 days, respectively. In extraordinary circumstances of extended marijuana use, detection times of more than 30 days are possible in some individuals at the 20 ng/mL cutoff. [7]
Dibenzofuran is a relatively non-toxic compound as evidenced by rats being unaffected after a 200-day diet consisting of 0.025 – 0.4% of DBF. [1] The polychlorinated dibenzofurans are however among the potentially toxic dioxins and dioxin-like compounds.
Recreational pot sales are nearing reality in Ohio. The state Division of Cannabis Control began accepting applications Friday for new dual licenses that will allow existing medical marijuana ...
For alcohol, the cutoff is uniform: A blood alcohol concentration above 0.08 percent. But there is no standard cutoff for THC, the psychoactive compound in marijuana.
By doing so, many substances that are liquid or have a low melting point are converted to easily crystallized derivates with sharp melting points. For instance, alcohols can be identified by the melting point of their esters with 3,5-dinitrobenzoic acid. This method is also applicable to a large number of amines.
Benzyl mercaptan is used for S-alkylation to give benzylthioethers. [3]It has been used as a source of the thiol functional group in organic synthesis.Debenzylation can be effected by dissolving metal reduction: [4]
It increases the molecular weight of the polymer by linking-together alcohol and carboxylic acid groups formed by hydrolysis of the PET. This improves the rheological properties and overall quality of the recycled plastic.