| Information | |
|---|---|
| has gloss | (noun) a red-orange salt used as a mordant sodium dichromate, sodium bichromate |
| has gloss | eng: Sodium dichromate is the chemical compound with the formula Na2Cr2O7. Usually, however, the salt is handled as its dihydrate Na2Cr2O7·2H2O. Virtually all chromium ore is processed via conversion to sodium dichromate. In this way, many millions of kilograms of sodium dichromate are produced annually. In terms of reactivity and appearance, sodium dichromate and potassium dichromate are very similar. The sodium salt is, however, around twenty times more soluble in water than the potassium salt (49 g/L at 0 °C) and its equivalent weight is also lower, which is often desirable. |
| lexicalization | eng: Hydrated sodium dichromate |
| lexicalization | eng: sodium bichromate |
| lexicalization | eng: sodium dichromate |
| subclass of | (noun) a substance used to treat leather or other materials before dyeing; aids in dyeing process mordant |
| subclass of | (noun) a compound formed by replacing hydrogen in an acid by a metal (or a radical that acts like a metal) salt |
| Meaning | |
|---|---|
| Arabic | |
| has gloss | ara: ثنائي كرومات الصوديوم هو مركب كيميائي له الصيغة Na2Cr2O7 ، ويكون على شكل بلورات برتقالية، تحوي في بنيتها البلورية على جزيئتي ماء Na2Cr2O7.H2O . الخواص * يفقد المركب جزيئتي الماء عند التسخين فوق 100°س . * ينحل مركب كرومات الصوديوم بشكل جيد جداً بالماء حوالي 230 غ / 100 مل ماء عند 20°س. * محاليله في الماء حمضية حيث أن محلول 10% منه له pH مقداره 3.5 . * يمتاز المركب بخواصه المؤكسدة. |
| lexicalization | ara: ثنائي كرومات الصوديوم |
| German | |
| has gloss | deu: Natriumdichromat(VI) (Na2Cr2O7) ist ein Natriumsalz der Dichromsäure (H2Cr2O7) und zählt zu den Chromaten. Es kristallisiert auch als Dihydrat (Na2Cr2O7 · 2 H2O, molare Masse 297,99 g/mol). |
| lexicalization | deu: Natriumdichromat |
| French | |
| has gloss | fra: Le dichromate de sodium est un composé chimique de formule . Toutefois, il est généralement utilisé sous sa forme dihydraté, ·2. On lutilise en chimie organique comme un oxydant. En termes de réactivité et dapparence, il est semblable au dichromate de potassium. Enfin, il est considéré cancérigène. |
| lexicalization | fra: Dichromate de sodium |
| Italian | |
| has gloss | ita: Il bicromato di sodio è un sale di sodio dell'acido bicromico. |
| lexicalization | ita: Bicromato di sodio |
| Dutch | |
| has gloss | nld: Natriumdichromaat is een natriumzout van dichroomzuur (H2Cr2O7). De formule van natriumdichromaat is Na2Cr2O7, maar het komt gewoonlijk voor als dihydraat (Na2Cr2O7 • 2 H2O, molecuulmassa 297,98 g/mol). Bij verwarming gaat het over in de watervrije vorm bij ongeveer 100°C, en het smelt bij ongeveer 357°C. Boven 400°C ontbindt het. |
| lexicalization | nld: natriumdichromaat |
| Portuguese | |
| has gloss | por: Dicromato de sódio, comercialmente também chamado de bicromato de sódio, é o composto químico com a fórmula . Normalmente o sal é usado em sua forma dihidratada . Sua química, aparência, e comportamento são muito similares ao de seu similar mais largamente encontrado dicromato de potássio. Esta substância é aproximadamente vinte vezes mais solúvel em água que o similar sal de potássio (49 g/L a 0 °C) e seu peso equivalente é também mais baixo, o que frequentemente é desejável. |
| lexicalization | por: Dicromato de sódio |
| Swedish | |
| has gloss | swe: Natriumdikromat är ett salt av natrium och kromsyra med formeln Na2Cr2O7. |
| lexicalization | swe: Natriumdikromat |
| Chinese | |
| has gloss | zho: 重铬酸钠是一个无机化合物，俗称红矾钠，化学式为Na2Cr2O7，常以二水合物的形式（Na2Cr2O7·2H2O）使用。其化学性质与重铬酸钾类似，在水中的溶解度约是后者的20倍（49 g/L、0°C），相对分子质量更小， 然而其应用却不及重铬酸钾广泛。 |
| lexicalization | zho: 重铬酸钠 |
| Links | |
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| Show unreliable ▼ | |
| similar | e/Sodium dichromate |
| Media | |
|---|---|
| media:img | 2.svg |
| media:img | Dichroman sodný.JPG |
| media:img | Dichromat-Ion2.svg |
| media:img | Hazard N.svg |
| media:img | Hazard O.svg |
| media:img | Hazard T.svg |
| media:img | Na+.svg |
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