How To Use Chromate In A Sentence
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_Yellow -- Rich: _ -- Work five pounds of goods one-half hour in a boiling bath with three ounces bichromate of potassa and two ounces alum; lift and expose till well cooled and drained; then work one-half hour in another bath with five pounds of fustic.
The Whitehouse Cookbook (1887) The Whole Comprising a Comprehensive Cyclopedia of Information for the Home
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Rinse with water will be clear pattern, and then 5% sodium dichromate coating surface in the screen version of the brushing time, that is made of printed silk screen drama.
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Certain salts, such as the dichromates, borates, and silicates, act as inhibitors to the aqueous corrosion of zinc.
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The chloroform, which is now free from alcohol and contains all the fusel oil, is treated with a solution of 5 grammes of potassium bichromate in 30 grammes of water and 2 grammes of sulphuric acid, and then heated in a closed flask for six hours on a water bath at 85°.
Scientific American Supplement, No. 365, December 30, 1882
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A method of H-D two-line analysis is given and isochromate equation of pseudo-color code of optical image is obtained.
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The two listed active ingredients, white bryony (a type of vine) and potassium dichromate, are diluted to .000001 PPM and 1 PPM respectively.
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Certain salts, such as the dichromates, borates, and silicates, act as inhibitors to the aqueous corrosion of zinc.
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He dexone and the ringworm acetophenetidin powerless dichromate from the troopship he verticil.
Rational Review
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Chromate conversion coating resulting in the formation of a passivating film.
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Sodium 276 acetate 407 bicarbonate 285 carbonate 282 carbonate, historical 284 chloride 280 chromates 386 hydrogen carbonate 285 hydroxide 278 hyposulphite 282 iodate 191 nitrate 285 occurrence 276 peroxide 277 phosphates 286 preparation 276 properties 277 sulphate 281 sulphite 281 tetraborate 287 thiosulphate 282
An Elementary Study of Chemistry
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The addition of alcohol to the bichromate bath — sometimes recommended to harden the film and allow it to stand a higher temperature, and to hasten the desiccation of the tissue — is objectionable, for the spirits tend to reduce the bichromate, which is transformed into the green salt, and, therefore, a partial or complete insolubilization of the gelatine is the result.
Photographic Reproduction Processes
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Whether Daniel Burnham's jaunty skyscraper is better appreciated when lavished in gum bichromate and platinum is another matter.
From the Shadows of Giants
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It turns out that they were victims of chromated copper arsenic poisoning.
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This happened when organic polymers replaced chromates in both external and internal water treatment.
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I do remember, however, sneaking into the chemistry supply area in high school to get ammonium dichromate to make flaming "volcanoes," so maybe I do qualify.
Martin Chalfie - Autobiography
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This is carried out by boiling the wool in a solution of the metal, such as bichromate of potash, chrome alum or chrome fluoride when chrome is to be used as a mordant, with alum or sulphate of alumina when alumina is required to be deposited on the fibre, and with copperas when iron is to be the mordant.
The Dyeing of Woollen Fabrics
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Potassium dichromate is an oxidizer and therefore presents a fire hazard.
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It is then titrated with decinormal silver nitrate till a drop of the solution is turned brown with neutral chromate.
Scientific American Supplement, No. 324, March 18, 1882
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This was the discovery of the 'black reaction' (reazione nera), based on nervous tissue hardening in potassium bichromate and impregnation with silver nitrate.
Life and Discoveries of Camillo Golgi
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The colors used for this style of painting are zinc white, green oxide of chrome, cobalt green, chromate of lead, colcothar, ochers, and ultramarine.
Scientific American Supplement, No. 483, April 4, 1885
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Most of these extracts contain the coloring matter in two states, the developed and the undeveloped, and an oxidizing mordant such as bichromate of potash causes the latter as well as the former to enter completely into combination with a metallic base; whereas many of the other mordants, such as alumina or tin compounds, merely take up the developed portion of the coloring matter together with such small and variable proportions of the undeveloped as might undergo oxidation during the process of dyeing.
Scientific American Supplement, No. 711, August 17, 1889
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Shoe dermatitis may be a result of contact allergy to chromates used in the tanning of leather, rubber found in the soles or lining, or, less commonly, colophony, a pine resin widely used in the adhesives used in the manufacture of shoes.
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Greater contrast may be obtained by adding small amounts of a 5% solution of potassium bichromate.
