Fullerenes - C60/C70 mixture (Contains 20% C70 and 1% higher fullerenes) (CAS 99685-96-8) — formula C60, molecular weight 720.6; category organic chemicals.
Documented applications: Uses: Carbon molecules structured as fullerenes containing 12 pentagons and 'm' hexagons, [Merck Index] Used as high-performance polymer films, transistors, lubricants, anticorrosion coatings, organic photoconductors, and energy cells, [HSDB], C60 fullerene is an insulator but exhibits electrical conductivity when doped with electropositive metals., Solid fullerenes are compressible because of the weak van der Waals forces between the fullerene molecules in the lattice. Various high-pressure phases of C60 and C70 have been characterized. When compressed to 70 percent of its original size, C60 becomes more than twice as hard as diamond. Thus, it could be applied as a shock absorber for high-energy collision or for reinforcing metals or plastics. Cross-linked polymers and high-performance polymer films can be obtained by cross-linking C60 with resins. These materials are very hard and thermally extremely stable., In C60-polymer composites, fast photo induced electron transfer occurs from the polymer to the C60 molecule and photoconductivity is observed. The efficiency of organic photoconductors could be improved by addition of C60. This discovery may lead to applications in xerography, laser printers, fax machines., The possibility of using C60 for hydrogen storage might be useful not only in energy storage cells but also in high-energy-density primary batteries., For more Uses (Complete) data for FULLERENES (8 total), please visit the HSDB record page., Synthetic Polymer MALDI Matrix Compounds, Methods of Manufacturing: Fullerene Synthesis by Combustion. ... Premixed laminar benzene-oxygen-argon flames operated at different pressures, temperatures, and carbon to oxygen ratios have been used. Besides fullerenes and soot, polyaromatic hydrocarbons are formed. The yield of fullerenes and the C70, C60 ratio strongly depend on the operating mode. The yield of C60 and C70 is in the range of 0.003-9% of the soot mass. Expressed as percentage of fuel carbon, the yields vary from 2X10-4 to 0.3%. The C70, C60 ratio varies over the range 0.26 to 5.7, which is much larger than that observed for graphite-vaporization methods (0.02-0.18). This ratio tends to increase with increasing pressure., Fullerenes can also be obtained by pyrolysis of naphthalene at 1000 °C in an argon stream. The naphthalene skeleton is a monomer of the C60 structure. The fullerenes are formed by dehydrogenative coupling reactions. Primary reaction products are polynaphthyls with up to seven naphthalene moieties. Full dehydrogenation leads to both C60 and C70 in yields less than 0.5%. Hydrofullerenes such as C60H36 have been observed as side products., The resistive heating of graphite was the first method for producing macroscopic quantities of fullerenes. The apparatus first used ... for the production of C60 was a bell jar connected to a pump and gas inlet. In the jar two graphite rods - one sharpened to a conical point and the other with a flat end - are kept in contact by a spring. The apparatus is evacuated, filled with helium at 14 kPa, and an electric current passed through the rods. This heats the point of contact to 2500 - 3000 °C and forms a black smoke, which condenses on the bell jar and a smoke catcher. The fullerenes are extracted from the soot with toluene in a yield of 10-15%. The HUFFMAN-KRATSCHMER process has been patented, and the first computer-controlled, fully automated fullerene production systems are commercially available., Arc vaporization of graphite: ... The tips of two sharpened graphite rods are kept at contact-arcing distance, so that the electric power is dissipated in an electric arc rather than in ohmic heating. This method allows efficient evaporation of carbon, the yield of fullerenes is about 15%. The disadvantage of this method is the intense UV radiation originating from the arc plasma. The absorption of UV light by fullerenes produces a triplet state T1 with a lifetime of a few microseconds. In the T1 state, the fullerene is an open-shell system that can readily react with other carbon species Cn to give a nonvaporizable insoluble product., For more Methods of Manufacturing (Complete) data for FULLERENES (10 total), Formulations, Preparations: For soccer-ball-shaped C60 only one isolated pentagon rule (IPR) is possible, it is the smallest stable fullerene. The rugby-ball-like C70 also has only one IPR and is the next stable homologue, followed by the higher fullerenes C76, C78, C80, C82, C84, C90, and C96, Many of the higher fullerenes are chiral ... the number of possible chiral isomers increases with increasing cage size., General Manufacturing Information: Fullerenes and fullerene-like nanostructures are defined as polyhedral cages made up entirely of five- and six-membered rings. The structural principle obeys Euler's theorem, which states that for the closure of a spherical network of N hexagons, twelve pentagons are required, with the exception of N = 1. Therefore, fullerenes contain 2(10 + N) carbon atoms. Hence, the smallest conceivable fullerene is C20, and all fullerenes must contain an even number of carbon atoms., The geodesic structure of C60 was named buckminsterfullerene after ..., Richard Buckminster Fuller, who popularized the use of geodesic domes in building construction. This term is now used only rarely, but it gave rise to the abbreviation "fullerenes" for this class of molecules., C60 can be named (60-, h)fullerene .. The number 60 denotes the number of carbon atoms, the ", h" the symmetry group, Fullerene derivatives can be created by adding endo- or exohedral substituents. This opens the possibility of obtaining a wide range of building blocks for developing new materials with unique properties., For more General Manufacturing Information (Complete) data for FULLERENES (14 total).
