Molecular Formula | N3O9Sm |
Molar Mass | 336.37 |
Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. |
UN IDs | 1477 |
Hazard Class | 5.1 |
Packing Group | II |
Toxicity | 实验研究稀土已在我国各个领域得到广泛应用,但有部分研究表明稀土具有神经毒性,高级神经中枢对其毒性较其他器官更敏感。硝酸钐会降低小鼠大脑乙酰胆碱酯酶活力,这证明了长期摄入一定浓度硝酸钐会在行为和生化两方面影响小鼠的学习记忆能力。 |
light yellow triclinic crystal, relative density 2. 375. The melting point was 78-79 °c. Soluble in water and alcohol, moisture in the humid air.
used in three-way catalyst, chemical reagents and other industries.
The double-layer composite plastic bag is used for vacuum packaging, and each bag has a net weight of 1kg, 2kg and 5kg, and is placed in a paper drum (iron drum and plastic drum) with a net weight of 40kg per barrel. Can also be packaged according to user requirements. Contact with organic matter can burn and explosion. Risk code: GB 5.1 class 51524.
properties | samarium nitrate chemical formula Sm(NO3)3 · 6H2O, light yellow crystal. Melting point 78~79 ℃, relative density 2.375. It turns into samarium oxide at 750 ℃. Soluble in water and anhydrous amine, ethanol, acetone and ether and other polar organic solvents. Easy to produce double salt. | |
application | samarium nitrate can be used as an infrared phosphorescence accelerator, and can also be used as a pesticide fungicide in combination with berberine. | |
synthesis | samarium oxide is dissolved in nitric acid, evaporated and crystallized in a concentrated sulfuric acid dryer to obtain samarium nitrate. | |
toxicity | experimental research rare earth has been widely used in various fields in China, but some studies have shown that rare earth has neurotoxicity, and higher nerve centers are more sensitive to its toxicity than other organs. Samarium nitrate can reduce the activity of acetylcholinesterase in the brain of mice, which proves that long-term intake of a certain concentration of samarium nitrate will affect the learning and memory ability of mice in both behavioral and biochemical aspects. | |
category | oxidant | |
toxicity classification | micro toxicity | |
acute toxicity | oral administration-rat LD50: 2160 mg/kg; Abdominal cavity-mouse LD50: 239 mg/kg | |
explosive hazard characteristics | mixed with reducing agent, sulfur, phosphorus, etc. can be exploded by heating, impact, friction | |
flammable hazard characteristics | mixed with organic matter, reducing agent, combustible sulfur, phosphorus; toxic nitrogen oxide smoke generated by combustion | |
storage and transportation characteristics | warehouse ventilation and low temperature drying; light loading and unloading; separate from organic matter, reducing agent, sulfur and phosphorus flammable materials | |
fire extinguishing agent | mist water, sand | |
EPA chemical information | The information is: offered by ofmpub.epa.gov (external link) |