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The coating includes from 2 to 4 parts of an oxide and one part of a chromate, molybdate, oxalate, phosphate, or tungstate.
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_ -- Morphine and its acetate give an orange-red colour with nitric acid, becoming brighter on standing; decompose iodic acid, setting free iodine; with perchloride of iron, gives a rich indigo-blue; with bichromate of potassium, a green turning to brown.
Aids to Forensic Medicine and Toxicology
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With growing environmental awareness, people appeal to limit or prohibit the application of some preservatives toxic to human, such as chromated copper arsenate(CCA).
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Into a pint gem-jar put water 10 parts, sulphuric acid 1 part, potass, bichromate 1 part.
Ontario Teachers' Manuals: Nature Study
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To remove main disturbing ion, chlorine ion in the COD potassium dichromate reflux method, silver sulfate replaces mercury sulfate as a screening agent.
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The film has a fritted structure and is a complex mixture of chemical compounds - mainly zinc ammonium phosphate and chromates.
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The glycerol content is ascertained by taking 2.5 grammes, adding lead subacetate solution, and filtering without increasing the bulk more than is absolutely necessary; the solution is concentrated to about 25 c.c., and the oxidation with bichromate and sulphuric acid conducted as described in the examination of Crude Glycerine.
The Handbook of Soap Manufacture
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But do not reuse or burn lumber from old decks, fences, playground equipment or any pressure-treated wood structures from before 2008, because the wood was probably treated with chromated copper arsenate, which is poisonous.
Green Scene: Some ideas for an environmentally friendly landscape
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Others have suggested that a mixture of egg white and bichromate produces a photosensitive mixture that works when painted on the linen.
The Shroud Codex
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Howard Mielke, Tulane chemistry research professor with the Tulane-Xavier Center for Environmental Research, said that arsenic and chromium leached into soils in city playgrounds for decades from swing sets and other equipment -- like tables, benches and fences -- built from lumber treated with chromated copper arsenate or CCA.
Susan Buchanan: City Playgrounds Tackle Toxic Soil and Equipment
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It is obtained impure, as a by product, when for the preparation of valerianic acid, fusel-oil is distilled with bichromate of potash and sulphuric acid.
The Art of Perfumery And Methods of Obtaining the Odors of Plants
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By oxidation with bichromate of potash and sulphuric acid, fusel oil yields valerianic acid, which is used in medicine, and apple-oil, employed as a flavoring ingredient in confectionery.
The Art of Perfumery And Methods of Obtaining the Odors of Plants
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Under the action of light the bichromate employed to sensitize the albumen is reduced into chromic oxide which render insoluble this organic substance — or any other, such as caseine, gelatine, gum arabic, etc.; therefore whenever the film is not acted on in its whole thickness, the subjacent part being still soluble, is necessary washed off and with it the superficial impressed part, that is, the image.
Photographic Reproduction Processes
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I was amazed by two finds: a self-portrait by Edward Steichen, a bichromate gum photograph which appears as a painting - Steichen manipulated the print with brush-strokes to add both white and black shades.
Chicago: days 2-5
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He had very bad luck with the permanganate bleach and recommends the dichromate bleach instead.
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Early studies in yeast demonstrated selenate and chromate as effective inhibitors of sulfate uptake.
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She went online and ordered potassium dichromate, a corrosive chemical than can destroy human tissue.
Supreme Court hears soap opera story of interest to the tea party
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Chloride is complexed with the silver chromate and fixed in a circular pattern around the entry point.
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In addition, occupational causes include radon in indoor environments, arsenic, asbestos, chromates, chloromethyl ethers, nickel, polycyclic aromatic hydrocarbons, and other agents.
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The addition of alcohol to the bichromate bath — sometimes recommended to harden the film and allow it to stand a higher temperature, and to hasten the desiccation of the tissue — is objectionable, for the spirits tend to reduce the bichromate, which is transformed into the green salt, and, therefore, a partial or complete insolubilization of the gelatine is the result.
Photographic Reproduction Processes
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Potassium 287 acid carbonate 294 acid sulphate 294 acid sulphite 294 alum, aluminium 334 alum, chrome 384 alum, iron 352 and plant life 287 aurate 396 bromide 290 carbonate 293 chlorate 291 chloride 290 chromate 385 cyanide 293 dichromate 386 ferricyanide 352 ferrocyanide 352 hydroxide 288 hydroxide, action of halogens 289 hypochlorite 289 iodide 290 manganate 381 nitrate 291 occurrence 287 permanganate 381 preparation 288 sulphate 294
An Elementary Study of Chemistry
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She has also worked in platinum, gum dichromate, and encaustics.
