シリカヒューム

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 注意喚起語

  Warning

• 危険有害性情報

  H373：長期にわたる、または反復暴露により臓器の障 害のおそれ

• 注意書き

  P260：粉じん/煙/ガス/ミスト/蒸気/スプレーを吸入しないこ と。

  P314：気分が悪い時は、医師の診断/手当てを受けること。

  P501：内容物/容器を．．．に廃棄すること。

シリカヒューム 化学特性,用途語,生産方法

• 化学的特性

  Amorphous silica, the noncrystalline form of SiO2, is a transparent to gray, odorless, amorphous powder

• 使用

  None; produced only as a by-product.

• 主な応用

  Silica-fume forms most of the dust and other particulates in the off-gases produced during the electrothermal production of ferrosilicon (Fe-Si) or silicon (Si). The dust is collected in baghouses and bagged without further treatment. Due to its high surface area, microsilica reacts readily with hydrated calcium silicates forming strong bonds, and for that reason it is sometimes called reactive silica. Therefore the addition of microsilica to hydraulic cements improves their mechanical strength, reduces their permeability, and enhances their workability, cohesiveness, and flowing properties and hence is extensively used as an additive to cements and monolithic refractories. 

• 健康ハザード

  Amorphous silica fume exposure is associated with recurrent fever, similar to metal fume fever, and nonprogressive pulmonary changes.More recently, the importance of silica fume particle size on toxicity has been noted.8 Specifically, particles of the ultrafine size range may be expected to have higher toxicity compared with particles of larger size.

• 安全性プロファイル

  An inhalation hazard. Much less toxic than crystalline forms. Does not cause silicosis. See also other silica entries

• 職業ばく露

  Amorphous fumed silica is used as a mineral, natural or synthetic fiber. A potential danger to those involved in the production and handling of fumed silica for paint pigments or catalysts. Diatomaceous earth is used in clarifying liquids, in manufacture of fire brick and heat insulators; used as a filtering agent; as a filler in construction materials; pesticides, paints, and varnishes. A potential danger to those involved in mining of diatomaceous earth or fabrication of products there from.

• 不和合性

  Silica, amorphous is a noncombustible solid. Generally unreactive chemically. Incompatible with fluorine, oxygen difluoride, chlorine trifluoride. Soluble in molten alkalis and reacts with most metallic oxides at high temperature.

• 廃棄物の処理

  Sanitary landfill.

シリカヒューム 生産企業

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69012-64-2, シリカヒューム キーワード