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Chlormethan

METHYL CHLORIDE Struktur
74-87-3
CAS-Nr.
74-87-3
Bezeichnung:
Chlormethan
Englisch Name:
METHYL CHLORIDE
Synonyma:
CHLOROMETHANE;CH3Cl;R40;Chlormethan;Methylchlorid;Methane,chloro-;Monochloromethane;CHLOROMETHANE, 1X1ML, MEOH, 200UG/ML;R-40;R 40
CBNumber:
CB9673584
Summenformel:
CH3Cl
Molgewicht:
50.49
MOL-Datei:
74-87-3.mol

Chlormethan Eigenschaften

Schmelzpunkt:
−97 °C(lit.)
Siedepunkt:
−24.2 °C(lit.)
Dichte
0.915 g/mL at 25 °C(lit.)
Dampfdichte
1.74 (vs air)
Dampfdruck
3796 mm Hg ( 20 °C)
Brechungsindex
1.0007
Flammpunkt:
<-30 °F
storage temp. 
2-8°C
Löslichkeit
water: soluble5.32g/L at 25°C
Aggregatzustand
Colorless gas
Explosionsgrenze
19%
Wasserlöslichkeit
5.347g/L(24.9 ºC)
Merck 
14,6041
BRN 
1696839
Henry's Law Constant
In seawater: 5.22 at 5 °C, 6.36 at 10 °C, 8.72 at 15 °C, 9.35 at 20 °C, 11.20 at 25 °C (Moore, 2000)
Expositionsgrenzwerte
TLV-TWA 50 ppm (~105 mg/m3) (ACGIH), 100 ppm (~210 mg/m3) (OSHA); ceiling 100 ppm (MSHA), 200 ppm (OSHA); TLV STEL 100 ppm (ACGIH); carcinogenicity: Animal Inadequate Evidence, Human Inad equate Evidence (IARC).
Stabilität:
Stable. May react violently or explosively with interhalogens, magnesium, zinc, potassium, sodium or their alloys. Incompatible with natural rubber and neoprene composites, but does not attack PVA. Highly flammable. May decompose upon exposure to moist air or water.
CAS Datenbank
74-87-3(CAS DataBase Reference)
IARC
3 (Vol. 41, Sup 7, 71) 1999
EPA chemische Informationen
Chloromethane (74-87-3)
Sicherheit
  • Risiko- und Sicherheitserklärung
  • Gefahreninformationscode (GHS)
Kennzeichnung gefährlicher F+,Xn,T,F
R-Sätze: 12-40-48/20-67-66-22-19-38-23/25-11-39/23/24/25-23/24/25-62-63
S-Sätze: 9-16-33-29-36-24-45-7-36/37
RIDADR  UN 1993 3/PG 1
WGK Germany  2
RTECS-Nr. PA6300000
Selbstentzündungstemperatur 1169 °F
DOT Classification 2.1 (Flammable gas)
HazardClass  2.1
PackingGroup  II
Giftige Stoffe Daten 74-87-3(Hazardous Substances Data)
Toxizität LC50 (inhalation) for mice 3,146 ppm/7-h, rats 152,000 mg/m3/30-min (quoted, RTECS, 1985).
IDLA 2,000 ppm
Bildanzeige (GHS)
Alarmwort Achtung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H221 Entzündbares Gas. Entzündbare Gase Kategorie 2 Warnung P210, P377, P381, P403
H280 Enthält Gas unter Druck; kann bei Erwärmung explodieren. Gase unter Druck verflüssigtes Gas Warnung P410+P403
H351 Kann vermutlich Krebs verursachen. Karzinogenität Kategorie 2 Warnung P201, P202, P281, P308+P313, P405,P501
H373 Kann die Organe schädigen bei längerer oder wiederholter Exposition. Spezifische Zielorgan-Toxizität (wiederholte Exposition) Kategorie 2 Warnung P260, P314, P501
H420 Schädigt die öffentliche Gesundheit und die Umwelt durch Ozonabbau in der äußeren Atmosphäre. Die Ozonschicht schädigend Kategorie 1 Warnung P502
Sicherheit
P202 Vor Gebrauch alle Sicherheitshinweise lesen und verstehen.
P210 Von Hitze, heißen Oberflächen, Funken, offenen Flammen und anderen Zündquellenarten fernhalten. Nicht rauchen.
P260 Dampf/Aerosol/Nebel nicht einatmen.
P308+P313 BEI Exposition oder falls betroffen: Ärztlichen Rat einholen/ärztliche Hilfe hinzuziehen.
P410+P403 Vor Sonnenbestrahlung schützen. An einem gut belüfteten Ort aufbewahren.
P502 Informationen zur Wiederverwendung/ Wiederverwertung beim Hersteller/ Lieferanten erfragen.

