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Tribromotrimethyldialuminum

Tribromotrimethyldialuminum structure

Tribromotrimethyldialuminum 

structure
  • CAS No:

    12263-85-3

  • Formula:

    C3H9Al2Br3

  • Chemical Name:

    Tribromotrimethyldialuminum

  • Synonyms:

    Aluminum,tribromotrimethyldi-;Tribromotrimethyldialuminum;Methylaluminum sesquibromide

Tribromotrimethyldialuminum Basic Attributes

338.78 g/mol

337.78647 g/mol

235-532-4

3052

DTXSID8065294

Cloudy yellow liquid @ 25 °C

Characteristics

0 Ų

1.514 g/cm3 @ Temp: 25 °C

Freezing point: -4 °C

166 °C

Keep out of contact with air and moisture|Extremely reactive with air, moisture and compounds containing active hydrogen and therefore must be kept under a blanket of inert gas. /Aluminum alkyls/|In general, materials ... toxic as stored or which can decompose into toxic components ... Should be stored in cool ... ventilated place, out of ... sun, away from ... fire hazard ... be periodically inspected and monitored. Incompatible materials should be isolated ...|All possibility of contact with water must be avoided. Solution containing not more than 20% of these compounds in non-reactive solvents, however, can be handled without risk of spontaneous ignition. /Aluminum alkyls/|For more Storage Conditions (Complete) data for METHYL ALUMINUM SESQUIBROMIDE (6 total), please visit the HSDB record page.

Ignites spontaneously in air; reacts violently in water.|Strongly associated forming dimers; held together by bridging halogen bonds; halogen aluminum bonds cleaved by water and alcohol /Aluminum alkyls/

Safety Information

Low melting solids or colorless, volatile liquids. /Alkylaluminum halides/|Less sensitive than trialkylaminums to oxidation upon exposure to air. /Alkylaluminum halides/

Aluminum compounds are treated under anhydrous conditions to prevent violent reactions, recover solvent, and form Al compounds suitable for landfill by reaction with anhydrous hydrolysis agent, eg calcium hydroxide. /Aluminum compounds/|SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational exposure or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air quality; potential migration in soil or water; effects on animal, aquatic, and plant life; and conformance with environmental and public health regulations.

Reacts violently with water|Extremely reactive with air, moisture, and compounds containing active hydrogen... /Alkyl aluminum compounds/|Reacts violently with a broad range of materials including air & water. /Aluminum alkyls/

Flammable - 4th degree, Reactive - 3rd degree

Wear appropriate personal protective clothing to prevent skin contact. /Aluminum (soluble salts and alkyls, as Al/|Wear appropriate eye protection to prevent eye contact. /Aluminum (soluble salts and alkyls, as Al)/|Protective clothing and a high standard of training in the necessary precautionary measures are essential for the handling of the materials. /Aluminum alkyls/

Ignites spontaneously in air.|Certain polymerization catalysts, such as aluminum alkyls, react & burn violently on contact with water. /Aluminum alkyls/|Aluminum alkyls are organic aluminum compounds that are highly reactive and dangerous because of spontaneous burning in air. /Aluminum alkyls/|Prophoric material in flammable solvent. Vapors are heavier than air & may travel to a source of ignition & flash back. /Aluminum alkyls/

...Violently explosive when they come into contact with water. /Aluminum alkyls/

Stop flow of liquid before extinguishing fire. Use dry chemical or carbon dioxide. DO NOT use water as straight stream directly on spilled material. Water fog can be used to control fire. DO NOT use halogenated extinguishing agents on spilled material. Violent reaction may result. Use water spray to keep fire-exposed containers cool. Fight fire from protected location or maximum possible distance. /Aluminum Alkyls/

SRP: The scientific literature for the use of contact lenses in industry is conflicting. The benefit or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place.|Work clothing that becomes wet or significantly contaminated should be removed and replaced. /Aluminum (soluble salts and alkyls, as Al)/|Workers whose clothing may have become contaminated should change into uncontaminated clothing before leaving the work premises. /Aluminum (soluble salts and alkyls, as Al)/|The worker should immediately wash the skin when it becomes contaminated. /Aluminum (soluble salts and alkyls, as Al)/|SRP: Contaminated protective clothing should be segregated in such a manner so that there is no direct personal contact by personnel who handle, dispose, or clean the clothing. Quality assurance to ascertain the completeness of the cleaning procedures should be implemented before the decontaminated protective clothing is returned for reuse by the workers. Contaminated clothing should not be taken home at end of shift, but should remain at employee's place of work for cleaning.

