About: Uranyl formate

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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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rdf:type	Thing dul:ChemicalObject chemical substance Chemical compound yago:WikicatUranylCompounds yago:WikicatNuclearMaterials yago:Abstraction100002137 yago:Cognition100023271 yago:Compound105870180 yago:Concept105835747 yago:Content105809192 yago:Idea105833840 yago:Material114580897 yago:Matter100020827 yago:Part113809207 yago:PhysicalEntity100001930 yago:PsychologicalFeature100023100 yago:Relation100031921 chemical compound yago:Substance100019613 yago:Whole105869584
rdfs:label	Formiate d'uranyle (fr) Uranyl formate (en) 甲酸铀酰 (zh)
rdfs:comment	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)
dcterms:subject	Uranyl compounds Electron microscopy stains Nuclear materials Formates
Wikipage page ID	14157979 (xsd:integer)
Wikipage revision ID	1118203816 (xsd:integer)
Link from a Wikipage to another Wikipage	Uranyl compounds Precipitation (chemistry) Electron microscope Aqueous solution Uranyl acetate Electron microscopy stains Staining Nuclear materials Formates Transmission electron microscopy Solution (chemistry) Negative stain
Link from a Wikipage to an external page	http://www.2spi.com/catalog/chem/Uranyl_Formate.shtml https://web.archive.org/web/20150703005243/http:/www.2spi.com/catalog/chem/Uranyl_Formate.shtml
sameAs	Uranyl formate Uranyl formate Uranyl formate Uranyl formate Uranyl formate Uranyl formate Uranyl formate Uranyl formate Uranyl formate Uranyl formate Uranyl formate
dbp:wikiPageUsesTemplate	dbt:Chembox dbt:Chembox_Hazards dbt:Chembox_Identifiers dbt:Chembox_Properties dbt:Webarchive dbt:Cascite dbt:Chemspidercite dbt:Stdinchicite dbt:Uranium_compounds dbt:Inorganic-compound-stub
date	2015-07-03 (xsd:date)
url	https://web.archive.org/web/20150703005243/http:/www.2spi.com/catalog/chem/Uranyl_Formate.shtml
Verifiedfields	changed (en)
verifiedrevid	470620113 (xsd:integer)
Watchedfields	changed (en)
has abstract	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)
gold:hypernym	Powder
prov:wasDerivedFrom	wikipedia-en:Uranyl_formate?oldid=1118203816&ns=0
page length (characters) of wiki page	2065 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Uranyl_formate
is Link from a Wikipage to another Wikipage of	Solubility table Glossary of chemical formulae Negative stain
is foaf:primaryTopic of	wikipedia-en:Uranyl_formate

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