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Cas Database

56-23-5

56-23-5

Identification

  • Product Name:Methane, tetrachloro-

  • CAS Number: 56-23-5

  • EINECS:200-262-8

  • Molecular Weight:153.823

  • Molecular Formula: CCl4

  • HS Code:2903.14

  • Mol File:56-23-5.mol

Synonyms:Carbontetrachloride (8CI);Benzinoform;CC m0;Carbon chloride (CCl4);Carbona;Flukoids;Halon 1040;NSC 97063;Necatorina;Perchloromethane;R 10;R 10(refrigerant);Tetrachloromethane;Tetrafinol;Tetraform;Tetrasol;Univerm;Vermoestricid;

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Safety information and MSDS view more

  • Pictogram(s):ToxicT,DangerousN,FlammableF

  • Hazard Codes:T,N,F

  • Signal Word:Danger

  • Hazard Statement:H301 Toxic if swallowedH311 Toxic in contact with skin H331 Toxic if inhaled H351 Suspected of causing cancer H372 Causes damage to organs through prolonged or repeated exposure H412 Harmful to aquatic life with long lasting effects H420 Harms public health and the environment by destroying ozone in the upper atmosphere

  • First-aid measures: General adviceConsult a physician. Show this safety data sheet to the doctor in attendance.If inhaled Fresh air, rest. Artificial respiration may be needed. Refer for medical attention. In case of skin contact Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention . In case of eye contact First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. If swallowed Rinse mouth. Give one or two glasses of water to drink. Refer for medical attention . Dizziness, incoordination, anesthesia; may be accompanied by nausea and liver damage. Kidney damage also occurs, often producing decrease or stopping of urinary output. (USCG, 1999) Irrigate eyes with water. Wash contaminated areas of body with soap and water. Gastric lavage, if swallowed, followed by saline catharsis. Oxygen and artificial respiration.

  • Fire-fighting measures: Suitable extinguishing media When fighting a fire in which carbon tetrachloride is involved, wear self-contained breathing apparatus. Special Hazards of Combustion Products: Forms poisonous phosgene gas when exposed to open flames. Behavior in Fire: Decomposes to form chlorine and phosgene (USCG, 1999) Wear self-contained breathing apparatus for firefighting if necessary.

  • Accidental release measures: Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. For personal protection see section 8. Personal protection: complete protective clothing including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Collect leaking and spilled liquid in covered containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. 1. VENTILATE AREA OF SPILL OR LEAK. 2. COLLECT FOR RECLAMATION OR ABSORB IN VERMICULITE, DRY SAND, EARTH, OR A SIMILAR MATERIAL.

  • Handling and storage: Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Avoid exposure - obtain special instructions before use.Provide appropriate exhaust ventilation at places where dust is formed. For precautions see section 2.2. Separated from food and feedstuffs and metals. See Chemical Dangers. Ventilation along the floor. Cool.Store in a cool, dry, well-ventilated location. Separate from alkali metals.

  • Exposure controls/personal protection:Occupational Exposure limit valuesRecommended Exposure Limit: 60 Min Short-Term Exposure Limit: 2 ppm, 12.6 mg/cu mNIOSH has recommended that carbon tetrachloride be treated as a potential human carcinogen.NIOSH usually recommends that occupational exposures to carcinogens be limited to the lowest feasible concn.Biological limit values Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday. Eye/face protection Safety glasses with side-shields conforming to EN166. Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU). Skin protection Wear impervious clothing. The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique(without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it. Respiratory protection Wear dust mask when handling large quantities. Thermal hazards

Supplier and reference price

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  • Manufacture/Brand:SynQuest Laboratories
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Relevant articles and documentsAll total 71 Articles be found

-

Johnson et al.

, p. 499 (1959)

-

Dismutation of CFC-12 to CFC-13 over Chromia-Alumina Catalyst

Venugopal, A.,Rao, K. S. Rama,Prased, P. S. Sai,Rao, P. Kanta

, p. 2377 - 2378 (1995)

Selective transformation of CCl2F2 (CFC-12) to fluorine-rich CClF3 (CFC-13) in the absence of HF over a chromia-alumina catalyst has been achieved.

Newton,Rollefson

, p. 718 (1940)

-

Whiston

, p. 183 - 183 (1920)

-

Cheng et al.

, p. 435 (1971)

Photocatalysis of Chloroform Decomposition by Tetrachlorocuprate (II) on Dowex 2-X8

Harvey, Brent M.,Hoggard, Patrick E.

