| Identification | More | 【Name】
Selenium | 【CAS】
7782-49-2 | 【EINECS(EC#)】
231-194-7 | 【Molecular Formula】
Se2 | 【MDL Number】
MFCD00134090 | 【Molecular Weight】
157.92 | 【MOL File】
7782-49-2.mol |
| Safety Data | Back Directory | 【Hazard Codes 】
T | 【Risk Statements 】
R36/38:Irritating to eyes and skin .
R53:May cause long-term adverse effects in the aquatic environment.
R33:Danger of cumulative effects.
R23/25:Toxic by inhalation and if swallowed . | 【Safety Statements 】
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S28:After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) .
S20/21:When using, do not eat, drink or smoke . | 【RIDADR 】
UN 3440 6.1/PG 3
| 【WGK Germany 】
2
| 【RTECS 】
VS7700000
| 【PackingGroup 】
III | 【Hazardous Substances Data】
7782-49-2(Hazardous Substances Data) |
| Hazard Information | Back Directory | 【General Description】
Selenium is a reddish colored powder that may become black upon exposure to air. SELENIUM POWDER(7782-49-2) is toxic by ingestion. SELENIUM POWDER(7782-49-2) is used to manufacture electronic components and rubber. | 【Reactivity Profile】
SELENIUM, silicon, or sulfur ignites in fluorine gas at ordinary temperatures [Mellor 2:11-13 1946-47]. A mixture of barium carbide and selenium heated to 150° C becomes incandescence [Mellor 5:862 1946-47]. Calcium carbide and selenium vapor react with incandescence [Mellor 5:862 1946-47]. A moist mixture of selenium and chlorates, except the alkali chlorates, becomes incandescent. Selenium reacts violently with chromium trioxide [Mellor 11:233 1946-47]. Reaction of selenium and silver bromate (also potassium bromate) is violently explosive [Mellor 2, Supp1:763 1956]. Freshly reduced selenium reacts vigorously with nitric acid. Trace amounts of organic matter probably influenced the reaction [J. Chem. Soc. 1938 p.391]. The reaction between zinc and selenium or tellurium is accompanied by incandescence [Mellor 4:476-480 1946-47]. | 【Air & Water Reactions】
Insoluble in water. | 【Health Hazard】
Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Contact with molten substance may cause severe burns to skin and eyes. 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. | 【Fire Hazard】
Combustible material: may burn but does not ignite readily. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form. |
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