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100-00-5

Name 4-Chloronitrobenzene
CAS 100-00-5
EINECS(EC#) 202-809-6
Molecular Formula C6H4ClNO2
MDL Number MFCD00007285
Molecular Weight 157.55
MOL File 100-00-5.mol

Chemical Properties

Appearance p-Nitrochlorobenzene is a yellow crystalline solid with a sweet odor.
Melting point  80-83 °C(lit.)
Boiling point  242 °C(lit.)
density  1.298 g/mL at 25 °C(lit.)
vapor density  5.4 (vs air)
vapor pressure  0.09 mm Hg ( 25 °C)
refractive index  1.5376 (estimate)
Fp  >230 °F
solubility  Soluble in acetone and alcohol (Weast, 1986)
form  Crystals or Flakes
color  Yellow
Stability: Stable. Combustible. Incompatible with strong oxidizing agents, hydroxides. Reacts violently with sodium methoxide in methanol.
Water Solubility  Insoluble
Merck  14,2151
BRN  508691
Henry's Law Constant 4.90 x 10-6 atm?m3/mol at 25 °C (thermodynamic method-GC/UV spectrophotometry, Altschuh et al., 1999)
Exposure limits Potential occupational carcinogen. NIOSH REL: IDLH 100; OSHA PEL: TWA 1.
InChIKey CZGCEKJOLUNIFY-UHFFFAOYSA-N
CAS DataBase Reference 100-00-5(CAS DataBase Reference)
IARC 2B (Vol. 65, 123) 2020
NIST Chemistry Reference Benzene, 1-chloro-4-nitro-(100-00-5)
EPA Substance Registry System 100-00-5(EPA Substance)

Safety Data

Hazard Codes  T,N
Risk Statements 
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed .
R40:Limited evidence of a carcinogenic effect.
R48/20/21/22:Harmful: danger of serious damage to health by prolonged exposure through inhalation, and in contact with skin and if swallowed .
R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R68:Possible risk of irreversible effects.
Safety Statements 
S28:After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) .
S36/37:Wear suitable protective clothing and gloves .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
RIDADR  UN 1578 6.1/PG 2
WGK Germany  2
RTECS  CZ1050000
Autoignition Temperature 500 °F
Hazard Note  Very Toxic
TSCA  Yes
HazardClass  6.1
PackingGroup  II
HS Code  29049085
Safety Profile
Confirmed carcinogen with experimental carcinogenic data. A poison by ingestion. Experimental reproductive effects. Mutation data reported. Flammable liquid when exposed to heat, sparks, or flame. May explode on heating. Potentially violent reaction with sodium methoxide. When heated to decomDosition it emits very toxic fumes of NOx and Cl-. See also other chloronitrobenzene entries and NITRO COMPOUNDS OF AROMATIC HYDROCARBONS.
Hazardous Substances Data 100-00-5(Hazardous Substances Data)
Toxicity
LD50 (skin) for rats 16 gm/kg (quoted, RTECS, 1985).
IDLA 100 mg/m3

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