Chlormethan Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD

FARBLOSES VERFLüSSIGTES GAS.

PHYSIKALISCHE GEFAHREN

Das Gas ist schwerer als Luft und kann sich am Boden ausbreiten. Fernzündung möglich,. Es kann sich in tiefer gelegenen Bereichen sammeln und den Luftsauerstoff verdrängen.(S. Anm.)

CHEMISCHE GEFAHREN

Zersetzung beim Verbrennen unter Bildung giftiger und ätzender Rauche mit Chlorwasserstoff und Phosgen Reagiert sehr heftig mit pulverförmigem Aluminium, pulverförmigem Zink, Aluminiumtrichlorid und Ethylen unter Feuer- und Explosionsgefahr. Greift viele Metalle in Gegenwart von Feuchtigkeit an.

ARBEITSPLATZGRENZWERTE

TLV: 50 ppm (als TWA); 100 ppm (als STEL); Hautresorption; Krebskategorie A4 (nicht klassifizierbar als krebserzeugend für den Menschen); (ACGIH 2005).
MAK: 50 ppm, 100 mg/m? Spitzenbegrenzung: überschreitungsfaktor II(2); Hautresorption; Krebserzeugend Kategorie 3B; Schwangerschaft: Gruppe B; (DFG 2005).

AUFNAHMEWEGE

Aufnahme in den Körper durch Inhalation und über die Haut.

INHALATIONSGEFAHREN

Eine gesundheitsschädliche Konzentration des Gases in der Luft wird beim Entweichen aus dem Behälter sehr schnell erreicht.

WIRKUNGEN BEI KURZZEITEXPOSITION

WIRKUNGEN BEI KURZZEITEXPOSITION:
Die Flüssigkeit kann Erfrierungen hervorrufen. Möglich sind Auswirkungen auf das Zentralnervensystem. Exposition kann zu Bewusstlosigkeit führen. Exposition weit oberhalb der Arbeitsplatzgrenzwerte kann zu Schäden der Leber, des Herzkreislaufsystems und der Nieren führen. ärztliche Beobachtung notwendig.

WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION

Möglich sind Auswirkungen auf das Zentralnervensystem mit nachfolgenden Auswirkungen, festgehalten durch Verhaltenstests. Tierversuche zeigen, dass die Substanz möglicherweise fruchtbarkeitsschädigend oder entwicklungsschädigend wirken kann.

LECKAGE

Gefahrenbereich verlassen! Fachmann zu Rate ziehen! Belüftung. Wasserstrahl NIEMALS auf die Flüssigkeit richten. Persönliche Schutzausrüstung: Vollschutzanzug mit umgebungsluftunabhängigem Atemschutzgerät.

R-Sätze Betriebsanweisung:

R12:Hochentzündlich.
R40:Verdacht auf krebserzeugende Wirkung.
R48/20:Gesundheitsschädlich: Gefahr ernster Gesundheitsschäden bei längerer Exposition durch Einatmen.
R67:Dämpfe können Schläfrigkeit und Benommenheit verursachen.
R66:Wiederholter Kontakt kann zu spröder oder rissiger Haut führen.
R22:Gesundheitsschädlich beim Verschlucken.
R19:Kann explosionsfähige Peroxide bilden.
R38:Reizt die Haut.
R23/25:Giftig beim Einatmen und Verschlucken.
R11:Leichtentzündlich.

S-Sätze Betriebsanweisung:

S9:Behälter an einem gut gelüfteten Ort aufbewahren.
S16:Von Zündquellen fernhalten - Nicht rauchen.
S33:Maßnahmen gegen elektrostatische Aufladungen treffen.
S29:Nicht in die Kanalisation gelangen lassen.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S24:Berührung mit der Haut vermeiden.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
S7:Behälter dicht geschlossen halten.

