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Selenium dioxide

Cas:
7446-08-4
Molecular Structure:
MDL:
--MFCD00003562
Molecular Formula:
SeO2
Molecular Weight:
110.96
Alias:
亚硒酐,无水亚硒酸 Selenium oxide Selenious anhydride Selenious acid anhydride
Product order:
Name Specifications Packing Price Delivery
Selenium dioxide 99.9% metals basis 5g RMB 71.5 Consulting service
Selenium dioxide 99.9% metals basis 25g RMB 148.5 Consulting service
Selenium dioxide 99.9% metals basis 100g RMB 517 Consulting service
Selenium dioxide 99.9% metals basis 500g RMB 2145 Consulting service
Selenium dioxide 99.99% metals basis 5g RMB 93.5 Consulting service
Selenium dioxide 99.99% metals basis 25g RMB 319 Consulting service
Selenium dioxide 99.99% metals basis 100g RMB 737 Consulting service
Selenium dioxide 99.99% metals basis 500g RMB 2805 Consulting service
Selenium dioxide CP 100g RMB 286 Consulting service
Selenium dioxide 99.999% metals basis 25g RMB 2145 Consulting service
Selenium dioxide 99.999% metals basis 5g RMB 528 Consulting service
Selenium dioxide AR,99% 2.5kg RMB 5390 Consulting service
Selenium dioxide AR,99% 500g RMB 1287 Consulting service
Selenium dioxide AR,99% 100g RMB 319 Consulting service
Character:
白色有光针状结晶性粉未,味酸并有灼烧感。其蒸气显黄绿色,并带辛辣味,对光及热稳定,能溶于水、醇、丙酮和乙酸。易吸收干燥氟化氢、氯化氢、溴化氢和碘化氢生成卤化硒。二氧化硒是一种强氧化剂,可被SO2、H2、NH3、CO、C还原成单质硒。
熔点: 315 °C

   溶解度:38.4 g/100mL 水(14°C),1.11%醋酸(13.9°C)、10.16 %甲醇(11.8°C)、6.67 % 93%的乙醇(14°C),4.35 %丙酮ACETONE (15.3°C)。

Quality Standard:
 
   项目Item                          分析纯      化学纯
                                             (AR)         (CP)
含量Assay,%                              ≥ 99.0       98.0
灼烧残渣(以硫酸盐计)Ignition residue,%      ≤ 0.05       0.2
氯化物(Cl)Chloride,%                        ≤ 0.003      0.005
硫酸盐及硒酸盐Sulfate and selenate,%        ≤ 0.05       0.1
铁(Fe)Iron,%                                ≤ 0.001      0.002
重金属(以Pb计)Heavy metals,%                ≤ 0.001      0.05
水不溶物Insoluble matter in water,%         ≤ 0.005      0.01


99.999% metals basis:


外观Appearance                          白色粉末或结晶
纯度Purity                              ≥99.999% Based On Trace Metals Analysis
Se                                      70.1 - 72.2 % (Gravimetric Analysis After Reduction With Sulfite)
ICP:                                    Confirms Selenium Component Confirmed
痕量金属分析Trace Metal Analysis        ≤20ppm by ICP Atomic emission
(Li、Na、Mg、Ca、Ga、In、Si、Cr、Mo、Pr、As、Fe)

Storage:
易吸潮,密封保存。
用途  制造其他硒化合物,生物碱检定,氧化剂。与氨反应生成氮和硒,在醇溶液中则生成亚硒酸乙基铵[NH4(C2H5)SeO3],与肼生成氮和黑色无定形硒,与盐酸羟胺生成氮和红棕色无定形硒,与硝酸生成亚硒酸。
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