Uranyl formate (UO2(CHO2)2·H2O) is a salt that exists as a fine yellow free-flowing powder occasionally used in transmission electron microscopy. It is occasionally used as a 0.5% or 1% aqueous negative stain in transmission electron microscopy (TEM) because it shows a finer grain structure than uranyl acetate. However, uranyl formate does not easily go into solution, and once dissolved, has a rather limited lifetime as a stain. It is quite sensitive to light, especially ultraviolet light, and will precipitate if exposed.
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| - Formiate d'uranyle (fr)
- Uranyl formate (en)
- 甲酸铀酰 (zh)
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| - Le formiate d'uranyle est un composé chimique de formule UO2(HCOOH)2 utilisé parfois en solution aqueuse à 0,5 ou 1 % pour la coloration négative en microscopie électronique en transmission car il offre une meilleure résolution que l'acétate d'uranyle. Il est cependant moins soluble que ce dernier et n'a qu'une durée de vie limitée comme colorant, avec de surcroît une certaine sensibilité à la lumière, notamment ultraviolette, qui favorise sa précipitation. (fr)
- Uranyl formate (UO2(CHO2)2·H2O) is a salt that exists as a fine yellow free-flowing powder occasionally used in transmission electron microscopy. It is occasionally used as a 0.5% or 1% aqueous negative stain in transmission electron microscopy (TEM) because it shows a finer grain structure than uranyl acetate. However, uranyl formate does not easily go into solution, and once dissolved, has a rather limited lifetime as a stain. It is quite sensitive to light, especially ultraviolet light, and will precipitate if exposed. (en)
- 甲酸铀酰是铀的甲酸盐之一,化学式为UO2(HCOO)2,对光敏感。它存在无水物和一水合物。无水物在水中水解,生成碱式盐UO2(HCOO)2·UO3·2H2O,如果在水中加热至沸腾,会生成UO3·H2O。它高温下可以分解,生成U3O8。 (zh)
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| - Le formiate d'uranyle est un composé chimique de formule UO2(HCOOH)2 utilisé parfois en solution aqueuse à 0,5 ou 1 % pour la coloration négative en microscopie électronique en transmission car il offre une meilleure résolution que l'acétate d'uranyle. Il est cependant moins soluble que ce dernier et n'a qu'une durée de vie limitée comme colorant, avec de surcroît une certaine sensibilité à la lumière, notamment ultraviolette, qui favorise sa précipitation. (fr)
- Uranyl formate (UO2(CHO2)2·H2O) is a salt that exists as a fine yellow free-flowing powder occasionally used in transmission electron microscopy. It is occasionally used as a 0.5% or 1% aqueous negative stain in transmission electron microscopy (TEM) because it shows a finer grain structure than uranyl acetate. However, uranyl formate does not easily go into solution, and once dissolved, has a rather limited lifetime as a stain. It is quite sensitive to light, especially ultraviolet light, and will precipitate if exposed. (en)
- 甲酸铀酰是铀的甲酸盐之一,化学式为UO2(HCOO)2,对光敏感。它存在无水物和一水合物。无水物在水中水解,生成碱式盐UO2(HCOO)2·UO3·2H2O,如果在水中加热至沸腾,会生成UO3·H2O。它高温下可以分解,生成U3O8。 (zh)
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