Beschreibung

Methyl chloride is a colorless, flammable gas with a faintly sweet, nonirritating odor at room temperature. It is shipped as a transparent liquid under its vapor pressure of about 59 psig at 70°F (407 kPa at 21.1℃).
Methyl chloride burns feebly in air, but forms mixtures with air that can be explosive within its flammability range.
Dry methyl chloride is very stable at normal temperatures and in contact with air. In the presence of moisture, it hydrolyzes slowly, which results in the formation of corrosive hydrochloric acid. At temperatures above 700°F (371℃), methyl chloride may decompose into toxic end-products (hydrochloric acid, phosgene, chlorine, and carbon monoxide). It is slightly soluble in water and very soluble in alcohol, mineral oils, chloroform, and most organic liquids.

Chemische Eigenschaften

Methyl chloride,CH3CI, is a flammable, narcotic,colorless compressed gas or liquid with a faintly sweet odor.Slightly soluble in water and soluble in alcohol this gas boils at -23.7℃ and freezes at -97.6℃ and is used as a refrigerant, catalyst carrier, and methylating agent. Also known as chloromethane.

Physikalische Eigenschaften

Colorless, liquefied compressed gas, with a sweet, ethereal odor. Volatile flammable gas. An experimentally determined odor threshold concentration of >100 ppmv was reported by Leonardos et al. (1969).

Verwenden

Methyl chloride is used as a refrigerant,as a local anesthetic, as a blowing agentfor polystyrene foams, and as a methylat ing agent in the synthesis of a number ofchemicals of commercial application.

Definition

ChEBI: A one-carbon compound that is methane in which one of the hydrogens is replaced by a chloro group.

Vorbereitung Methode

Methyl chloride has been used in rubber adhesives and other rubber solutions; in the pharmaceutical industry; as a paint and varnish remover; in solvent degreasing; in aerosol 2 JON B. REID AND CUSTODIO V. MUIANGA formulations; in food and drug processing; in the plastics industry; in hair sprays, insecticides, and spray paints; as a cosolvent or vapor pressure depressant; as a blowing agent for flexible polyurethane foams; as a cleaning solvent for printed circuit boards; as a stripper solvent for photoresists; as a solvent for cellulose acetate fiber; in plastic film; in protective coatings; in chemical processing; as a carrier solvent for herbicides and insecticides; to extract heatsensitive, naturally occurring substances such as cocoa, edible fats, spices, and beer hops; for decaffeinating coffee; as a refrigerant; in oil dewaxing; as a dye and perfume intermediate; in the textile industry; as a postharvest fumigant for strawberries; as a grain fumigant; for degreening citrus fruits; as an industrial solvent; in low-temperature extraction; as a solvent for oil, fats, bitumen, esters, resins, and rubber; in coating photographic films; as a food additive; in synthetic fibers and leather coatings; as a spotting agent; and in organic synthesis.

Allgemeine Beschreibung

A colorless gas with a faint sweet odor. Shipped as a liquid under its vapor pressure. A leak may either be liquid or vapor. Contact with the liquid may cause frostbite by evaporative cooling. Easily ignited. Vapors heavier than air. Can asphyxiate by the displacement of air. Under prolonged exposure to fire or intense heat the containers may rupture violently and rocket. Used to make other chemicals and as a herbicide.

Air & Water Reaktionen

Highly flammable.

Reaktivität anzeigen

METHYL CHLORIDE can react vigorously with oxidizing agents. May react explosively with sodium, potassium, sodium-potassium alloy, magnesium, zinc. Reacts with aluminum powder in the presence of catalytic amounts of aluminum chloride to form pyrophoric trimethylaluminum. When heated to decomposition, METHYL CHLORIDE emits highly toxic fumes of chlorine [Bretherick, 5th ed., 1995, p. 176].

Hazard

Flammable, dangerous fire risk, explosive limits in air 10.7–17%. Narcotic. Psychic effects. Central nervous system impairment; liver, kidney and testicular damage, and teratogenic effects. Questionable carcinogen.

Health Hazard

Inhalation of methyl chloride can produceheadache, dizziness, drowsiness, nausea,vomiting, convulsions, coma, and respiratoryfailure. It is narcotic at high concentrations.Repeated exposures can produce liver and Methyl chloride caused adverse reproduc tive effects in test animals. These includeembryo toxicity, fetal death, developmentalabnormalities, and paternal effects in rats andmice. It tested positive to the histidine rever sion–Ames test for mutagenicity. The car cinogenic properties of this compound havenot been established. The evidence in ani mals and humans is inadequate.

