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■ SeO2
SeO2 for white or yellow or monoclinic crystal of the crystallization of the Quartet, hygroscopicity and irritation sour
Relative density of 3.950. Melting point of 315 to 317 ℃. In the 340 to 350 ℃ sublimation. Soluble in water, ethanol, acetone, acetic acid and benzene. Easily reduced to selenium.
Uses: iron and steel, and other materials used in the black and the stain used for electrolytic manganese additives, and beverages and additives with trace elements, but also as oxidant, catalysts, and other chemical reagents.
Packaging: drums, plastic bags lined barrel net weight of 25 kg.
Standard: Ministerial standards HGB 3259-60
Specifications:
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Name indicators |
That index value |
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Content (SeO2),% |
≥98.0 |
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Water insoluble，% |
≤0.20 |
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Copper (Cu),% |
≤0.002 |
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Nickel (Ni),% |
≤0.002 |
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Cobalt (Co),% |
≤0.001 |
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Sulfur (S),% |
≤0.03 |
▼ of dictionary of chemical products (Details)
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Product Nam: |
SeO2 |
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English name : |
SeO2;Selenous acid anhydride |
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Alias products |
Ya Se anhydride
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Molecularformula |
SeO2 |
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Use products |
Used as the oxidant, catalysts, chemical reagents, etc.
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CAS No. |
7446-08-4 |
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Toxicity protection
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And the toxicity of arsenic trioxide similar. Acute poisoning, upper respiratory tract and eyes appear to stimulate mucosal symptoms, cough, rhinitis, nasal等症intense burning sensation, but also induce systemic weakness, headache, dizziness, nausea, vomiting, exhaled gas and skin garlic flavor, loss of consciousness, collapse. Chronic poisoning enamel will change, with yellow skin, and chronic inflammation Festival, rash, nail lesions, anemia, gastrointestinal disorders, neurological disorders such as Alzheimer's even. Skin or mucous membrane contact with the goods in pain, numbness, or cause burns. Patients should be removed from poisoning occurred poisoning location, change clothes, quiet, warm. Loss of consciousness and collapse, it will be at the level of patients with head lowered, injecting drugs such as norepinephrine, rushed to the hospital for emergency treatment. The maximum allowable concentration in the air of 0.1 mg/m3. The use of protective equipment in operation. Pay attention to frequently check the concentration of selenium in the air. Regular physical check ups. Rich supply of dietary protein and amino acids.
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Toxicity protection
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With bottles packaging, net weight of 0.5 kg per bottle. Poisonous chemical is inorganic. Adversity regulatory code: 81015. Stored in a ventilated, dry coffers. Attention to the moisture-resistant packaging should be sealed. Packaging to prevent breakage. !
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Physicochemical Properties |
White or yellow or monoclinic crystal of the crystallization of the Quartet, hygroscopicity and irritation sour. Relative density of 3.950. Melting point of 315 to 317 ℃. In the 340 to 350 ℃ sublimation. Soluble in water, ethanol, acetone, acetic acid and benzene. Easily reduced to selenium. Toxic!
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Quality Standards
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Ministerial standards
HGB 3259-60 |
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Molecular Weight
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110.96 | |
