Molecular Formula | O2Se |
Molar Mass | 110.96 |
Density | 4.81g/mLat 25°C(lit.) |
Melting Point | 315°C (subl.)(lit.) |
Boling Point | 684.9°C(lit.) |
Flash Point | 315°C |
Water Solubility | 38.4 g/100 mL (14 ºC) |
Solubility | H2O: soluble |
Vapor Presure | 1 mm Hg ( 157 °C) |
Appearance | powder |
Specific Gravity | 3.95 |
Color | white |
Exposure Limit | ACGIH: TWA 0.2 mg/m3NIOSH: IDLH 1 mg/m3; TWA 0.2 mg/m3 |
Merck | 14,8434 |
PH | 2 (10g/l, H2O, 20℃) |
Storage Condition | Store below +30°C. |
Stability | Stable. Incompatible with organic materials, strong acids, ammonia, nitric acid, halogen acids. Protect from moisture. |
Refractive Index | nD20 <1.76 |
Physical and Chemical Properties | Characteristics of white or light yellow monoclinic or tetragonal crystal, hygroscopic and irritating sour taste. melting point 315~317 ℃ relative density 3.950 solubility: soluble in water, ethanol, acetone, acetic acid and benzene. |
Use | As a special reagent for plant alkaloids, it can also be used for the precipitation of zirconium, hafnium and the preparation of selenium compounds |
Risk Codes | R36/38 - Irritating to eyes and skin. R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R33 - Danger of cumulative effects R23/25 - Toxic by inhalation and if swallowed. R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R20/22 - Harmful by inhalation and if swallowed. |
Safety Description | 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 sheets. S60 - This material and its container must be disposed of as hazardous waste. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S28A - S20/21 - S28 - After contact with skin, wash immediately with plenty of soap-suds. |
UN IDs | UN 3440 6.1/PG 3 |
WGK Germany | 2 |
RTECS | VS8575000 |
FLUKA BRAND F CODES | 3 |
TSCA | Yes |
HS Code | 2811 29 90 |
Hazard Class | 6.1 |
Packing Group | II |
Toxicity | LD50 orally in Rabbit: 68.1 mg/kg |
Raw Materials | Selenium Nitric acid Nitric acid |
Downstream Products | Selenium Disulfide |
white or light yellow monoclinic or tetragonal crystals with hygroscopicity and pungent sour taste. The relative density was 3. 950. The melting point was 315-317 °c. Sublimation at 340-350 °c. Soluble in water, ethanol, acetone, acetic acid and benzene. Easily reduced to selenium. Highly toxic!
It is used as an oxidizing agent of an organic compound, a catalyst, a chemical reagent, and a raw material for producing various inorganic selenium compounds. It is also used in copying machines, rectifiers, and the like.
packaged in glass bottles, each with a net weight of 0.5kg. It is an inorganic drug. Risk code: GB6.1 class 61015. Highly toxic B10 37. Store in a ventilated, dry warehouse. Pay attention to moisture, packaging should be sealed. To prevent breakage of the packaging. Toxicity and protection: similar to the toxicity of arsenic trioxide. Acute poisoning, upper respiratory tract and eye mucosa irritation symptoms, Dry Cough, rhinitis, nasal intense burning pain and other symptoms, but also cause weakness, Head Pain, dizziness, Nausea, Vomit, the exhaled breath and skin have garlic odor, loss of consciousness, collapse. Chronic poisoning will appear enamel changes, skin jaundice, chronic arthritis, rash, nail lesions, anemia, gastrointestinal disorders, neurological disorders and even dementia. Skin or mucous membrane contact with this product, severe pain, numbness, or cause burns. Poisoning patients should be removed from the poisoning site, change clothes, quiet, warm. When the patient has loss of consciousness and collapse, the patient is in the horizontal position, the head is lowered, the injection of norepinephrine and other drugs, and the patient is sent to the hospital for first aid. The maximum allowable concentration in air is 0.1 mg/m3. Use protective equipment during operation. Attention is often checked for the concentration of selenium in the air. Regular physical examination. A diet rich in protein and amino acids is supplied.