Kohlenstofftetrabromid

Bezeichnung:Kohlenstofftetrabromid

CAS-Nr558-13-4

Englisch Name:Carbon tetrabromide

CBNumberCB7853830

SummenformelCBr4

Molgewicht331.63

MOL-Datei558-13-4.mol

Synonyma

Kohlenstofftetrabromid

Tetrabrommethan

Tetrabromkohlenstoff

Kohlenstofftetrabromid physikalisch-chemischer Eigenschaften

Schmelzpunkt	88-90 °C(lit.)
Siedepunkt	190 °C(lit.)
Dichte	3,42 g/cm³
Dampfdruck	40 mm Hg ( 96 °C)
Brechungsindex	1.5942
Flammpunkt	190°C
storage temp.	Store below +30°C.
Löslichkeit	soluble in Chloroform
Aggregatzustand	Crystalline Solid
Farbe	White to off-white
Wasserlöslichkeit	insoluble
BRN	1732799
Dielectric constant	7（22.0℃）
Expositionsgrenzwerte	ACGIH: TWA 0.1 ppm; STEL 0.3 ppm NIOSH: TWA 0.1 ppm(1.4 mg/m3); STEL 0.3 ppm(4 mg/m3)
CAS Datenbank	558-13-4(CAS DataBase Reference)
NIST chemische Informationen	Carbon tetrabromide(558-13-4)
EPA chemische Informationen	Carbon tetrabromide (558-13-4)

Sicherheit

Kennzeichnung gefährlicher	Xi,T+,N,Xn
R-Sätze:	37/38-41-36-26-52/53-22
S-Sätze:	26-36-45-27-24-61
RIDADR	UN 2516 6.1/PG 3
WGK Germany	3
RTECS-Nr.	FG4725000
TSCA	Yes
HazardClass	6.1
PackingGroup	III
HS Code	29033036
Giftige Stoffe Daten	558-13-4(Hazardous Substances Data)

Gefahreninformationscode (GHS)

