140710-60-7 Usage
Type of compound
Polycyclic aromatic hydrocarbon (PAH)
Occurrence
Found in coal tar and tobacco smoke
Classification
Known carcinogen
Health risk
Linked to an increased risk of cancer, particularly lung cancer
Exposure routes
Inhalation of tobacco smoke or occupational exposure to coal tar products
Molecular weight
Approximately 254.32 g/mol
Physical state
Solid at room temperature
Appearance
Colorless to pale yellow solid
Solubility
Slightly soluble in water, soluble in organic solvents like acetone, benzene, and ethanol
Melting point
Approximately 161-163°C (321.8-324.4°F)
Boiling point
Not readily available, but expected to be high due to its molecular structure
Vapor pressure
Low at room temperature, indicating limited evaporation
Environmental impact
Can be released into the environment through combustion processes, such as tobacco smoking or coal tar production
Precaution
Minimize exposure to reduce the risk of developing cancer
Regulatory status
Subject to regulations and guidelines to control exposure and emissions in certain industries and products
Detection methods
Analytical techniques like gas chromatography-mass spectrometry (GC-MS) or high-performance liquid chromatography (HPLC) can be used to detect and quantify this compound in environmental samples.
Check Digit Verification of cas no
The CAS Registry Mumber 140710-60-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,7,1 and 0 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 140710-60:
(8*1)+(7*4)+(6*0)+(5*7)+(4*1)+(3*0)+(2*6)+(1*0)=87
87 % 10 = 7
So 140710-60-7 is a valid CAS Registry Number.
140710-60-7Relevant articles and documents
Flow-vacuum pyrolysis of polycyclic compounds. 101: Pyrolysis of cyclopropa[r]-9,10-ethano-9,10-dihydroanthracene
Banciu, Mircea D.,Hada, Catalina,Parvulescu, Luminitza,Petride, Aurica,Chanon, Michel
, p. 661 - 666 (2007/10/03)
The title hydrocarbon (11) reacts thermally by two competitive routes: (a) a retrodiene reaction affording anthracene and (b) a sequence of isomerizations generating 9,10-dihydro-9,10-propenoanthracene (1), 1,1a,6,10b-tetrahydro-1,6-methanodibenzo[a,e] cyclopropa[c]cycloheptene (2), 11,11a-dihydro-6aH-benzo[a]fluorene (4), 6,11-dihydro-5H-benzo[a]fluorene (5) and finally through dehydrogenation 11H-benzo[a]fluorene (6).
FLOW-VACUUM PYROLYSIS OF POLYCYCLIC COMPOUNDS. 3. FLOW-VACUUM PYROLYSIS OF endo-10,11-DIHYDRO-5,10-ETHANO-5H-DIBENZOCYCLOHEPTEN-11-YL ACETATE AND OF endo-10,11-DIHYDRO-5,10-ETHANO-5H-DIBENZOCYCLOHEPTEN-11-OL
Banciu, Mircea D.,Stanescu, Michaela Dina,Florea, Cristina,Petride, Aurica,Cioranescu, Ecaterina
, p. 1211 - 1218 (2007/10/03)
The flow-vacuum pyrolyses of title compounds 6 and 7 were examined at 1 Torr and various temperatures between 250 deg C (respectively 300 deg C) and 650 deg C. From both pyrolyses the following hydrocarbons were formed: 9,10-dihydro-9,10-propenoanthracene (1), 1,1a,6,10b-tetrahydro-1,6-methano-dibenzocyclopropacycloheptene (2), 11,11a-dihydro-6aH-benzofluorene (3), 6,11-dihydro-5H-benzofluorene (4), 11H-benzofluorene (5) and anthracene. Besides these products the epimeric exo-acetate 10 was formed in pyrolysis of endo-acetate 6 whereas from pyrolysis of 7 important amounts of corresponding ketone 9 were obtained. A radical mechanism is suggested.
