109-40-0 Usage
General Description
Thiourea, N,N'-dioctyl- is a chemical compound that is commonly used as a metal extractant and flotation reagent in the mining and metallurgy industries. It is a derivative of thiourea, which is a sulfur-containing organic compound. N,N'-dioctyl-thiourea is known for its ability to selectively extract and separate precious metals such as gold, silver, and platinum from ores and mineral deposits. It is also used as a collector in the flotation process to separate valuable minerals from gangue materials. Additionally, N,N'-dioctyl-thiourea has applications in the textile and rubber industries as a curing agent and accelerator. However, it is important to handle and dispose of this chemical with care due to its potential environmental and health hazards.
Check Digit Verification of cas no
The CAS Registry Mumber 109-40-0 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,0 and 9 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 109-40:
(5*1)+(4*0)+(3*9)+(2*4)+(1*0)=40
40 % 10 = 0
So 109-40-0 is a valid CAS Registry Number.
109-40-0Relevant articles and documents
Cerium ammonium nitrate-catalyzed aerobic oxidative coupling of dithiocarbamates: Facile synthesis of thioureas and bis(aminothiocarbonyl)disulfides
Li, Tian-Tian,Song, Xiang-Hai,Wang, Mei-Shuang,Ma, Ning
, p. 40054 - 40060 (2014/12/10)
Diverse disubstituted and trisubstituted thioureas were synthesized by the condensation of dithiocarbamate TEA (or DABCO) salts and amines using cerium ammonium nitrate (CAN) as a catalyst in high yields at room temperature. It is a one-pot method and it is unnecessary to isolate isothiocyanates. This reaction probably took place through nucleophilic addition of amines to isothiocyanates, which were generated by oxidative coupling of dithiocarbamates and the following decomposition of bis(aminothiocarbonyl)disulfides. When secondary amines and CS2served as the reactants, bis(aminothiocarbonyl)disulfides were obtained via tandem nucleophilic addition/oxidative coupling reactions in moderate to excellent yields. In all the coupling reactions, the oxidant was air and CAN possibly acted as an SET catalyst.
