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Merck - 8006530250 - Selenium Dioxide (Sublimed) For Synthesis, 250 g

  • MFR SKU: 8006530250
  • ITEM #: 7160341
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ITEM #: 7160341
CAS No.: 8/4/7446
pH: 2 (10 g/l, H2O, 20°C)
Solubility: 384 g/l (14°C)
Molar Mass: 110.96 g/mol
Bulk Density: 1500 kg/m3
Vapor Pressure: 16 hPa (70°C)
pH Range : 2 (10 g/l, H2O, 20°C)
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Merck - 8006530250 - Selenium Dioxide (Sublimed) For Synthesis, 250 g

  • Item #: 7160341
  • MFR SKU: 8006530250
  • Catalogue Number 800653
  • Synonyms Selenious anhydride, Selenium(IV) oxide
  • CAS number 7446-08-4
  • EC index number 034-002-00-8
  • EC number 231-194-7
  • Hill Formula OSe
  • Chemical formula SeO
  • Molar Mass 110.96 g/mol
  • HS Code 2811 29 90
  • Quality Level MQ200
  • Density 3.950 g/cm3
  • Melting Point 340 ° C
  • pH value 2 (10 g/l, HO, 20 ° C)
  • Vapor pressure 1 hPa (157 ° C)
  • Solubility 1353 g/l
  • LD 50 oral LD50 Rat 68.1 mg/kg
  • 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/ fume/ gas/ mist/ vapours/ spray.
  • 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 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 ( . 100443). The addition of Sodium hydrogen sulfite solution (Item No. 806356) then causes elemental selenium to precipitate out. Aqueous phase: Container D.
  • Categories of danger toxic, dangerous for the environment
  • Storage Store below +30° C.
  • 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
  • Assay (iodometric) ≥ 98.0 %

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