Chloronitrobenzenes
Chloronitrobenzenes | |||||||||
Surname | 2-chloronitrobenzene | 3-chloronitrobenzene | 4-chloronitrobenzene | ||||||
other names | o -chloronitrobenzene | m -chloronitrobenzene | p -chloronitrobenzene | ||||||
Structural formula | |||||||||
CAS number | 88-73-3 | 121-73-3 | 100-00-5 | ||||||
PubChem | 6945 | 8489 | 7474 | ||||||
Molecular formula | C 6 H 4 ClNO 2 | ||||||||
Molar mass | 157.56 g mol −1 | ||||||||
Physical state | firmly | ||||||||
Melting point | 31-33 ° C | 43-47 ° C | 80-83 ° C | ||||||
boiling point | 246 ° C | 236 ° C | 242 ° C | ||||||
density | 1.348 g cm −3 (25 ° C) | 1.534 g cm −3 (25 ° C) | 1.298 g cm −3 (25 ° C) | ||||||
Vapor pressure | 0.04 mm Hg (25 ° C) | 0.09 mm Hg (25 ° C) | |||||||
solubility | 0.45 g / l (24 ° C) | ||||||||
Flash point | 127 ° C | ||||||||
GHS labeling |
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H and P phrases | 301-311 | 302-400 |
301-311-331 341-351-373-411 |
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no EUH phrases | no EUH phrases | no EUH phrases | |||||||
280-301 + 310-312 | 273 | 261-273-280-301 + 310-311 | |||||||
LD 50 | 420 mg kg −1 oral, rat |
In chemistry , the chloronitrobenzenes form a group of substances that are derived from both nitrobenzene and chlorobenzene . The structure consists of a benzene ring with attached nitro group (–NO 2 ) and chlorine (–Cl) as substituents . Their different arrangement results in three constitutional isomers with the empirical formula C 6 H 4 ClNO 2 .
Extraction and presentation
Chlornitrobenzolisomere can nitration of chlorobenzene in the presence of sulfuric acid derived.
properties
The p -chloronitrobenzene, which has the highest symmetry, has the highest melting point.
Individual evidence
- ↑ a b c d e data sheet 1-Chloro-2-nitrobenzene from Sigma-Aldrich , accessed on November 5, 2016 ( PDF ).
- ↑ a b c d data sheet 1-Chloro-3-nitrobenzene from Sigma-Aldrich , accessed on November 5, 2016 ( PDF ).
- ↑ a b c d e data sheet 1-Chloro-4-nitrobenzene from Sigma-Aldrich , accessed on November 5, 2016 ( PDF ).
- ↑ a b c Entry for CAS no. 100-00-5 in the GESTIS substance database of the IFA , accessed on January 6, 2012(JavaScript required) .