The compound is occasionally used as a pigment, but this usage is limited due to the very toxic and carcinogenic nature of hexavalent chromium compounds such as chromate salts. (wikipedia.org)
citation needed] All applications suffer from the high toxicity of chromium(VI) species to humans, with chromates listed as IARC Group 1 carcinogens while also very corrosive (e.g. capable of producing permanent eye damage) and genotoxic. (wikipedia.org)
I am looking for information that describes the electrical properties of zinc plating with "chromate conversion" utilizing trivalent chromium in contrast to hexavalent chromium. (finishing.com)
and zinc-aluminium (mass fraction of aluminium: 5 %) alloys, total chromium content per unit area on zinc and cadmium, mass per unit area of both colourless and coloured coatings, satisfactory adhesion of chromate conversion coatings, and quality of chromate coatings. (iso.org)
Conclusions: Chromate contact allergy can still be found in concrete workers, despite the legislation regulating the amount of hexavalent chromium (chromate) in cement. (lu.se)
These methods are applicable to - colourless and coloured chromate conversion coatings containing trivalent and hexavalent chromium in varying proportions and produced by either chemical or electrochemical processes, and - chromate coatings that are free from any supplementary coatings, such as oil, water or solventbased polymers or wax. (iteh.ai)
The carcinogenicity of strontium chromate is attributed to the hexavalent chromium ion and not to strontium. (cdc.gov)
The only stable strontium compound that may cause cancer is strontium chromate, but this is due to chromium not strontium. (cdc.gov)
Potassium chromate5
Potassium chromate is a yellow, odorless, crystalline solid. (honeywell.com)
Potassium chromate is a chemical compound . (wikipedia.org)
Potassium chromate is found very rarely as a mineral . (wikipedia.org)
Ten drops of potassium chromate amount of salt added during the prepa- elevated blood pressure ( 3 ). (who.int)
Showed chromate removal1
19 ]. The nanocomposite showed chromate removal efficacy of ~50 mg Cr(VI)/g adsorbent at 200 ppm chromate solution as well as preserved adsorption capacity up to 6 repeated adsorption tests. (hindawi.com)
Chem film1
UPI of North Alabama has the capacity and qualifications to meet your production and delivery needs specifically in anodizing, chem film, and chromate conversion alodine. (unitedplating.com)
Inorganic2
Calcium chromate is an inorganic compound with the formula CaCrO4, i.e. the chromate salt of calcium. (wikipedia.org)
The compound is occasionally used as a yellow inorganic pigment, or a corrosion inhibitor as part of the chromate conversion coating procedure. (wikipedia.org)
Clear chromate4
We currently use a zinc plate with clear chromate conversion process. (finishing.com)
Clear chromate is a chemical conversion coating that is applied over zinc plating during the surface coating process. (dynacast.com)
Clear chromate films are typically very thin, around .000001" and contribute no measurable thickness to the overall coating. (dynacast.com)
Clear chromate has a slight iridescent blue appearance. (dynacast.com)
Strontium chromate4
Strontium chromate is a chemical compound, with the formula SrCrO4. (partcommunity.com)
Strontium chromate is prepared from the reaction of strontium chloride with sodium chromate , or from a reaction between strontium carbonate with sodium dichromate . (partcommunity.com)
A number of agencies have classified strontium chromate as a human carcinogen by the inhalation route, on the basis of occupational and animal studies. (cdc.gov)
The International Agency for Research on Cancer (IARC) has assigned strontium chromate, along with other chromates, to Group 1, as a human carcinogen (IARC 1990, 2002a). (cdc.gov)
Hexavalent chromates2
As long as you don't use the new "topcoats" that have been designed to help trivalent chromates approach the corrosion resistance of traditional yellow hexavalent chromates, I don't see any change. (finishing.com)
With a bright, cosmetically pleasing finish, this alternative combined conversion-functional coating meets stricter commercial and U.S. and European Union environmental mandates, avoiding the concerns with prohibited products using toxic hexavalent chromates. (cwmdiecast.com)
Trivalent4
I suppose that if chrom-"ate" is read as CrO3 then 'trivalent chromate' would actually be an oxymoron. (finishing.com)
But if you have been using clear chromates all this time, your salt spray requirements are minimal and your platers could well have been using clear trivalent chrome conversion coatings all along. (finishing.com)
Hi, I'm a student from Mexico, and got a work to do about cleaning methods for metallic and organic contaminants on trivalent chromate conversion baths. (finishing.com)
With a high protection trivalent chromate over the appropriate zinc thickness, SEAL #1 can help provide over 1000 hours of salt spray protection to red rust. (metallinechemicals.com)
Sodium5
Sodium chromate is a known human carcinogen (IARC-1). (flinnsci.com)
The Bureau procedure consists of reacting chromite with molten naoh under oxidizing conditions to form sodium chromate (na2cro4). (cdc.gov)
Sodium chromate crystals were produced that contained less than 0.01 pct naoh. (cdc.gov)
La haute teneur en sel du pain blanc pourrait être un facteur qui contribue à la forte consommation de sodium au Maroc, surtout quand nous savons que le pain est un aliment de base dans le pays. (who.int)
Toutes les politiques et initiatives visant à réduire la consommation de sodium devraient cibler le pain comme outil stratégique pour réduire l'apport en sel. (who.int)
Salts1
Since the chromate salts are solids, your optional unit of mL/L is not applicable. (finishing.com)
WIRE SHELVES1
Zinc-Chromate finish wire shelves is so tough that we offer a 10 Year Limited Warranty against rust and corrosion. (standardshelving.com)
Concentration3
Time, pH, concentration dependent chromate adsorption tests, and magnetic separation experiments exhibited that both nanocomposites effectively adsorb and easily collect chromate. (hindawi.com)
If you are using passivation as a quench - that is you plunge hot steel, straight from the galvanizing molten zinc into a tank of passivation chromate mix, then a very low concentration (like 0.2%) is required. (finishing.com)
Chromate concentration in a liquid can be measured using the colorimetric measuring principle. (endress.com)
Corrosion2
Chromate conversion leaves no measurable build-up, but provides excellent corrosion resistance. (unitedplating.com)
Aluminum Chromate will preserve the life of a part by inhibiting corrosion and preventing oxidation that naturally forms over untreated aluminum. (gattoplaters.com)
Chemicals1
Magnesium Chromate is used in chromate conversion coatings, water treatment chemicals, in sealants and rubbers. (micronmetals.com)
IARC1
Occupational Safety And Health Guideline For Calcium Chromate Archived August 8, 2007, at the Wayback Machine IARC (2012) [17-24 March 2009]. (wikipedia.org)
Reagent1
Sensitizing gelatin in photography, in textile printing pastes, in fixing chromate dyes on wool, and as a reagent in analytical chemistry. (drugfuture.com)
PARIS--( BUSINESS WIRE )--PPG Industries' (NYSE:PPG) aerospace business has begun using its chromate-free polysulfide aircraft window sealant on its glass-faced acrylic replacement windshields for Bombardier Challenger 600 Series business jets to provide operators with an environmentally-responsible moisture seal. (aeroweb-fr.net)
Slight1
Chem/Chromate Films have minimal electrical resistance, with slight variables between Class 1A and 3. (unitedplating.com)
Download the best free chromate images at Freerange Stock. (freerangestock.com)
Color1
Acetate ion added as acetic acid [affil link on Ebay & Amazon ] greatly improves the appearance in that the surface has no color and does not show chromate stains. (finishing.com)
Chrome1
It features a true powder-epoxy over zinc-chromate electroplating that ensures a durable finish that resembles chrome with a duller finish. (standardshelving.com)