MERCK 800653.0050 Selenium Dioxide (Sublimed) For Synthesis CAS No.7446-08-4
| Description |
|---|
| Catalogue Number | 800653 |
| Synonyms | Selenious anhydride, Selenium(IV) oxide |
| Product Information |
|---|
| CAS number | 7446-08-4 |
| EC index number | 034-002-00-8 |
| EC number | 231-194-7 |
| Hill Formula | O₂Se |
| Chemical formula | SeO₂ |
| Molar Mass | 110.96 g/mol |
| HS Code | 2811 29 90 |
| Quality Level | MQ200 |
| Physicochemical Information |
|---|
| Density | 3.950 g/cm3 |
| Melting Point | 340 °C |
| pH value | 2 (10 g/l, H₂O, 20 °C) |
| Vapor pressure | 1 hPa (157 °C) |
| Solubility | 1353 g/l |
| Toxicological Information |
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| LD 50 oral | LD50 Rat 68.1 mg/kg |
| Safety Information according to GHS |
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| Hazard Pictogram(s) | |
| Hazard Statement(s) | H301 + H331: Toxic if swallowed or if inhaled.H373: May cause damage to organs through prolonged or repeated exposure.H410: Very toxic to aquatic life with long lasting effects. |
| Precautionary Statement(s) | P260: Do not breathe dust.P264: Wash skin thoroughly after handling.P273: Avoid release to the environment.P301 + P310: IF SWALLOWED: Immediately call a POISON CENTER/doctor.P304 + P340 + P311: IF INHALED: Remove person to fresh air and keep comfortable for breathing. Call a POISON CENTER/doctor.P314: Get medical advice/ attention if you feel unwell. |
| Signal Word | Danger |
| RTECS | VS8575000 |
| Storage class | 6.1D Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects |
| WGK | WGK 2 obviously hazardous to water |
| Disposal | 17Inorganic 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. |
| Safety Information |
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| Categories of danger | toxic, dangerous for the environment |
| Storage and Shipping Information |
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| Storage | Store below +30°C. |
| Transport Information |
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| Declaration (railroad and road) ADR, RID | UN 3283, 6.1, III |
| Declaration (transport by air) IATA-DGR | UN 3283, 6.1, III |
| Declaration (transport by sea) IMDG-Code | UN 3283, 6.1, III |
| Specifications |
|---|
| Assay (iodometric) | ≥ 98.0 % |
| Global Trade Item Number |
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| Catalogue Number | GTIN |
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| 8006530005 | 04027269276256 |
| 8006530050 | 04022536361413 |
| 8006530250 | 04022536361420 |
| 8006531000 | 04022536361437 |
