Petroleum Benzene CAS#71-43-2
CAS Number: 71-43-2
Chemical Formula:C6H6
Synonyms:
(6)annulene;
1,3,5-Cyclohexatriene;
Annulene;
Benzeen;
Benzen;
Appearance: Colorless clear liquid
HS Code: 29022000
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Products Description of Petroleum Benzene CAS#71-43-2
Petroleum benzene, with the molecular formula C₆H₆, is a transparent, volatile aromatic liquid derived from crude oil processing via naphtha reforming and steam cracking. It has a unique sweet aromatic smell. It exhibits poor solubility in water, yet mixes readily with alcohols, ethers and other conventional organic solvents. As a widely used aromatic feedstock from the petrochemical industry, it boasts consistent quality and fewer impurities relative to coking benzene.
This substance is highly flammable and toxic. Adequate ventilation, open flame restriction and relevant personal protection should be implemented in all stages of storage, shipment and operation.
Parameters
| Melting point | 5.53 °C (41.95 °F; 278.68 K) |
| Boiling point | 80.1 °C (176.2 °F; 353.2 K) |
| Density | 0.8765(20) g/cm3 |
| vapor density | 2.77 (vs air) |
| vapor pressure | 166 mm Hg ( 37.7 °C) |
| refractive index | 1.5011 (20 °C); 1.4948 (30 °C) |
| Flash point | −11.63 °C (11.07 °F; 261.52 K) |
| storage temp. | room temp |
| solubility | Miscible with alcohol, chloroform, dichloromethane, diethyl ether, acetone and acetic acid. |
| pka | 43(at 25℃) |
| form | liquid |
| color | Colorless |
| Relative polarity | 0.111 |
| Odor | Paint-thinner-like odor detectable at 12 ppm |
| explosive limit | 1.4-8.0%(V) |
| Odor Threshold | 2.7ppm |
| Water Solubility | 0.18 g/100 mL |
| Thermal Conductivity | 0.1412 W/(m·K) at 25 ℃ |
| Specific Heat Capacity | Cp(liquid): 1.74 J/(g·K); Cp(gas): 1.05 J/(g·K), at 25℃ |
| ex/em | λex 255 nm; λem 303 nm in cyclohexane |
| λmax | λ: 280 nm Amax: 1.0 λ: 290 nm Amax: 0.15 λ: 300 nm Amax: 0.06 λ: 330 nm Amax: 0.02 λ: 350-400 nm Amax: 0.01 |
| Merck | 14,1066 |
| BRN | 969212 |
| Henry's Law Constant | 10.4 at 45.00 °C, 11.4 at 50.00 °C, 13.3 at 55.00 °C, 14.5 at 60.00 °C, 16.8 at 65.00 °C, 19.2 at 70.00 °C (static headspace-GC, Park et al., 2004) |
| Dielectric constant | 2.3(20℃) |
| Exposure limits | ACGIH TLV-TWA:0.02 ppm OSHA PEL-TWA:10 ppm (～32 mg/m3);PEL-Ceiling:25 ppm (～80 mg/m3);PEL-peak:50 ppm (～160 mg/m3)/10 min/8 h NIOSH REL-TWA:0.1 ppm;REL-STEL:1 ppm |
| Stability | Stable. Substances to be avoided include strong oxidizing agents, sulfuric acid, nitric acid, halogens. Highly flammable. |
| InChI | 1S/C6H6/c1-2-4-6-5-3-1/h1-6H |
| InChIKey | UHOVQNZJYSORNB-UHFFFAOYSA-N |
| SMILES | c1ccccc1 |
| EPA Primary Drinking Water Standard | MCL:0.005,MCLG:zero |
| LogP | 2.130 |
| Surface tension | 28.891mN/m at 293.15K |
| Toxicology and Carcinogenesis | Toxicology and Carcinogenesis Studies of Benzene (CASRN 71-43-2) in F344/N Rats and B6C3F1 Mice (Gavage Studies) |
| Substances Added to Food (formerly EAFUS) | BENZENE |
| REACH Annex XVII Substances List | Benzene (71-43-2) |
| FDA 21 CFR | 175.105 |
| CAS DataBase Reference | 71-43-2(CAS DataBase Reference) |
| EWG's Food Scores | 10 |
| NCI Dictionary of Cancer Terms | benzene |
| FDA UNII | J64922108F |
| Proposition 65 List | Benzene |
| NIST Chemistry Reference | Benzene(71-43-2) |
| IARC | 1 (Vol. 29, Sup 7. 100F, 120) 2018 |
| EPA Substance Registry System | Benzene (71-43-2) |
| Toxicological Profile|ATSDR | Benzene|Toxicological Profile|ATSDR |
| UNSPSC Code | 77101502 |
| NACRES | NA.24 |
Safety Information
Signal word Danger Hazard statements H302-H315-H319-H361-H372-H370-H340-H350-H336-H304-H401-H412-H225 Precautionary statements P501-P273-P270-P202-P240-P260-P210-P233-P201-P243-P241-P242-P271-P264-P280-P370+P378-P331-P337+P313-P305+P351+P338-P308+P311-P362+P364-P303+P361+P353-P332+P313-P301+P310-P304+P340+P312-P403+P233-P403+P235-P405 target organs Blood Hazard Codes F,T Risk Statements 45-46-11-36/38-48/23/24/25-65-39/23/24/25-23/24/25 Safety Statements 53-45-36/37-16-7 RIDADR UN 1114 OEB E OEL TWA: 0.1 ppm, STEL: 1 ppm WGK Germany 3 RTECS CY1400000 F 3-10 Autoignition Temperature 560 °C TSCA TSCA listed HS Code 2902 20 00 HazardClass 3 PackingGroup II Storage Class 3 - Flammable liquids Hazard Classifications Aquatic Chronic 3
Asp. Tox. 1
Carc. 1A
Eye Irrit. 2
Flam. Liq. 2
Muta. 1B
Skin Irrit. 2
STOT RE 1Hazardous Substances Data 71-43-2(Hazardous Substances Data) Toxicity LD50 orally in young adult rats: 3.8 ml/kg (Kimura) IDLA 500 ppm
Product Application of Petroleum Benzene CAS#71-43-2
Petroleum benzene is a foundational raw material for the petrochemical aromatic industry chain. It is extensively processed into ethylbenzene and styrene, which go on to make polystyrene, SBR rubber and various composite polymer materials. It can also be converted into cumene for the phenol-acetone route, cyclohexane as a precursor for nylon-6, plus nitrobenzene and aniline that feed polyurethane and dyestuff intermediate production.
Besides, it is applied to produce alkylbenzene, a key component for surfactants and detergents. Under approved restricted conditions, it may also work as an industrial solvent to dissolve greases and resins.
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