, p. 1234 - 1242 (2014)

Heterogenized on a polystyrene anion exchange resin and in the presence of oxygen, CuCl24 catalyzes the photodecomposition of chloroform at wavelengths above 345 nm with greater efficiency than an equivalent amount in homogeneous solution. The reaction is proposed to proceed in two stages, the first stage yielding CCl4 and HO2 as products, the second consisting of a chain reaction resulting from the CuCl2 4-catalyzed photodissociation of CCl4, yielding phosgene with CCl3 radicals as chain carriers. Photodecomposition is retarded by added Cl, CH3CN, C6H12 or C2H5OH, which is ascribed to the displacement of CHCl3 molecules from the vicinity of the copper by attraction to the polystyrene matrix or to the alkylammonium cation sites.

Cadman, P.,Simons, J. P.

, p. 631 - 641 (1966)

Kinetics and mechanism of the thermal chlorination of chloroform in the gas phase

Huybrechts,Hubin,Van Mele

, p. 466 - 472 (2000)

The gas-phase thermal chlorination of CHCl3 has been studied up to high conversions by photometry and gas chromatography in a conditioned static quartz reaction vessel between 573 and 635 K. The initial pressures of both CHCl3 and Cl2 ranged from about 10-100 Torr, and the initial total pressure was varied between about 30-190 Torr. The reaction is rather complex because the produced CCl4 is not stable. The rate of consumption of Cl2 therefore increases in the course of time. This acceleration is explained quantitatively in terms of a radical mechanism and its kinetic and thermodynamic parameters. This reaction model is based on a known model for the pyrolysis of CCl4 to which only one reaction couple involving CHCl3 has been added. Analyses of the rates of the homogeneous elementary steps show that the primary source of Cl atoms is the second-order dissociation of Cl2, which is rapidly superseded by a secondary source, the first-order dissociation of the CCl4 primary product.

Changing the product state distribution and kinetics in photocatalytic surface reactions using pulsed laser irradiation [11]

Miller,Borisch,Raftery,Francisco

, p. 8265 - 8266 (1998)

-

Hopkins et al.

, p. 574 (1971)

Boswell,McLaughlin

, (1930)

Meissner,Thode

, p. 129 (1951)

Kiprianow,Kussner

, (1936)

Activation of Methane by Supported Rhodium Complexes

Kitajima, Nobumasa,Schwartz, Jeffrey

, p. 2220 - 2222 (1984)

-

A new strategy to improve catalytic activity for chlorinated volatile organic compounds oxidation over cobalt oxide: Introduction of strontium carbonate

Liu, Hao,Shen, Kai,Zhao, Hailin,Jiang, Yongjun,Guo, Yanglong,Guo, Yun,Wang, Li,Zhan, Wangcheng

, (2021)

Co3O4–SrCO3 catalysts with various Sr/Co ratios were synthesized by the coprecipitation method, and their properties were tuned by adjusting the Sr/Co molar ratio. Furthermore, the catalytic combustion of vinyl chloride (VC) was used to evaluate the catalytic activity of the Co3O4–SrCO3 catalysts. The physicochemical properties of the catalysts were studied by X-ray diffraction (XRD), infrared spectroscopy (IR), N2 sorption, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), H2 temperature-programmed reduction (H2-TPR) and VC temperature-programmed desorption (VC-TPD). The results showed that the Co3O4–SrCO3 catalysts exhibited composite phases of Co3O4 and SrCO3 and the presence of interactions between them. As a result, the crystallization of the Co3O4 phase for the Co3O4–SrCO3 catalysts was restrained, and the state of Co on the catalyst surface was adjusted. Furthermore, the reducibility and VC adsorption capacity of the Co3O4–SrCO3 catalysts with Sr/Co molar ratios of 0.2 and 0.4 were enhanced compared with those of the Co3O4 catalyst. Otherwise, catalyst SrCo-0.4 exhibited excellent catalytic performance, accompanied by the highest reaction rate and the lowest apparent activation energy. More importantly, the optimized SrCO3–Co3O4 catalyst showed superior catalytic performance compared with other transition metal oxides in previous literature. These results brought a new idea for promoting the activity of transition metal catalysts for the deep oxidation of chlorinated volatile organic compounds (CVOCs) by introducing alkaline-earth metal salts.

