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GEL DIOXIDO SILICIO [1 record]
Record 1 - internal organization data 2011-05-19
Record 1, English
Record 1, Subject field(s)
- Chemistry
- Analytical Chemistry
- Geochemistry
- Biotechnology
Record 1, Main entry term, English
- silica gel
1, record 1, English, silica%20gel
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- sil gel 2, record 1, English, sil%20gel
- silicic acid gel 3, record 1, English, silicic%20acid%20gel
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
Colloidal silica set into a rigid gel which resembles coarse white sand, is made by coagulation of hydrated silica, possesses many fine pores, is capable of absorbing moisture from the air, and is used as a selective adsorbent, a drying agent and as a catalyst or catalyst carrier. 4, record 1, English, - silica%20gel
Record number: 1, Textual support number: 1 CONT
... opal-A is precipitated on filamentous bacteria, and in open spaces in chimneys, as a silica gel. 5, record 1, English, - silica%20gel
Record number: 1, Textual support number: 1 OBS
The gel itself is colourless but, when used in desiccators, etc., a blue cobalt salt is added. As moisture is taken up, the salt turns pink, indicating that the gel needs to be regenerated (by heating). 6, record 1, English, - silica%20gel
Record number: 1, Textual support number: 2 OBS
Not to be confused with the more generic term "colloidal silica." 7, record 1, English, - silica%20gel
Record 1, Key term(s)
- silicic-acid gel
Record 1, French
Record 1, Domaine(s)
- Chimie
- Chimie analytique
- Géochimie
- Biotechnologie
Record 1, Main entry term, French
- gel de silice
1, record 1, French, gel%20de%20silice
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- silicagel 2, record 1, French, silicagel
correct, masculine noun, less frequent
- Silicagel 3, record 1, French, Silicagel
correct, trademark, see observation, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Variété de silice colloïdale, obtenue par action d'un acide sur le silicate de sodium suivie d'une déshydratation, caractérisée par une grande surface spécifique et une grande hygroscopicité, que l'on utilise comme adsorbant dans les colonnes chromatographiques et comme produit de déshydratation. 4, record 1, French, - gel%20de%20silice
Record number: 1, Textual support number: 1 CONT
Le gel de silice est d'un emploi très général et convient bien à la fixation des substances polaires, mais retient fortement les composés à l'étuve à 150 ou 200 °C avant d'être utilisé. Ses sites acides pourront être partiellement masqués en le traitant par une base, soude ou potasse, ou en incorporant aux éluants de petites proportions d'amines ou d'ammoniaque. 5, record 1, French, - gel%20de%20silice
Record number: 1, Textual support number: 1 OBS
La silice colloïdale, lorsqu'elle prend en gel, le fait avec une très grande rapidité, emprisonnant des organismes vivants ou encore pourvus d'une partie de leur substance molle. [...] C'est dans un gisement de silice colloïdale que nous connaissons le mieux les Ptérobranches et les Graptolithes du Trémadoc. 6, record 1, French, - gel%20de%20silice
Record number: 1, Textual support number: 2 OBS
La gamme de gels à base de silice : SpherosilMC (gel d'adsorption et d'échange d'ions) sont des supports utilisés dans l'industrie [de la biologie] pour les purifications à grande échelle de l'insuline, de dérivés sanguins, d'anticorps monoclonaux. 7, record 1, French, - gel%20de%20silice
Record number: 1, Textual support number: 3 OBS
SilicagelMC est une marque de commerce. 8, record 1, French, - gel%20de%20silice
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Química
- Química analítica
- Geoquímica
- Biotecnología
Record 1, Main entry term, Spanish
- gel de sílice
1, record 1, Spanish, gel%20de%20s%C3%ADlice
correct, masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
- gel de silicio 2, record 1, Spanish, gel%20de%20silicio
masculine noun
- gel de dióxido de silicio 2, record 1, Spanish, gel%20de%20di%C3%B3xido%20de%20silicio
masculine noun
- silicagel 3, record 1, Spanish, silicagel
masculine noun
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 OBS
Absorbente regenerable consistente en sílice amorfa. No tóxico, no combustible. Agente deshumectante y deshidratante. 4, record 1, Spanish, - gel%20de%20s%C3%ADlice
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