Carbon tetrabromide Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD
FARBLOSE KRISTALLE.
CHEMISCHE GEFAHREN
Zersetzung beim Erhitzen unter Bildung giftiger und ätzender Rauche. Reagiert mit Alkalimetallen unter Explosionsgefahr.
ARBEITSPLATZGRENZWERTE
TLV: 0,1 ppm (als TWA); 0,3 ppm (als STEL) (ACGIH 2005).
MAK nicht festgelegt (DFG 2005).
AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation und durch Verschlucken.
INHALATIONSGEFAHREN
Beim Verdampfen bei 20°C tritt langsam eine gesundheitsschädliche Kontamination der Luft ein.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION:
Tränenreizend. Die Substanz verätzt die Augen und reizt die Haut und die Atemwege. Möglich sind Auswirkungen auf Lunge, Leber und Nieren. Exposition gegenüber hohen Konzentrationen kann zu Bewusstlosigkeit führen.
WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION
Möglich sind Auswirkungen auf die Leber.
LECKAGE
Verschüttetes Material in Behältern sammeln; falls erforderlich durch Anfeuchten Staubentwicklung verhindern. Reste sorgfältig sammeln. An sicheren Ort bringen. Persönliche Schutzausrüstung: Atemschutzgerät, P2-Filter für schädliche Partikel.
R-Sätze Betriebsanweisung:
R37/38:Reizt die Atmungsorgane und die Haut.
R41:Gefahr ernster Augenschäden.
R36:Reizt die Augen.
R26:Sehr giftig beim Einatmen.
R52/53:Schädlich für Wasserorganismen, kann in Gewässern längerfristig schädliche Wirkungen haben.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
S27:Beschmutzte, getränkte Kleidung sofort ausziehen.
S24:Berührung mit der Haut vermeiden.
S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.
Beschreibung
Carbon tetrabromide is considered a highly toxic chemical, may be fatal if inhaled, swallowed, or absorbed through skin. It is metabolized in vitro to produce carbon monoxide but the in vivo significance has not been established. Under anaerobic reducing conditions it forms complexes with ferrous cytochrome P450. Carbon monoxide is detected as a metabolic product of the interaction. Carbon tetrabromide’s production and use in organic syntheses may result in its release to the environment through various waste streams. Carbon tetrabromide has been isolated from red algae, Asparagopsis toxiformis, found in the ocean near Hawaii. It was detected in water from treated chlorinated seawater used for drinking at oil platforms. Occupational exposure to carbon tetrabromide may occur through inhalation and dermal contact with this compound at workplaces where it is produced or used. The general population may be exposed to carbon tetrabromide via ingestion of drinking water. Acute exposures to high concentrations may cause upper respiratory tract irritation and injury to lungs, liver (hepatotoxicity) and kidneys (nephrotoxicity). Chronic exposure effects at very low levels will be almost entirely limited to liver injury. It is a potent lachrymator even at low exposure concentrations. Although carbon tetrabromide may release bromine ions during metabolism, clinical bromism is not expected to occur.
Chemische Eigenschaften
Crystalline colorless
Chemische Eigenschaften
Carbon tetrabromide, is a colorless powder, white crystalline solid, or yellow-brown crystals. Slight odor
Verwenden
Used to a limited extent as an intermediate in organic synthesis
Verwenden
Organic synthesis.
Verwenden
Carbon tetrabromide is used to a limited extent as a chemical intermediate. It has been isolated from red algae, Asparagopsis toxiformis, found in the ocean near Hawaii.
Definition
ChEBI: A one-carbon compound substituted by 4 bromo groups.
Allgemeine Beschreibung
A colorless crystalline solid. Much more dense than water and insoluble in water. Toxic by ingestion. Vapors are narcotic in high concentration. Used to make other chemicals.
Air & Water Reaktionen
Insoluble in water.
Reaktivität anzeigen
Carbon tetrabromide is incompatible with the following: Strong oxidizers, hexacyclohexyldilead, lithium .
Hazard
A poison; narcotic in high concentration. Liver damage, eye, skin, and upper respiratory tract irritant.
Health Hazard
Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
Brandgefahr
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Containers may explode when heated. Runoff may pollute waterways.
Sicherheitsprofil
Poison by subcutaneous and intravenous routes. Narcotic in high concentration. Mixture with Li particles is an impact-sensitive explosive. Explodes on contact with hexacyclohexylddead. When heated to decomposition it emits toxic fumes of Br-. See also CHLORINATED HYDROCARBONS, ALIPHATIC.
mögliche Exposition
CBr4 is used in organic synthesis.
Erste Hilfe
If this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for at least15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts theskin, remove contaminated clothing and wash immediatelywith soap and water. Seek medical attention immediately. Ifthis chemical has been inhaled, remove from exposure,begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR ifheart action has stopped. Transfer promptly to a medicalfacility. When this chemical has been swallowed, get medical attention. Give large quantities of water and inducevomiting. Do not make an unconscious person vomit.Medical observation is recommended for 24-48 h afterbreathing overexposure, as pulmonary edema may bedelayed. As first aid for pulmonary edema, a doctor orauthorized paramedic may consider administering a corticosteroid spray.
Environmental Fate
Carbon tetrabromide inhibits protein synthesis and causes lipid peroxidation, both of which may be involved in cell injury or death mediated by free radicals.
Lager
Color Code—Green: General storage may be used.Prior to working with carbon tetrabromide you should betrained on its proper handling and storage. Store in tightlyclosed containers in a cool, well-ventilated area away fromoxidizers and other incompatible materials listed above.
Versand/Shipping
UN2516 Carbon tetrabromide, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.
läuterung methode
Reactive bromide is removed from CBr4 by refluxing with dilute aqueous Na2CO3, then steam distilling, crystallising from EtOH, and drying in the dark under vacuum. [Sharpe & Walker J Chem Soc 157 1962.] It can be sublimed at 70o and low pressure. [Beilstein 1 IV 85.]
Toxicity evaluation
Carbon tetrabromide is a colorless nonflammable solid at room temperature. It is insoluble in water, but soluble in several organic solvents such as alcohol, ether, and chloroform. Its specific gravity is 3.42, melting point is 90°C, boiling point is 189°C, and vapor pressure is 0.72 torr at 25°C. Production and use of carbon tetrabromide may result in its release in the environment through various hazardous waste streams. Carbon tetrabromide is expected to have very high mobility in soil and volatilizes slowly from dry soil surface. Its biodegradation is expected to be slow and to exist solely as a vapor in the ambient atmosphere. It is not expected to adsorb to suspended solids and sediment in the water column. Its potential for bioconcentration in aquatic organisms is moderate.
Inkompatibilitäten
Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides, lithium and hexacyclohexyldiilead, since violent reactions may occur.
Waste disposal
Purify by distillation and return to suppliers.

Carbon tetrabromide Upstream-Materialien And Downstream Produkte

Kohlenstofftetrabromid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

558-13-4, Carbon tetrabromide Verwandte Suche:

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