QUE SIGNIFIE SODIUM DICHROMATE EN ANGLAIS
Dichromate de sodium
Le dichromate de sodium est le composé chimique de formule Na2Cr2O7. Habituellement, cependant, le sel est traité sous forme de dihydrate Na2Cr2O7 · 2H2O. Pratiquement tout le minerai de chrome est traité par conversion en dichromate de sodium. De cette façon, de nombreux millions de kilogrammes de dichromate de sodium sont produits chaque année. En termes de réactivité et d'apparence, le dichromate de sodium et le dichromate de potassium sont très similaires. Le sel de sodium est cependant environ vingt fois plus soluble dans l'eau que le sel de potassium et son poids équivalent est également plus faible, ce qui est souvent souhaitable.
définition de sodium dichromate dans le dictionnaire anglais
La définition du dichromate de sodium dans le dictionnaire est un composé solide cristallin soluble, généralement obtenu sous forme de cristaux rouges ou oranges et utilisé comme agent oxydant, inhibiteur de corrosion et mordant. Formule Na2Cr2O7 Aussi appelé: bichromate de sodium.
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10 LIVRES EN ANGLAIS EN RAPPORT AVEC «SODIUM DICHROMATE»
Découvrez l'usage de
sodium dichromate dans la sélection bibliographique suivante. Des livres en rapport avec
sodium dichromate et de courts extraits de ceux-ci pour replacer dans son contexte son utilisation littéraire.
1
Technical Report on Toxicology and Carcinogenesis Studies of ...
Sodium dichromate dihydrate was obtained from Aldrich Chemical Company (
Milwaukee, WI) in two lots. The two lots were combined at the analytical
chemistry laboratory, Battelle Memorial Institute (Columbus, OH), and assigned a
new lot ...
2
Hazardous Laboratory Chemicals Disposal Guide, Third Edition
Violent reaction between sodium dichromate dihydrate and aqueous hydroxy,
lamine may accelerate to explosion. Anhydrous hydroxylamine explodes
violently on contact with sodium dichromate.5 Organic Residues, Oxidizable
Substances, ...
Margaret-Ann Armour,
2003
3
Comprehensive Practical Organic Chemistry: Preparations And ...
V.K. Ahluwalia, R. Aggarwal, V.K. Ahluwalia. Sodium dichromate is also used for
the oxidation of a side chain. The molecule should not contain any other groups (
e.g. NH2, OH) which are affected by the oxidising agent. Thus, p-N02C6H4CH3 ...
V.K. Ahluwalia, R. Aggarwal, V.K. Ahluwalia
4
Synthetic Approaches in Organic Chemistry
This reagent is used as sodium dichromate and sulfuric acid H2SO4) mixture.
Acetic acid may also be employed. Solution of hexavalent chromium in aqueous
sulfuric acid contains an equilibrating mixture of the acid chromate (VI) ion and
the ...
Sodium dichromate is the most important commercial chromium compound, from
which many other chromium compounds are manufactured. It is a bright orange,
crystalline substance. An analysis of sodium dichromate gives the following ...
Darrell D. Ebbing, Steven D. Gammon,
2009
6
Conservation of Wood Artifacts: A Handbook
1998) 7.2.8.2 Potassium Dichromate (Potassium Bichromate) Trade name: See
under sodium dichromate Formula: K2Cr2O7 Properties: Orange-red crystals,
m.p. 398 °C, moderately soluble in cold water, very soluble in hot water, insoluble
in ...
A. Unger, Arno Schniewind, W. Unger,
2001
7
Magnesium and Magnesium Alloys
... 96% sulfuric acid Sodium dichromate 70% nitric acid Temperature Magnesium
Prerinse delay in air Sodium dichromate Calcium fluoride Free fluoride pH(g)
Temperature Sodium acid fluoride Sodium dichromate Aluminum sulfate 70%
nitric ...
M. M. Avedesian, Hugh Baker,
1999
8
Graham's Electroplating Engineering Handbook
Stainless steel, nickel, nickel- or chromium- plated steel should be scrubbed with
magnesium oxide, rinsed and passivated by immersion in a 2% solution of
sodium dichromate for 30 to 60 seconds at room temperature. After this, the
mandrel ...
9
Environmental Pollution & Toxicology
RESULTS AND DISCUSSION Male Rattus rattus treated on alternate day with
intraperitoneal injection of sodium dichromate (5mg/kg b.wt.) up to 15 and 30
days decreased in their body weight and GSI levels (Table 16.1 and 16.2).
During ...
Bishwambhar Datt Joshi, P. C. Joshi, Namita Joshi,
2008
10
The Facts on File Dictionary of Inorganic Chemistry
sodium dichromate(VI) sodium carbonate (soda ash; Na2CO3) A white
amorphous powder, which aggregates on exposure to air owing to the formation
of hydrates. Industrially it is prepared by the SOLVAY PROCESS. On crystallizing
from ...
10 ACTUALITÉS CONTENANT LE TERME «SODIUM DICHROMATE»
Découvrez de quoi on parle dans les médias nationaux et internationaux et comment le terme
sodium dichromate est employé dans le contexte des actualités suivantes.
Global sodium dichromate market size, share, trends analysis and …
The Global Sodium Dichromate Industry Report 2015 is a professional and in-depth study on the current state of the Sodium Dichromate industry. Radiant ... «WhaTech, juil 15»
Explore Global sodium dichromate market trends & 2020 forecast …
The Global Sodium Dichromate Industry Report 2015 is a professional and in-depth study on the current state of the Sodium Dichromate industry. «WhaTech, juin 15»
Decision Overturned: No Justice For Burn Pit Veterans
For decades, Iraqis had treated the water with sodium dichromate, an anticorrosion agent that contains hexavalent chromium, a known carcinogen. «DisabledVeterans.org, mai 15»
Court overturns $85 million judgement awarded to soldiers from Iraq …
The hearing was to examine whether the U.S. Army has responded appropriately to the exposure of U.S. military personnel to sodium dichromate, a known ... «Business Insider, mai 15»
Texas judge tosses many claims brought by troops against KBR …
... hazards -- specifically the presence of the carcinogen hexavalent chromium, which is found an anticorrosion compound called sodium dichromate. «OregonLive.com, janv 15»
KBR continues to seek about $30 million in legal costs plus …
In time, they learned that a chemical compound called sodium dichromate, which contains the carcinogen hexavalent chromium, had contaminated the site. «OregonLive.com, janv 15»
Guard Members Defend $81M KBR Toxin Award In 9th Circ.
KBR did not misrepresent sodium dichromate's risks to National Guard members who merely "happened to be from Oregon,” according to the plaintiffs. Instead ... «Law360, mars 14»
Passivation Tanks
The dichromate portion of the liquor appears to be darkening the process tank's ... is a combination of nitric and sodium dichromate passivation (20-25 percent ... «Products Finishing Magazine, juil 13»
Poisoned Guardsman to Get $75M From KBR
All together, 39 guardsmen had sued over their exposure to sodium dichromate and subsequent hexavalent chromium poisoning while stationed at a water plant ... «Courthouse News Service, mai 13»
KBR verdict: Judge affirms $81 million of damages awarded to 12 …
Iraqis had treated the water with sodium dichromate, an anticorrosion agent that contains hexavalent chromium, a known carcinogen. Soldiers and others ... «OregonLive.com, avril 13»