Total Oxidation of Chlorinated Hydrocarbons by Copper and Chlorine based Catalysts

Green, Malcolm L. H.,Lago, Rochel M.,Tsang, Shik Chi

, p. 365 - 366 (1995)

A new class of combustion catalyst containing copper and chlorine is described which has high activity for the total oxidation of chlorinated hydrocarbons such as CH2Cl2, CH2ClCH2Cl, CCl4 and 1,2-dichlorobenzene (1percent of gas stream) into carbon oxides, HCl and Cl2, in the presence of excess air at 300-500 deg C; no catalyst deactivation or loss of copper or chlorine is observed.

Nanocrystal metal oxide-chlorine adducts: Selective catalysts for chlorination of alkanes [3]

Sun, Naijian,Klabunde, Kenneth J.

, p. 5587 - 5588 (1999)

-

The laser two-photon photolysis of liquid carbon tetrachloride

Zhang,Thomas

, p. 158 - 162 (2006)

The two-photon photolysis of liquid CCl4 with 25 ps pulses of 266 nm light has been studied and compared with similar studies with high energy radiation. Both neutral and ionic species are produced from excited states and ionization. The emphasis of the study is on the ionic processes, while some data related to excited states and free radicals are presented. In both radiolysis and photolysis, a solvent separated charged pair, CCl3+ ∥ Cl-, exhibiting a λmax at 475 nm, is observed that exhibits a total growth over 38 to 100 ps. Solutes with ionization potentials less than that of CCl4 (11.47 eV) reduce the yield of the 475 nm species producing radical cations of the solute. The efficiency of this process is about 10-fold larger in radiolysis compared with photolysis. Analysis of the data suggest that the lower energy of two-photon photolysis produces a charge pair CCl4+ ∥ CCl4-, which decays in about 3 ps to CCl4+ ∥ Cl-. This species then decays to CCl3+ ∥ Cl-. The lifetime of the growth of the 475 nm is measured as 46 ps. These studies clearly show areas where radiolysis and photolysis can be quite similar and also areas where the vast difference in excitation energy introduces stark differences in the observed radiation and photoinduced chemistry.

Onion-Like Graphene Carbon Nanospheres as Stable Catalysts for Carbon Monoxide and Methane Chlorination

Centi, Gabriele,Barbera, Katia,Perathoner, Siglinda,Gupta, Navneet K.,Ember, Erika E.,Lercher, Johannes A.

, p. 3036 - 3046 (2015)

Thermal treatment induces a modification in the nanostructure of carbon nanospheres that generates ordered hemi-fullerene-type graphene shells arranged in a concentric onion-type structure. The catalytic reactivity of these structures is studied in comparison with that of the parent carbon material. The change in the surface reactivity induced by the transformation of the nanostructure, characterized by TEM, XRD, X-ray photoelectron spectroscopy (XPS), Raman, and porosity measurements, is investigated by multipulses of Cl2 in inert gas or in the presence of CH4 or CO. The strained C-C bonds (sp2-type) in the hemi-fullerene-type graphene shells induce unusually strong, but reversible, chemisorption of Cl2 in molecular form. The active species in CH4 and CO chlorination is probably in the radical-like form. Highly strained C-C bonds in the parent carbon materials react irreversibly with Cl2, inhibiting further reaction with CO. In addition, the higher presence of sp3-type defect sites promotes the formation of HCl with deactivation of the reactive C-C sites. The nano-ordering of the hemi-fullerene-type graphene thus reduces the presence of defects and transforms strained C-C bonds, resulting in irreversible chemisorption of Cl2 to catalytic sites able to perform selective chlorination. Tidy up the carbon! CO and CH4 chlorination over hemi-fullerene-type graphene is described. The surface nano-ordering, induced by thermal treatment, transforms strained C-C bond sites resulting in irreversible Cl2 chemisorption to catalytic sites that are able to selectively chlorinate CO and CH4.

Kinetics of the R + Cl2 (R = CH2Cl, CHBrCl, CCl3 and CH3CCl2) reactions. An ab initio study of the transition states

Seetula, Jorma A.

