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Product Name |
N-Hydroxysuccinimide |
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Formula |
C4H5NO3 |
Molecular Weight |
115.09 |
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CAS NO. |
6066-82-6 |
Quantity |
500KG |
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Items |
Specification |
Results |
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Appearance |
white powder |
Conforms |
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Assay |
≥99% |
99.1% |
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Melting point |
95-98 °C |
95-98 °C |
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CONCLUSION |
The result conform with standard |
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Melting point 95-98 ℃ (L)
Boiling point 215.33 ℃ (rough estimate)
Density 1.4769 (rough estimate)
Refractive index 1.4080 (estimated)
Storage conditions: storage temperature +2 ° C to +8 ° C
Solubility of dimethyl sulfoxide (soluble), methanol (slight)
Acidity coefficient (PKA) 7.81 ± 0.20 (predicted value)
Liquid solid form
The color is transparent yellow or brown
PH value 5-7 (50g/l, H2O, 20 ℃)
The general chemical formula of vanadium bismuth tetroxide is [bi2o2] 2 + [vo3.5-0.5] 2 -, in which the mouth represents the oxygen ion vacancy inherent in the oxygen octahedron. The dark colored ball in the figure represents Bi, and the rightmost one represents bi2o22 +. BiVO4 is a non-tio2 based visible light semiconductor photocatalyst. BiVO4 has three crystal structures, namely monoclinic scheelite, tetragonal zircon and tetragonal scheelite. Among them, when tetragonal zircon can be transformed into monoclinic scheelite structure under heating conditions (when heated to chemicalbook 670 ~ 670k), monoclinic scheelite and tetragonal scheelite type can also be transformed into each other (528k). The tetragonal monoclinic phase BiVO4 has the highest visible light activity. BiVO4 with Scheelite structure (monoclinic system) shows excellent catalytic activity under visible light irradiation, and has higher oxygen production activity than typical photocatalyst WO3 (band gap 2.8ev). The quantum efficiency at 450nm can reach 9%. This makes BiVO4 more and more important in the field of visible light catalysis.
