131138-21-1 Usage
General Description
1,2,4-trichloro-5-(2,5-dichlorophenoxy)benzene is a chemical compound with the molecular formula C12H5Cl7. It is a chlorinated derivative of benzene and is classified as a polychlorinated biphenyl (PCB), which is a group of synthetic organic chemicals that were commonly used in various industrial applications. PCBs have been banned in many countries due to their toxic effects on the environment and human health. 1,2,4-trichloro-5-(2,5-dichlorophenoxy)benzene is known to be toxic to aquatic organisms and can bioaccumulate in the food chain. It is also classified as a potential human carcinogen and has been linked to adverse effects on the immune, reproductive, and nervous systems. Overall, 1,2,4-trichloro-5-(2,5-dichlorophenoxy)benzene is a hazardous chemical that poses risks to both the environment and human health.
Check Digit Verification of cas no
The CAS Registry Mumber 131138-21-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,1,3 and 8 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 131138-21:
(8*1)+(7*3)+(6*1)+(5*1)+(4*3)+(3*8)+(2*2)+(1*1)=81
81 % 10 = 1
So 131138-21-1 is a valid CAS Registry Number.
131138-21-1Relevant articles and documents
Synthesis, Structure Verification, and Chromatographic Relative Retention Times for Polychlorinated Diphenyl Ethers
Nevalainen, Tapio,Koistinen, Jaana,Nurmela, Pirjo
, p. 1341 - 1347 (2007/10/03)
Fifty-four polychlorinated diphenyl ether (PCDEs) congeners were synthesized, and their structures were confirmed by mass spectrometry and proton magnetic resonance spectroscopy. The gas chromatographic relative retention times (RRT) for the PCDEs were determined relative to a reference standard, -tetrachlorobiphenyl (PCB 77) on the fused silica capillary columns of SE-54 and OV-1701. The retention times for PCDEs increased with the increasing number of vicinal chlorines within a series of isomers. The chlorine substitution patterns of PCDEs were used to develop a method for predicting RRTs for congeners that were not synthesized.
