| Identification | More | 【Name】
Benzene | 【CAS】
71-43-2 | 【EINECS(EC#)】
200-753-7 | 【Molecular Formula】
C6H6 | 【MDL Number】
MFCD00003009 | 【Molecular Weight】
78.11 | 【MOL File】
71-43-2.mol |
| Chemical Properties | Back Directory | 【Appearance】
colourless liquid | 【mp 】
5.5 °C(lit.)
| 【bp 】
80 °C(lit.)
| 【density 】
0.874 g/mL at 25 °C(lit.)
| 【vapor density 】
2.77 (vs air)
| 【vapor pressure 】
166 mm Hg ( 37.7 °C)
| 【refractive index 】
n20/D 1.501(lit.)
| 【Fp 】
12 °F
| 【storage temp. 】
0-6°C
| 【Stability:】
Stable. Substances to be avoided include strong oxidizing agents, sulfuric acid, nitric acid, halogens. Highly flammable. | 【Water Solubility 】
0.18 g/100 mL | 【Merck 】
14,1066 | 【BRN 】
969212 | 【CAS DataBase Reference】
71-43-2(CAS DataBase Reference) | 【NIST Chemistry Reference】
Benzene(71-43-2) | 【EPA Substance Registry System】
71-43-2(EPA Substance) |
| Safety Data | Back Directory | 【Hazard Codes 】
F,T | 【Risk Statements 】
R45:May cause cancer.
R11:Highly Flammable.
R36/38:Irritating to eyes and skin .
R48/23/24/25:Toxic: danger of serious damage to health by prolonged exposure through inhalation, in contact with skin and if swallowed .
R65:Harmful: May cause lung damage if swallowed.
R39/23/24/25:Toxic: danger of very serious irreversible effects through inhalation, in contact with skin and if swallowed .
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed . | 【Safety Statements 】
S53:Avoid exposure - obtain special instruction before use .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S36/37:Wear suitable protective clothing and gloves . | 【RIDADR 】
UN 1114 3/PG 2
| 【WGK Germany 】
3
| 【RTECS 】
CY1400000
| 【F 】
3-10 | 【HazardClass 】
3 | 【PackingGroup 】
II | 【Hazardous Substances Data】
71-43-2(Hazardous Substances Data) |
| Hazard Information | Back Directory | 【General Description】
A clear colorless liquid with a petroleum-like odor. Flash point less than 0°F. Less dense than water and slightly soluble in water. Hence floats on water. Vapors are heavier than air. | 【Reactivity Profile】
BENZENE(71-43-2) reacts vigorously with allyl chloride or other alkyl halides even at minus 70°C in the presence of ethyl aluminum dichloride or ethyl aluminum sesquichloride. Explosions have been reported [NFPA 491M 1991]. Ignites in contact with powdered chromic anhydride [Mellor 11:235 1946-47]. Incompatible with oxidizing agents such as nitric acid. Mixtures with bromine trifluoride, bromine pentafluoride, iodine pentafluoride, iodine heptafluoride and other interhalogens can ignite upon heating [Bretherick 5th ed. 1995]. BENZENE(71-43-2) and cyanogen halides yield HCl as a byproduct (Hagedorn, F. H. Gelbke, and Federal Republic of Germany. 2002. Nitriles. In Ullman Encyclopedia of Industrial Chemistry. Wiley-VCH Verlag GmbH & Co. KGaA.). The reaction of BENZENE(71-43-2) and trichloroacetonitrile evolves toxic chloroform and HCl gasses. (Hagedorn, F., H.-P. Gelbke, and Federal Republic of Germany. 2002. Nitriles. In Ullman Encyclopedia of Industrial Chemistry. Wiley-VCH Verlag GmbH & Co. KGaA.). | 【Air & Water Reactions】
Highly flammable. Slightly soluble in water. | 【Health Hazard】
Dizziness, excitation, pallor, followed by flushing, weakness, headache, breathlessness, chest constriction, nausea, and vomiting. Coma and possible death. | 【Fire Hazard】
Behavior in Fire: Vapor is heavier than air and may travel considerable distance to a source of ignition and flash back. |
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