Brandgefahr

Flammable gas, burns with a smoky flame; autoignition temperature 632°C (1170°F). Methyl chloride forms explosive mixtures with air within the range 7.6–19.0% by volume in air. It reacts explosively with alkali metals, potassium, sodium, or lithium; sodium–potassium alloy; and with magnesium, aluminum, or zinc in powder form.

Materials Uses

Dry methyl chloride may be contained in such common metals as steel, iron, copper, and bronze, but it has a corrosive action on zinc, aluminum, die castings, and possibly magnesium alloys. Methyl chloride must not be used with aluminum, since in the presence of moisture it forms spontaneously flammable methyl aluminum compounds upon contact with that metal. No reaction occurs, however, with the drying agent, activated alumina.
Gaskets made of natural rubber and many neoprene compositions should be avoided because methyl chloride dissolves many organic materials. Pressed fiber gaskets, including those made of asbestos may be used with methyl chloride. Polyvinyl alcohol is unaffected by methyl chloride, and its use is also recommended. Medium- soft metal gaskets may be used for applications where alternating stresses such as those resulting from large temperature changes do not lead to "ironing out" and consequent leakage.

mögliche Exposition

Methyl chloride is used as a methylating and chlorinating agent in organic chemistry; Used in production of silicones and tetramethyl lead. In petroleum refineries it is used as an extractant for greases, oils, and resins. Methyl chloride is also used as a solvent in the synthetic rubber industry; as a refrigerant; and as a propellant in polystyrene foam production. In the past it has been used as a local anesthetic (freezing). It is an intermediate in drug manufacture.

Carcinogenicity

Methyl chloride was mutagenic to bacteria and genotoxic in a number of mammalian cell systems in vitro.14 It gave positive results in the dominant lethal test in rats in vivo.
NIOSH recommends that methyl chloride be considered a potential occupational teratogen and carcinogen.
The IARC states that there is inadequate evidence for the carcinogenicity of methyl chloride to experimental animals and humans.

Environmental Fate

Biological. Enzymatic degradation of methyl chloride yielded formaldehyde (Vogel et al., 1987).
Photolytic. Reported photooxidation products via OH radicals include formyl chloride, carbon monoxide, hydrogen chloride, and phosgene (Spence et al., 1976). In the presence of water, formyl chloride hydrolyzes to HCl and carbon monoxide, whereas phosgene hydrolyzes to hydrogen chloride and carbon monoxide (Morrison and Boyd, 1971).
Methyl chloride reacts with OH radicals in the atmosphere at a rate of 8.5 x 10-14 cm3/sec with a lifetime of 135 d (Cox et al., 1976).
Chemical/Physical. The estimated hydrolysis half-life at 25 °C and pH 7 is 0.93 yr (Mabey and Mill, 1978).
The evaporation half-life of methyl chloride (1 mg/L) from water at 25 °C using a shallow-pitch propeller stirrer at 200 rpm at an average depth of 6.5 cm was 27.6 min (Dilling, 1977).

Lager

All personnel handling methyl chloride cylinders should be fully informed about the dangers that can arise from improper handling of methyl chloride. The cylinder and system should be grounded before use. Before introducing methyl chloride into any apparatus or equipment, it should be tested for leaks, all leaks repaired, and the apparatus thoroughly dried. Only nonsparking tools should be used with methyl chloride. Chemical safety goggles and/or a full-face shield should be used when handling liquid methyl chloride.

Versand/Shipping

UN1063 Methyl chloride, or Refrigerant gas R 40, Hazard Class: 2.1; Labels: 2.1-Flammable gas. Cylinders must be transported in a secure upright position, in a well-ventilated truck. Protect cylinder and labels from physical damage. The owner of the compressed gas cylinder is the only entity allowed by federal law (49CFR) to transport and refill them. It is a violation of transportation regulations to refill compressed gas cylinders without the express written permission of the owner

läuterung methode

Bubble methyl chloride through a sintered-glass disc dipped into conc H2SO4, then wash it with water, condense it at low temperature and fractionally distil it. It has been distilled from AlCl3 at -80o. Alternatively, pass it through towers containing AlCl3, soda-lime and P2O5, then condense and fractionally distil it. Store it as a gas. [Beilstein 1 IV 28.]

