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The U.S. National Institute for Occupational Safety and Health considers 4-nitrochlorobenzene as a potential occupational carcinogen. [5] The Occupational Safety and Health Administration set a permissible exposure limit of 1 mg/m 3 The American Conference of Governmental Industrial Hygienists recommends an airborne exposure limit of 0.64 mg/m 3 over a time-weighted average of eight hours.
c 6 h 5 cl + hno 3 → o 2 nc 6 h 4 cl + h 2 o This reaction affords a mixture of isomers. Using an acid ratio of 30% nitric acid, 56% sulfuric acid and 14% water, the product mix is typically 34-36% 2-nitrochlorobenzene and 63-65% 4-nitrochlorobenzene , with only about 1% 3-nitrochlorobenzene .
This page contains tables of azeotrope data for various binary and ternary mixtures of solvents. The data include the composition of a mixture by weight (in binary azeotropes, when only one fraction is given, it is the fraction of the second component), the boiling point (b.p.) of a component, the boiling point of a mixture, and the specific gravity of the mixture.
Chlorobenzene can persist in soil for several months, in air for about 3.5 days, and in water for less than one day. Humans may be exposed to this agent via breathing contaminated air (primarily via occupational exposure), consuming contaminated food or water, or by coming into contact with contaminated soil (typically near hazardous waste sites).
1-chloro-3-methylbenzene 1-chloro-4-methylbenzene Molecular formula: C 7 H 7 Cl (C 6 H 4 ClCH 3) Molar mass: 126.586 g/mol Appearance colorless liquid CAS number [95-49-8] [108-41-8] [106-43-4] Properties Density and phase: 1.073 g/ml, liquid 1.072 g/ml, liquid 1.069 g/ml, liquid Solubility in water: practically insoluble Other solubilities ...
2,4-Dinitrochlorobenzene (DNCB) is an organic compound with the chemical formula (O 2 N) 2 C 6 H 3 Cl. It is a yellow solid that is soluble in organic solvents. It is an important intermediate for the industrial production of other compounds. [2] DNCB is produced commercially by the nitration of p-nitrochlorobenzene with a mixture of nitric and ...
People born in December can have one of two astrological signs: Sagittarius (Dec. 1 through 21) or Capricorn (Dec. 22 through 31). The narcissus and holly also represent those born in December.
It can also be prepared by chlorination of 1-chloro-4-nitrobenzene. [1] One of the chlorides is reactive toward nucleophiles. Potassium fluoride gives 2-chloro-1-fluoro-4-nitrobenzene, an intermediate in the production of herbicides. With ammonia, one obtains 2-chloro-4-nitroaniline, a precursor to diazo dyes. Reduction with iron powder gives 3 ...