, p. 3561 - 3567 (1998)

The kinetics of the reactions of CH2Cl, CHBrCl, CCl3 and CH3CCl2 radicals with molecular chlorine were investigated in a heatable tubular reactor coupled to a photoionization mass spectrometer. The reactions were studied under pseudo-first-order conditions. The radicals were photogenerated at 248 nm. The pressure-independent rate constants determined were fitted to the following Kooij and Arrhenius expressions (units in cm3 molecule-1 s-1): k-(CH2Cl) = 7.56 × 10-17(T)1.45 exp(-350 J mol-1/RT), k(CHBrCl) = 5.83 × 10-20(T)2.3 exp(-300 J mol-1/RT), k(CCl3) = (8.4 ± 2.9) × 10-13 exp[-(25 ± 9) kJ mol-1/RT] and k(CH3CCl2) = 1.10 × 10-26(T)4.3 exp(+15000 J mol-1/RT). The Arrhenius rate expression for the Cl + CCl4 reaction was determined to be k(Cl + CCl4) = (3.9 ± 3.2) × 10-13 exp[-(71 ± 9) kJ mol-1/RT] using the kinetics measured and the thermochemistry of the CCl3 radical. Errors for the Kooij expressions were estimated to be 25% overall, and for the Arrhenius expressions they were calculated to be 1σ + Student's t values. The transition states of the measured R + Cl2 and four other similar reactions were localized and fully optimized at the MP2/6-31G(d,p) level of theory by ab initio methods. The energetics of the reactions were considered by determining thermochemical and activation parameters of the reactions. The reactivity differences of the radicals studied were explained by a free-energy correlation using an electronegativity difference scale.

-

Mare, G. R. De,Huybrechts, G.

, p. 1311 - 1318 (1968)

-

Aluminium(III) Chloride-Chlorohydrocarbon Chemistry. Fourier Transform Infra-red Spectroscopic Studies of the Reactions between Solid Aluminium(III) Chloride and 1,1,1-Trichloroethane or 1,1-Dichloroethene Vapours

McBeth, David G.,Winfield, John M.,Cook, Bernard W.,Winterton, Neil

, p. 671 - 676 (1990)

The reactions of 1,1,1-trichloroethane and 1,1-dichloroethene vapours with solid aluminium(III) chloride have been studied using Fourier-transform i.r. spectroscopy to determine stoicheiometries as a function of time.Dehydrochlorination of 1,1,1-trichloroethane to give 1,1-dichloroethene and hydrogen chloride appears to be the only important process in the initial stage of the reaction, but the 1,1-dichloroethene formed reacts with the solid phase and the main product is a mixture of involatile chlorohydrocarbon species.The quantity of hydrogen chloride evolved indicates that the involatile material is highly unsaturated and in both reactions AlCl3 becomes progressively coated with a strongly purple-coloured tar.Small quantities of carbon tetrachloride are also produced in both reactions.

-

Petersen, D. E.,Pitzer, K. S.

, p. 1252 - 1253 (1957)

-

A process of preparing methyl chloride using multistage reaction

-

Paragraph 0092-0100; 0112; 0120, (2020/06/10)

The present invention relates to a method of producing methyl chloride by multistage reactions. The method of the present invention comprises: a) a chlorination step for sufficiently increasing the conversion rate of methane, which is an initial reactant; and b) a subsequent reaction step for actively utilizing hydrogen chloride (HCl), which is a hazardous byproduct of chlorination, efficiently treating harmful hydrogen chloride, and at the same time, improving the overall production of methyl chloride.COPYRIGHT KIPO 2020

PRODUCTION OF CARBON TETRACHLORIDE FROM NATURAL GAS

-

Paragraph 0058, (2020/07/07)

The present invention provides processes to prepare carbon tetrachloride by the chlorination of natural gas in the presence of a diluent.

Nitrogen-Doped Carbon-Assisted One-pot Tandem Reaction for Vinyl Chloride Production via Ethylene Oxychlorination

Chen, De,Chen, Qingjun,Fuglerud, Terje,Ma, Guoyan,Ma, Hongfei,Qi, Yanying,Rout, Kumar R.,Wang, Yalan

supporting information, p. 22080 - 22085 (2020/10/02)

A bifunctional catalyst comprising CuCl2/Al2O3 and nitrogen-doped carbon was developed for an efficient one-pot ethylene oxychlorination process to produce vinyl chloride monomer (VCM) up to 76 % yield at 250 °C and under ambient pressure, which is higher than the conventional industrial two-step process (≈50 %) in a single pass. In the second bed, active sites containing N-functional groups on the metal-free N-doped carbon catalyzed both ethylene oxychlorination and ethylene dichloride (EDC) dehydrochlorination under the mild conditions. Benefitting from the bifunctionality of the N-doped carbon, VCM formation was intensified by the surface Cl*-looping of EDC dehydrochlorination and ethylene oxychlorination. Both reactions were enhanced by in situ consumption of surface Cl* by oxychlorination, in which Cl* was generated by EDC dehydrochlorination. This work offers a promising alternative pathway to VCM production via ethylene oxychlorination at mild conditions through a single pass reactor.

