Osmium, powder

780421158998

7440-04-2

nsc 607772 | osmium, 99.9% | osmium metal | osmium powder | nsc 607770 | os | metallic osmium | osmium standard | osmiumpowder(99.8%) | nsc 607771 | osmiumpowdernmesh | osmium | metallicosmium

Os

190.23

22,48 g/cm³

5027 °C(lit.)

3045 °C(lit.)

Insoluble in water, acids , and aqua regia.

Tasmania, South Africa, the former U.S.S.R., Canada.

Poison by intravenous route. An irritant to eyes and mucous membranes. The principal effects of exposure are ocular disturbances and an asthmatic condition caused by inhalation. Furthermore, it causes dermatitis and ulceration of the skin upon contact. When osmium is heated, it gives off a pungent, poisonous fume of osmium tetroxide. One case of osmium poisoning reported in the literature resulted from the inhalation of osmium, which gave rise to a capillary bronchitis and dermatitis. The tetroxide vapor has a pronounced and nauseating odor that should be taken as a warning of a possibly toxic concentration in the atmosphere, and personnel should immediately move to an area of fresh air. The metal itself is not highly toxic. Flammable in the form of dust when exposed to heat or flame. Slight explosion hazard in the form of dust when exposed to heat or flame. Violent reaction or ignition with chlorine trichloride or oxygen difluoride. Ignites when heated to 100°C with fluorine. Incandescent reaction in phosphorus vapor. When heated to decomposition it emits toxic fumes of OsO4. See also OSMIUM TETROXIDE.

4.1

危险符号:

歐洲標準危險象形圖，代碼和定義

11-37/38-41-36/38 (R)

-

UN 3089 4.1 / PG 2

RN1100000