If ... THERE IS NO FIRE, go directly to the Table of Initial Isolation and Protective Action Distances /(see table below)/ ... to obtain initial isolation and protective action distances. IF THERE IS A FIRE, or IF A FIRE IS INVOLVED, go directly to the appropriate guide /(see guide(s) below)/ and use the evacuation information shown under PUBLIC SAFETY. /Aluminum alkyl halides; Aluminum alkyl halides, liquid; Aluminum alkyl halides, solid/|Table of Water-Reactive Materials Which Produce Toxic Gases /Aluminum alkyl halides; Aluminum alkyl halides, liquid; Aluminum alkyl halides, solid/|/GUIDE 135: SUBSTANCES - SPONTANEOUSLY COMBUSTIBLE/ Fire or Explosion: Flammable/combustible material. May ignite on contact with moist air or moisture. May burn rapidly with flare-burning effect. Some react vigorously or explosively on contact with water. Some may decompose explosively when heated or involved in a fire. May re-ignite after fire is extinguished. Runoff may create fire or explosion hazard. Containers may explode when heated. /Aluminum alkyl halides; Aluminum alkyl halides, liquid; Aluminum alkyl halides, solid/|/GUIDE 135: SUBSTANCES - SPONTANEOUSLY COMBUSTIBLE/ Health: Fire will produce irritating, corrosive and/or toxic gases. Inhalation of decomposition products may cause severe injury or death. Contact with substance may cause severe burns to skin and eyes. Runoff from fire control may cause pollution. /Aluminum alkyl halides; Aluminum alkyl halides, liquid; Aluminum alkyl halides, solid/|For more DOT Emergency Guidelines (Complete) data for METHYL ALUMINUM SESQUIBROMIDE (10 total), please visit the HSDB record page.

The International Maritime Dangerous Goods Code lays down basic principles for transporting hazardous chemicals. Detailed recommendations for individual substances and a number of recommendations for good practice are included in the classes dealing with such substances. A general index of technical names has also been compiled. This index should always be consulted when attempting to locate the appropriate procedures to be used when shipping any substance or article.|The International Air Transport Association (IATA) Dangerous Goods Regulations are published by the IATA Dangerous Goods Board pursuant to IATA Resolutions 618 and 619 and constitute a manual of industry carrier regulations to be followed by all IATA Member airlines when transporting hazardous materials.|No person may /transport,/ offer or accept a hazardous material for transportation in commerce unless that person is registered in conformance ... and the hazardous material is properly classed, described, packaged, marked, labeled, and in condition for shipment as required or authorized by ... /the hazardous materials regulations (49 CFR 171-177)./

Irritation of the eyes has been noted in patients who have been exposed /to aluminum alkyls/. /Aluminum alkyls/|May cause minor irritation to lungs or eyes. /Aluminum (dust or powder)/

Vacated 1989 OSHA PEL TWA 2 mg/cu m is still enforced in some states. /Aluminum soluble salts and alkyls, as Al/

Recommended Exposure Limit: 10-Hr Time-Weighted Avg: 10 mg/cu m (total). /Aluminum/|Recommended Exposure Limit: 10 Hr Time-Weighted Avg: 5 mg/cu m (resp). /Aluminum/|Recommended Exposure Limit: 10 Hr Time-Weighted Avg: 2 mg/cu m. /Aluminum (soluble salts and alkyls, as Al)/|Recommended Exposure Limit: 10 Hr Time-Weighted Avg: 5 mg/cu m. /Aluminum (pyro powders and welding fumes, as Al)/

| 3 - Materials that, under emergency conditions, can cause serious or permanent injury.| 4 - Materials that rapidly or completely vaporize at atmospheric pressure and normal ambient temperature or that are readily dispersed in air and burn readily.| 3 - Materials that in themselves are capable of detonation or explosive decomposition or explosive reaction but that require a strong initiating source or must be heated under confinement before initiation.

D003; A waste containing Methyl aluminum sesquibromide may (or may not) be characterized a hazardous waste following testing for the reactivity characteristics as prescribed by the Resource Conservation and Recovery Act (RCRA) regulations.

D003; A solid waste containing Methyl aluminum sesquibromide may become characterized as a hazardous waste when subjected to testing for reactivity as stipulated in 40 CFR 261.23, and if so characterized, must be managed as a hazardous waste.

Drug Information

/SIGNS AND SYMPTOMS/ Corrosive. Causes severe eye and skin burns. Irritating to skin, eyes, and respiratory system. May be harmful if absorbed through skin or inhaled. "Metal fume fever" may result from inhalation of fumes /from organoaluminum compounds/. /SRP: While possible, metal fume fever is not highly probable./ /Organoaluminum compounds/|/OTHER TOXICITY INFORMATION/ Vapors of the pyrophoric alkyls (butyls and below) are nontoxic because they are completely consumed, but inhalation of the metallic oxide smoke (Al2O3) at 15 mg/cu m or greater can result in symptoms such as "metal fume fever." /Aluminum alkyls/

Tribromotrimethyldialuminum Use and Manufacturing

Methods of Manufacturing

The alkylaluminum halides are prepared from alkyl halides and aluminum, or by halogenation of trialkylaluminums. /Aluminum alkyls/

Aluminum, tribromotrimethyldi-: INACTIVE

Fire Hazards -> Flammable - 4th degree, Reactive - 3rd degree

Computed Properties

Molecular Weight:338.78
Exact Mass:337.78647
Monoisotopic Mass:335.78851
Heavy Atom Count:8
Complexity:27
Covalently-Bonded Unit Count:2
Compound Is Canonicalized:Yes

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