METHOD OF CONVERTING ALKANES TO ALCOHOLS, OLEFINS AND AROMATICS

-

Paragraph 0054-0055, (2019/08/08)

A cost-effective and energy-efficient process is disclosed for converting a methane-containing gas to a methane sulfonyl halide comprising reacting the methane-containing gas, under illumination by a light emitting diode (LED) source, with a sulfuryl halide or a halogen in the presence of sulfur dioxide, whereby the methane sulfonyl halide is obtained for isolation or further reactions. The further reactions may sequentially include, in order, contacting the methane sulfonyl halide with a catalyst complex to form a methane monohalide; catalytically converting the methane monohalide to a value-added chemical such as an alcohol, an olefin, an aromatic, derivatives thereof, or mixtures thereof; releasing any hydrogen halide formed in the process; and converting the hydrogen halide to a halogen and recycling it for re-use.

Process route upstream and downstream products

Process route

carbon disulfide
75-15-0,12122-00-8

carbon disulfide

antimonypentachloride
7647-18-9

antimonypentachloride

tetrachloromethane
56-23-5

tetrachloromethane

antimony(III) chloride
10025-91-9

antimony(III) chloride

Conditions
Conditions Yield
carbon disulfide
75-15-0,12122-00-8

carbon disulfide

iodine trichloride
865-44-1

iodine trichloride

disulfur dichloride
10025-67-9

disulfur dichloride

tetrachloromethane
56-23-5

tetrachloromethane

sulfur tetrachloride * iodine trichloride

sulfur tetrachloride * iodine trichloride

Conditions
Conditions Yield
In neat (no solvent); room temp.;;
carbon disulfide
75-15-0,12122-00-8

carbon disulfide

chlorine
7782-50-5

chlorine

disulfur dichloride
10025-67-9

disulfur dichloride

tetrachloromethane
56-23-5

tetrachloromethane

thiophosgene
463-71-8

thiophosgene

Conditions
Conditions Yield
In gas; passing through glowing tube of porcelaine;;
carbon disulfide
75-15-0,12122-00-8

carbon disulfide

chlorine
7782-50-5

chlorine

disulfur dichloride
10025-67-9

disulfur dichloride

tetrachloromethane
56-23-5

tetrachloromethane

Conditions
Conditions Yield
In neat (no solvent); room temp.; presence of iodine, SbCl5, MoCl5;;
phosgene
75-44-5

phosgene

phosphorus pentachloride
10026-13-8,874483-75-7

phosphorus pentachloride

tetrachloromethane
56-23-5

tetrachloromethane

Conditions
Conditions Yield
High Pressure; 300-400°C, high pressure in autoclave, no react. at atm. pressure and 50-100°C;
60-70
High Pressure; 300-400°C, high pressure in autoclave, no react. at atm. pressure and 50-100°C;
60-70
carbon disulfide
75-15-0,12122-00-8

carbon disulfide

vanadiumtetrachloride
7632-51-1

vanadiumtetrachloride

disulfur dichloride
10025-67-9

disulfur dichloride

tetrachloromethane
56-23-5

tetrachloromethane

vanadium(III) chloride
7718-98-1

vanadium(III) chloride

sulfur
7704-34-9

sulfur

Conditions
Conditions Yield
In neat (no solvent); heating at red heat;;
In neat (no solvent); heating at red heat;;
trichlorofluoromethane
75-69-4

trichlorofluoromethane

uranium(VI) trioxide

uranium(VI) trioxide

tetrachloromethane
56-23-5

tetrachloromethane

phosgene
75-44-5

phosgene

uranium(IV) tetrafluoride
10049-14-6

uranium(IV) tetrafluoride

chlorine
7782-50-5

chlorine

Conditions
Conditions Yield
In neat (no solvent); reaction with UO3-powder at 350-360°C;;
Conditions
Conditions Yield
at 300 - 500 ℃;
dichloromethane
75-09-2

dichloromethane

tetrachloromethane
56-23-5

tetrachloromethane

chloroform
67-66-3,8013-54-5

chloroform

Conditions
Conditions Yield
With chlorine; In water; at 82 ℃; under 4380.18 Torr; UV-irradiation;

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