Fullerenes - C60/C70 mixture (Contains 20% C70 and 1% higher fullerenes) is a carbon-based organic compound with CAS registry number 99685-96-8 and molecular formula C60 (molecular weight 720.6), belonging to the organic chemicals segment of chemical raw materials.
CAS number: 99685-96-8
Its molecular formula C60 comprises 60 C atom.
Also known as: Fullerenes - C60/C70 mixture (Contains 20% C70 and 1% higher fullerenes) · Fullerene C60
Category: organic chemicals
The CAS registry number of Fullerenes - C60/C70 mixture (Contains 20% C70 and 1% higher fullerenes) is 99685-96-8.
Molecular formula C60, molecular weight 720.6.
It is also registered under: Fullerenes - C60/C70 mixture (Contains 20% C70 and 1% higher fullerenes), Fullerene C60.
Recorded applications: Uses: Carbon molecules structured as fullerenes containing 12 pentagons and 'm' hexagons, [Merck Index] Used as high-performance polymer films, transistors, lubricants, anticorrosion coatings, organic photoconductors, and energy cells, [HSDB], C60 fullerene is an insulator but exhibits electrical conductivity when doped with electropositive metals., Solid fullerenes are compressible because of the weak van der Waals forces between the fullerene molecules in the lattice. Various high-pressure phases of C60 and C70 have been characterized. When compressed to 70 percent of its original size, C60 becomes more than twice as hard as diamond. Thus, it could be applied as a shock absorber for high-energy collision or for reinforcing metals or plastics. Cross-linked polymers and high-performance polymer films can be obtained by cross-linking C60 with resins. These materials are very hard and thermally extremely stable., In C60-polymer composites, fast photo induced electron transfer occurs from the polymer to the C60 molecule and photoconductivity is observed. The efficiency of organic photoconductors could be improved by addition of C60. This discovery may lead to applications in xerography, laser printers, fax machines., The possibility of using C60 for hydrogen storage might be useful not only in energy storage cells but also in high-energy-density primary batteries., For more Uses (Complete) data for FULLERENES (8 total), please visit the HSDB record page., Synthetic Polymer MALDI Matrix Compounds, Methods of Manufacturing: Fullerene Synthesis by Combustion. ... Premixed laminar benzene-oxygen-argon flames operated at different pressures, temperatures, and carbon to oxygen ratios have been used. Besides fullerenes and soot, polyaromatic hydrocarbons are formed. The yield of fullerenes and the C70, C60 ratio strongly depend on the operating mode. The yield of C60 and C70 is in the range of 0.003-9% of the soot mass. Expressed as percentage of fuel carbon, the yields vary from 2X10-4 to 0.3%. The C70, C60 ratio varies over the range 0.26 to 5.7, which is much larger than that observed for graphite-vaporization methods (0.02-0.18). This ratio tends to increase with increasing pressure., Fullerenes can also be obtained by pyrolysis of naphthalene at 1000 °C in an argon stream. The naphthalene skeleton is a monomer of the C60 structure. The fullerenes are formed by dehydrogenative coupling reactions. Primary reaction products are polynaphthyls with up to seven naphthalene moieties. Full dehydrogenation leads to both C60 and C70 in yields less than 0.5%. Hydrofullerenes such as C60H36 have been observed as side products., The resistive heating of graphite was the first method for producing macroscopic quantities of fullerenes. The apparatus first used ... for the production of C60 was a bell jar connected to a pump and gas inlet. In the jar two graphite rods - one sharpened to a conical point and the other with a flat end - are kept in contact by a spring. The apparatus is evacuated, filled with helium at 14 kPa, and an electric current passed through the rods. This heats the point of contact to 2500 - 3000 °C and forms a black smoke, which condenses on the bell jar and a smoke catcher. The fullerenes are extracted from the soot with toluene in a yield of 10-15%. The HUFFMAN-KRATSCHMER process has been patented, and the first computer-controlled, fully automated fullerene production systems are commercially available., Arc vaporization of graphite: ... The tips of two sharpened graphite rods are kept at contact-arcing distance, so that the electric power is dissipated in an electric arc rather than in ohmic heating. This method allows efficient evaporation of carbon, the yield of fullerenes is about 15%. The disadvantage of this method is the intense UV radiation originating from the arc plasma. The absorption of UV light by fullerenes produces a triplet state T1 with a lifetime of a few microseconds. In the T1 state, the fullerene is an open-shell system that can readily react with other carbon species Cn to give a nonvaporizable insoluble product., For more Methods of Manufacturing (Complete) data for FULLERENES (10 total), Formulations, Preparations: For soccer-ball-shaped C60 only one isolated pentagon rule (IPR) is possible, it is the smallest stable fullerene. The rugby-ball-like C70 also has only one IPR and is the next stable homologue, followed by the higher fullerenes C76, C78, C80, C82, C84, C90, and C96, Many of the higher fullerenes are chiral ... the number of possible chiral isomers increases with increasing cage size., General Manufacturing Information: Fullerenes and fullerene-like nanostructures are defined as polyhedral cages made up entirely of five- and six-membered rings. The structural principle obeys Euler's theorem, which states that for the closure of a spherical network of N hexagons, twelve pentagons are required, with the exception of N = 1. Therefore, fullerenes contain 2(10 + N) carbon atoms. Hence, the smallest conceivable fullerene is C20, and all fullerenes must contain an even number of carbon atoms., The geodesic structure of C60 was named buckminsterfullerene after ..., Richard Buckminster Fuller, who popularized the use of geodesic domes in building construction. This term is now used only rarely, but it gave rise to the abbreviation "fullerenes" for this class of molecules., C60 can be named (60-, h)fullerene .. The number 60 denotes the number of carbon atoms, the ", h" the symmetry group, Fullerene derivatives can be created by adding endo- or exohedral substituents. This opens the possibility of obtaining a wide range of building blocks for developing new materials with unique properties., For more General Manufacturing Information (Complete) data for FULLERENES (14 total).
Category: Organic Chemicals.
Public-database records for Fullerenes - C60/C70 mixture (Contains 20% C70 and 1% higher fullerenes) (CAS 99685-96-8), reproduced here for independent cross-checking.
| Reported hazard statements | H315 (22.4%), H319 (100%), H335 (98.3%) |
|---|
H315 (22.4%): Causes skin irritation [Warning Skin corrosion/irritation]
H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
| Collision Cross Section | 210.8 Ų [M*]+ |
|---|
| CAS Registry Number | 99685-96-8 |
|---|---|
| PubChem CID | 123591 |
| 分子式 | C60 |
| IUPAC 名称 | (C60-Ih)[5,6]fullerene |
| UNII（FDA） | NP9U26B839 |
Fullerene; Fullerenes; Buckyballs; Buckminsterfullerenes; RefChem:5620; CHEBI:33416; DTXSID501336805; 99685-96-8; Buckminsterfullerene; Fullerene-C60; Fullerene C60; C60 Fullerene; Buckyball; 131159-39-2; [5,6]fullerene-C60-Ih; [60]fullerene
| 分子量 | 720.6 |
|---|---|
| XLogP3 | 18.3 |
| 氢键供体数 | 0 |
| 氢键受体数 | 0 |
| 可旋转键数 | 0 |
| 精确质量 | 720 |
| 单同位素质量 | 720 |
| 拓扑极性表面积 | 0 |
| 重原子数 | 60 |
| 形式电荷 | 0 |
Fullerenes - C60/C70 mixture (Contains 20% C70 and 1% higher fullerenes) · CAS 99685-96-8 · C60. UNII NP9U26B839. Collision Cross Section: 210.8 Ų [M*]+.
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd. · Reply within one business day.