Inkompatibilitäten

Violent reaction with chemically active metals, such as potassium, powdered aluminum; zinc, and magnesium. Reaction with aluminum trichloride, ethylene. Reacts with water (hydrolyzes) to form hydrochloric acid. Attacks many metals in the presence of moisture

Waste disposal

Return refillable compressed gas cylinders to supplier. Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform to EPA regulations governing storage, transportation, treatment, and waste disposal. Controlled incineration with adequate scrubbing and ash disposal facilities

Chlormethan Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Chlormethan Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global( 191)Lieferanten
Firmenname Telefon E-Mail Land Produktkatalog Edge Rate
Henan Tianfu Chemical Co.,Ltd.
+86-0371-55170693 +86-19937530512
info@tianfuchem.com China 22021 55
Hubei Jusheng Technology Co.,Ltd.
86-18871470254
linda@hubeijusheng.com CHINA 28229 58
Hubei xin bonus chemical co. LTD
86-13657291602
linda@hubeijusheng.com CHINA 23034 58
HENAN BON INDUSTRIAL CO.,LTD
0371-55170695
info@hnbon.com CHINA 26742 58
CONIER CHEM AND PHARMA LIMITED
+8618523575427
sales@conier.com China 47501 58
career henan chemical co
+86-0371-86658258
factory@coreychem.com China 29862 58
Zhengzhou Alfa Chemical Co.,Ltd
+86-18530059196 +86-18530059196
sale1@alfachem.cn China 11435 58
Hefei TNJ Chemical Industry Co.,Ltd.
0551-65418671
sales@tnjchem.com CHINA 34618 58
ShenZhen Ipure Biology import and export company co.,ltd
+86-18071025641 +86-18071025641
eric@ipurechemical.com China 12274 58
AFINE CHEMICALS LIMITED
0571-85134551
info@afinechem.com CHINA 15558 58

74-87-3(Chlormethan)Verwandte Suche:


  • metyluchlorek
  • metyluchlorek(polish)
  • R 40
  • R-40
  • R40(refrigerant)
  • Rcra waste number U045
  • rcrawastenumberu045
  • Refrigerant R40
  • METHYL CHLORIDE
  • chloromethane cyl. with 7 L (net ~5 kg)
  • CHLOROMETHANE, ANHYDROUS, 1.0M SOLUTION IN TERT-BUTYL METHYL ETHER
  • CHLOROMETHANE CYL. WITH 14.3 L (NET ~11.5 KG)
  • CHLOROMETHANE, 99.5+%
  • CHLOROMETHANE, ANHYDROUS, 1.0M SOLUTION IN DIETHYL ETHER
  • CHLOROMETHANE CYL. WITH 2 L (NET ~1.6 KG )
  • chloromethane solution
  • Methyl chloride (I, T)
  • Methyl Chloride (ca. 5.7% in Tetrahydrofuran, ca. 1mol/L)
  • Chlor-methan
  • chloro-methan
  • chloromethane(methylchloride)
  • chloromethane-d3(gas)
  • Chlorure de methyle
  • chloruredemethyle
  • chloruredemethyle(french)
  • Clorometano
  • Cloruro di metile
  • clorurodimetile
  • Freon 40
  • (mono)chloromethane
  • Artic
  • Chloor-methaan
  • freon40
  • HCC40
  • KαltemittelR40
  • Methane, chloro-
  • methane,chloro
  • methylchloride(chloromethane)
  • Metylu chlorek
  • oromethane soL
  • Chloromethane, 1M in diethyl ether
  • ChloromethaneSolution,5000mg/L,2x5ml
  • ChloromethaneSolution,100mg/L,1ml
  • ChloromethaneSolution,5000mg/L,1ml
  • ChloromethaneSolution,2000mg/L,1ml
  • Norflurane EP Impurity W
  • R40
  • CHLOROMETHANE
  • CHLOROMETHANE, 1X1ML, MEOH, 200UG/ML
  • Chlormethan
  • CH3Cl
  • Methane,chloro-
  • Methylchlorid
  • Monochloromethane
  • 74-87-3
  • 74-87-8
  • 74873
  • Synthetic Reagents
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