2678-21-9 Usage
General Description
1,2,5-Trichloro-4,6-dinitrobenzene, also known as tetrachloronitrobenzene, is an organic compound primarily used as a chemical intermediate in the production of dyes and other organic chemicals. It is a yellow solid at room temperature and is insoluble in water. It is toxic and potentially harmful if inhaled, ingested, or in contact with skin, causing irritation and damage to the respiratory, gastrointestinal, and nervous systems. Due to its toxic nature, it is not commonly used in consumer products but is utilized in industrial settings for its chemical reactions and properties. It is classified as a hazardous chemical and must be handled and stored with caution to prevent harm to human health and the environment.
Check Digit Verification of cas no
The CAS Registry Mumber 2678-21-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,6,7 and 8 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2678-21:
(6*2)+(5*6)+(4*7)+(3*8)+(2*2)+(1*1)=99
99 % 10 = 9
So 2678-21-9 is a valid CAS Registry Number.
InChI:InChI=1/C6HCl3N2O4/c7-2-1-3(10(12)13)5(9)6(4(2)8)11(14)15/h1H
2678-21-9Relevant articles and documents
-
Gunther,Blinn
, p. 1215 (1947)
-
Electrophilic Aromatic Substitution. Part 35. Chlorination of 1,3-Dinitrobenzene, 1-Chloro-2,4-dinitrobenzene, and 2,4-Dinitrotoluene with Nitric Acid and Hydrogen Chloride or Chlorine in Sulphuric Acid or Oleum
Melhuish, Martin W.,Moodie, Roy B.
, p. 667 - 674 (2007/10/02)
Solutions of sulphuric acid or oleum containing HCl or Cl2 and nitric acid have been found both to chlorinate and nitrate deactivated aromatic compounds.The kinetics and products of the chlorination of 1,3-dinitrobenzene and 1-chloro-2,4-dinitrobenzene in sulphuric acid or oleum containing HCl and nitric acid at 130 deg C, and the kinetics and products of the chlorination of 2,4-dinitrotoluene at 90 deg C in sulphuric acid or oleum containing Cl2 and nitric acid, are reported. 1,3-Dinitrobenzene and 1-chloro-2,4-dinitrobenzene were predominantly chlorinated. 2,4-Dinitrotoluene gave approximately equal amounts of 6-chloro-2,4-dinitrotoluene and 2,4,6-trinitrotoluene.The results show that under these conditions, chlorination and nitration are competing electrophilic reactions, and that chlorination is less selective than nitration.Possible mechanisms for chlorination are discussed.
