Asbestos, brown

Broom corn fiber, 11 298 Broom root fiber, 11 298 Broperamole, 4 359t Bropirimine, 4 360t Brotizolam, 4 360t Brovincamine, 4 360t Brown asbestos, world production in 2000, 3 289t... 

Brown asbestos Categorical name used primarily in reference to amosite. 

SYNS AMORPHOUS CROCIDOLITE ASBESTOS ASBESTOS (ACGIH) BLUE ASBESTOS (DOT) BROWN ASBESTOS (DOT) O CROCIDOLITE ASBESTOS CROCIDOLITE (DOT) FIBROUS CROCIDOUTE ASBESTOS KROKYDOLITH (GERMAN) NCI-C09007... 

Synonyms No data Mysorite, brown asbestos fibrous cummingtonite/ grunerite Serpentine asbestos white asbestos Silicic acid calcium magnesium salt (8 4) No data Ferroantho- phyllite azbolen asbestos Blue asbestos... 

Amosite—A type of asbestos in the amphibole group it is also known as brown asbestos. 

Actinolite Amosite Anthophyllite Asbestos Asbestos, blue, 9 Asbestos, brown Asbestos, white, 9 Blue asbestos Blue asbestos (crocidolite), 9 Brown asbestos (amosite, mysorite), 9 Chrysotile Crocidolite Mysorite Talcum with tremolite and/or actinolite Tremolite White asbestos White asbestos (chrysotile, actinolite, anthophyllite, tremolite), 9... 

White asbestos (12001-29-5) refers to the degree to which the mineral surface achieves complete reflectance over the visible spectrum rather than to the actual colour or hue of the mineral consequently, white describes multiple asbestos types, although it is most commonly applied to actinolite, chrysotile, and sometimes anthophyllite and tremolite. Similarly, while brown asbestos principally refers to amosite, it actually describes the degree to which the mineral deviates from colourlessness toward yellow, tan, or brown. 

Asbestos. Asbestos is a generic name for naturally occurring mineral silicate fibres of the Serpentine and Amphibole series. In the Serpentine series is Chrysotile, commonly kno m as white asbestos. In the amphibole series are Actinolite, Amosite or Mysorite (commonly known as brown asbestos), Anthophyllite, Crocidolite (commonly known as blue asbestos) and Tremolite. All types of asbestos can be hazardous to health, blue and brown asbestos being the more dangerous types. ICAO A2... 

Double-chain silicates, shown in Figure I5.13f, find some SiO units sharing two oxygens while others share three. The repeating unit is Si40if. Five double-chain silicates [tremolite, anthophyllite, actinolite, amosite ( brown asbestos ), crocidolite ( blue asbestos ), all members of the amphibole family of minerals] and the serpentine mineral chrysotile ( white asbestos ) are classified under the generic name asbestos. The molecular-level chain structure of these materials is reflected in... 

Modern experience is that all forms of asbestos are equally hazardous, although for different reasons. Previously, attention was focused on blue asbestos (crocidolite), followed by amosite, or brown asbestos. The latter is often a component of tiles. Chrysotile, white asbestos, not only produces asbestosis following even quite modest exposures, but also cancer of the lung. Analysis determines the fibre type or types, which indicates the requirements for protection although this work will be restricted to HSE licence holders. 

The asbestos minerals are crystalline fibrous silicates, some of which have been exploited commercially, especially as an insulating material. These minerals comprise sheets, or chains of silicate tetrahedra in which oxygen is either bound to two silicon atoms or to one silicon atom, and possesses a negative charge. There are two major groups of asbestos mineral serpentines and amphiboles. White asbestos or chrysotile is a serpentine mineral, whereas the other forms of asbestos, crocidolite (blue asbestos), amosite (brown asbestos), anthophyllite, tremolite, and aetinolite, are amphiboles. Tremolite can also be found as a contaminant in other minerals, such as chrysotile, talc, and vermiculite. 

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