800653
Selenium dioxide
(sublimed) for synthesis
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台灣默克股份有限公司
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台灣
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E-mail: eShop.MTAW@merckgroup.com
03 June 2012
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| Product information | |||
|---|---|---|---|
| Synonyms | Selenious anhydride, Selenium(IV) oxide | ||
| Hill Formula | O2Se | ||
| Chemical formula | SeO2 | ||
| HS Code | 2811 29 90 | ||
| EC number | 231-194-7 | ||
| Molar mass | 110.96 g/mol | ||
| EC index number | 034-002-00-8 | ||
| CAS number | 7446-08-4 | ||
| Chemical and physical data | |||
|---|---|---|---|
| Solubility | 384 g/l (14 °C) | ||
| Molar mass | 110.96 g/mol | ||
| Bulk density | 1500 kg/m3 | ||
| pH value | 2 (10 g/l, H2O, 20 °C) | ||
| Vapor pressure | 16 hPa (70 °C) | ||
| Safety information according to GHS | |||
|---|---|---|---|
| Hazard Statement(s) |
H331: Toxic if inhaled. H301: Toxic if swallowed. H373: May cause damage to organs through prolonged or repeated exposure. H410: Very toxic to aquatic life with long lasting effects. |
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| Precautionary Statement(s) |
P273: Avoid release to the environment. P304 + P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing. P314: Get medical advice/ attention if you feel unwell. |
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| Signal Word | Danger | ||
| Hazard Pictogram(s) |
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| RTECS | VS8575000 | ||
| Storage class | 6.1B Non combustible substances, toxic | ||
| WGK | WGK 2 water endangering | ||
| Disposal |
17 Inorganic selenium compounds are toxic and must be handled with caution. Container E. Elemental selenium can be recovered by first oxidizing the salts in aqueous solution with concentrated Nitric acid (Cat.No. 100443). The addition of Sodium hydrogen sulfite solution (Item No. 806356) then causes elemental selenium to precipitate out. Aqueous phase: Container D. |
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| Safety information | |||
|---|---|---|---|
| R Phrase |
R 23/25-33-50/53 Toxic by inhalation and if swallowed.Danger of cumulative effects.Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
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| S Phrase |
S 20/21-28-45-60-61 When using do not eat, drink or smoke.After contact with skin, wash immediately with plenty of soap and water.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).This material and its container must be disposed of as hazardous waste.Avoid release to the environment. Refer to special instructions/ Safety data sheets. |
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| Categories of danger | toxic, dangerous for the environment | ||
| Hazard Symbol |
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| Transport information | |||
|---|---|---|---|
| Declaration (railroad and road) ADR, RID | UN 3283 Selenverbindung, fest, n.a.g.(SELENDIOXID), 6.1, II | ||
| Declaration (transport by sea) IMDG-Code | UN 3283 SELENIUM COMPOUND, SOLID, N.O.S.(SELENIUM DIOXIDE), 6.1, II | ||
| Declaration (transport by air) IATA-DGR | UN 3283 SELENIUM COMPOUND, SOLID, N.O.S.(SELENIUM DIOXIDE), 6.1, II | ||
| Toxicological data | |||
|---|---|---|---|
| LD 50 oral | LD50 rat 68.1 mg/kg | ||
