Name | Benzene |
Synonyms | Phene Benzol Benzene Benzolene pyrobenzol carbon oil BENZENE 300 [6]Annulene (6)annulene Pure benzol Coal naphtha motor benzol BENZENE 5000 Phenyl hydride cyclohexatriene mineral naphtha Benzol,HPLC Grade AKOS BBS-00004227 nitration benzene Benzene, OMniSolv(R) Benzene, PestiSolv(R) bicarburet of hydrogen Benzene, for spectroscopy |
CAS | 71-43-2 174973-66-1 54682-86-9 |
EINECS | 200-753-7 |
InChI | InChI=1/C6H6/c1-2-4-6-5-3-1/h1-6H |
InChIKey | UHOVQNZJYSORNB-UHFFFAOYSA-N |
Molecular Formula | C6H6 |
Molar Mass | 78.11 |
Density | 0.874 g/mL at 25 °C (lit.) |
Melting Point | 5.5 °C (lit.) |
Boling Point | 80 °C (lit.) |
Flash Point | 12°F |
Water Solubility | 0.18 g/100 mL |
Solubility | Miscible with alcohol, chloroform, dichloromethane, diethyl ether, acetone and acetic acid. |
Vapor Presure | 166 mm Hg ( 37.7 °C) |
Vapor Density | 2.77 (vs air) |
Appearance | Liquid |
Color | APHA: ≤10 |
Odor | Paint-thinner-like odor detectable at 12 ppm |
Exposure Limit | TLV-TWA 10 ppm (~32 mg/m3) (ACGIHand OSHA); ceiling 25 ppm (~80 mg/m3)(OSHA and MSHA); peak 50 ppm (~160mg/m3)/10 min/8 h (OSHA); carcinogenicity:Suspected Human Carcinogen (ACGIH),Human Sufficient Ev |
Maximum wavelength(λmax) | ['λ: 280 nm Amax: 1.0', , 'λ: 290 nm Amax: 0.15', , 'λ: 300 nm Amax: 0.06', , 'λ: 330 |
Merck | 14,1066 |
BRN | 969212 |
pKa | 43(at 25℃) |
Storage Condition | room temp |
Stability | Stable. Substances to be avoided include strong oxidizing agents, sulfuric acid, nitric acid, halogens. Highly flammable. |
Explosive Limit | 1.4-8.0%(V) |
Refractive Index | n20/D 1.501(lit.) |
Physical and Chemical Properties | Molecular Weight: 78.11 |
Use | Basic chemical raw materials, used as solvents and synthetic benzene derivatives, spices, dyes, plastics, pharmaceuticals, explosives, rubber, etc. |
Risk Codes | R45 - May cause cancer R46 - May cause heritable genetic damage R11 - Highly Flammable R36/38 - Irritating to eyes and skin. R48/23/24/25 - R65 - Harmful: May cause lung damage if swallowed R39/23/24/25 - R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. |
Safety Description | S53 - Avoid exposure - obtain special instructions before use. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37 - Wear suitable protective clothing and gloves. S16 - Keep away from sources of ignition. S7 - Keep container tightly closed. |
UN IDs | UN 1114 3/PG 2 |
WGK Germany | 3 |
RTECS | CY1400000 |
FLUKA BRAND F CODES | 3-10 |
TSCA | Yes |
HS Code | 2902 20 00 |
Hazard Class | 3 |
Packing Group | II |
Toxicity | LD50 orally in young adult rats: 3.8 ml/kg (Kimura) |
Raw Materials | Nitrogen Naphtha (petroleum), light alkylate |
Downstream Products | tert-Butylbenzene Styrene Cyclohexane Ethylbenzene Biphenyl 2-Picoline 3-Picoline Pyridine 2-Bromopyridine 2,4,6-Collidine |
It is a colorless transparent volatile liquid at normal temperature and pressure. Volatile, with ethanol, ether, acetone, chloroform, acetic acid, carbon disulfide, carbon tetrachloride and oil and other organic solvents miscible. Soluble in water: 23.5 ℃, 0.188% cw/w). Benzene is a non-decomposable compound. Its vapor can form an explosive mixture with air. It is very easy to cause combustion and explosion in the face of high heat or open fire. It is easy to generate and accumulate static electricity. The reaction was intense in contact with the oxidant.
industrial benzene may be continuously washed with concentrated sulfuric acid to remove the impurity thiophene content, then washed with water and 5% sodium hydroxide solution, dried with anhydrous calcium chloride, and the supernatant may be distilled.
A standard sample for measuring the refractive index. It can be used as a solvent and cleaning agent for precision optical instruments, electronic industry, etc., organic synthesis, etc.
adult rat oral LDso:3.8/kg. For carcinogens. High concentration of benzene on the central nervous system has anesthetic effect, causing acute poisoning I long-term exposure to benzene on the hematopoietic system damage, causing chronic poisoning. Keep away from fire and heat source. Storage temperature should not exceed 30 ℃. Keep the container sealed. Should be stored separately from the oxidant, edible chemicals, avoid mixed storage.