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The suite accuses KBR of having knowingly allowed the soldiers to be exposed to the cancer causing chemical sodium dichromate while they were protecting a Iraq water pumping plant.
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You can change the color of the image by toning or applying gum bichromate emulsions to a finished platinum print.
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You may also face health risks from wood infused with chromated copper arsenate (CCA) if you sand it.
Arsenate and old space: House haunted? It could be worse
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“Thus, for example,” says Robert Hunt, “if a slip of paper prepared with the ammonio-citrate of iron be exposed partially to sunshine, and then washed with the bichromate of potash, the bichromate is deoxidized and precipitated upon the sunned portion, just as it would be if directly exposed to the sun’s rays.”
Photographic Reproduction Processes
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The hearings revealed that troops from Indiana, Oregon, South Carolina, and West Virginia were exposed to sodium dichromate, a known and highly potent carcinogen at the Qarmat Ali water treatment facility in Iraq.
David Isenberg: Qarmat Ali AND KBR, Redux
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Give any large areas a squirt of zinc chromate primer but beware - it is very toxic and carcinogenic.
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~ When potassium chromate is treated with an acid the potassium salt of the unstable dichromic acid (H_ {2} Cr_ {2} O_ {7}) is formed:
An Elementary Study of Chemistry
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The bright yellow Lichen, growing on rocks and walls, and old roofs, dyes a fine plum colour, if the wool is mordanted first with Bichromate of Potash.
Vegetable Dyes Being a Book of Recipes and Other Information Useful to the Dyer
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The scarcity of the metal precludes their present introduction as pigments, but if the chromates of thallium were found to resist the action of light and air, and not to become green by deoxidation of the chromic acid, they might possibly prove fitted for the palette.
Field's Chromatography or Treatise on Colours and Pigments as Used by Artists
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In an example, 0.5 gram of nitre was taken, and 59.4 c.c. of the "bichromate" solution were required.
A Text-book of Assaying: For the Use of Those Connected with Mines.
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The determination of COD in wastewater by potassium dichromate colorimetric method was discussed.
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The batteries of bichromate of potassium of the Tissandier brothers had given a speed of four yards a second.
Robur the Conqueror
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Potassium dichromate titration method was used for determining sodium lactate in compound sodium lactate injection.
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The paper discussed the possibility of using Oslo evaporator in the production of sodium dichromate.
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To maintain the saturated solution, add more of the distilled water or Ammonium Dichromate, always ensuring that a fine slurry of crystals is present on the bottom.
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Toussaint used Lister's antiseptic, carbolic acid, called phenol today, rather than bichromate.
Pasteur's 'Private Science'
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_ -- Morphine and its acetate give an orange-red colour with nitric acid, becoming brighter on standing; decompose iodic acid, setting free iodine; with perchloride of iron, gives a rich indigo-blue; with bichromate of potassium, a green turning to brown.
Aids to Forensic Medicine and Toxicology
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A few years ago I recommended carefully conducted dyeing trials on woolen cloth mordanted with bichromate of potash as the best and simplest mode adapted to such cases, and my subsequent experience enables me to confirm that observation to the fullest extent.
Scientific American Supplement, No. 711, August 17, 1889
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In this chromate, as in many others, the affinity of the chromic acid to the base is small; the former is liable to separate from the latter, and, by deoxidation, to become converted into green oxide of chromium.
Field's Chromatography or Treatise on Colours and Pigments as Used by Artists
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To remove main disturbing ion, chlorine ion in the COD potassium dichromate reflux method, silver sulfate replaces mercury sulfate as a screening agent.
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A systematic study was conducted to oxidation-reduction reaction of many kinds of small molecule alcohol with bichromate. A detailed analysis was conducted to reaction process.
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_ -- Work for twenty minutes at 80° F. in a bath of 10 lb. fustic extract, 5 lb. quercitron extract, 2 lb. logwood extract; heat to boil, work for half an hour, then enter in a cold bath of 2 lb. sodium bichromate and 5 lb. copper sulphate; work for twenty minutes, then heat to boil; work for twenty minutes more, wash and dry.
The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student
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The most regularly employed oxidizing agent for this set of reactions is a mixture called chromic acid, a mixture of sodium or potassium dichromate and sulfuric acid.
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The PPG Aerospace chromate-free depaint / repaint process includes a new exterior epoxy primer based on nanotechnology and an adhesion promoter PPG manufactures under license from Boeing, according to Alan Schoeder, PPG Aerospace commercial coatings global segment manager.
Undefined
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When tartar, argol, oxalic acid, lactic acids and other assistants of an organic nature are used, then a different effect is obtained, the bichromate is completely decomposed, and a deposit of chromium oxide formed on the wool.
The Dyeing of Woollen Fabrics
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I mentioned yesterday that analogous difference between chromium and chromate, the chromate is much more toxic than the trivalent chromium.
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A kind of chromium gel system of retarded crosslinking made of partially hydrolyzed polyacrylamide(HPAM), sodium bichromate and organic reductant sulfocarbamide was investigated.
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The oxidation of isosafrole is reaction with anhydride - acetone, anhydride - acetic acid, sodium bichromate - sulfuric acid and so on.
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The process of sodium dichromate production and its pollution situation of waste water are introduced.
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Sodium Chromate Cr-51 Injection was found to be subpotent.
NewsInferno
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~ Lead is found in nature chiefly as the sulphide (PbS), called galena; to a much smaller extent it occurs as carbonate, sulphate, chromate, and in a few other forms.
An Elementary Study of Chemistry
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Chromate passivation systems containing hexavalent chromium compounds are extensively used in electroplating and metal treatment processing.
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Common oxidants include the halogens (especially fluorine and chlorine), oxygen, ozone, potassium permanganate, potassium dichromate, nitric acid, and concentrated sulfuric acid.
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Certain salts, such as the dichromates, borates, and silicates, act as inhibitors to the aqueous corrosion of zinc.
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The breath sample is bubbled in one vial through a mixture of sulfuric acid, potassium dichromate, silver nitrate and water.
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Mr. Thomson had further alluded to the color obtained with logwood or logwood extract and wool mordanted with bichromate of potash, and seemed to be under the impression that the color thus obtained was not black, but blue.
Scientific American Supplement, No. 711, August 17, 1889
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-- Among minor reagents suggested as purifying substances for acetylene may be mentioned potassium permanganate, barium peroxide, potassium bichromate, sodium plumbate and arsenious oxide.
Acetylene, the Principles of Its Generation and Use
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To create his trademark pale golds, Van Gogh mixed the bright yellow lead chromate pigment with the white lead sulphate, creating a combination that was subtler than the pure yellow but susceptible to a reaction that creates viridian, a darker shade of spring green.
Chemists Called in as Van Gogh's Pigments Darken
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Diverse mechanisms may be responsible for the development of resistance for Cr in microbes, including chromate efflux 85.
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Zinc alloy castings exhibit clean as-cast surfaces which can be anodized, painted, chromated, polished, brushed or plated.
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It also confirms that the Army's assessment of the health risks associated with exposure to sodium dichromate for soldiers at Qarmat Ali are not very reliable.
David Isenberg: Qarmat Ali AND KBR, Redux
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The analysis of tilt boundary observed in lanthanum chromates was made.
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Potassium 287 acid carbonate 294 acid sulphate 294 acid sulphite 294 alum, aluminium 334 alum, chrome 384 alum, iron 352 and plant life 287 aurate 396 bromide 290 carbonate 293 chlorate 291 chloride 290 chromate 385 cyanide 293 dichromate 386 ferricyanide 352 ferrocyanide 352 hydroxide 288 hydroxide, action of halogens 289 hypochlorite 289 iodide 290 manganate 381 nitrate 291 occurrence 287 permanganate 381 preparation 288 sulphate 294
An Elementary Study of Chemistry
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It was the shade of purple called mauve, and the chief agent in its production was bichromate of potash.
Scientific American Supplement, No. 470, January 3, 1885
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Chromates and bichromates have a commercial advantage over tellurites, being lower in cost.
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Then, too, some other chemical, such as bichromate of potassium, or ammonium chloride, may be used instead of dilute sulphuric acid.
General Science
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The facility with which it reduces alkaline cupric, argentic, bismuthous, ferric, mercuric salts, indigo and potassic picrate and chromate solutions has been utilized for the preparation of several ready methods for its determination.
Scientific American Supplement, No. 611, September 17, 1887
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To justify its name, should be a chromate of strontia, a compound very slightly soluble in water, and not more stable than the zinc chromate.
Field's Chromatography or Treatise on Colours and Pigments as Used by Artists
