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Topics referred to by the same term
Chromate or chromat, and their derived terms, may refer to: Chromate and dichromate family of ions, including monochromate, dichromate, trichromate, and
Chromate
Chemical treatment of metals
Chromate conversion coating or alodine coating is a type of conversion coating used to passivate steel, aluminium, zinc, cadmium, copper, silver, titanium
Chromate_conversion_coating
Chromium(VI) anions
Chromate salts contain the chromate anion, CrO2−4. Dichromate salts contain the dichromate anion, Cr2O2−7. They are oxyanions of chromium in the +6 oxidation
Chromate_and_dichromate
Chemical compound
Zinc chromate, ZnCrO4, is a chemical compound, a salt containing the chromate anion, appearing as odorless yellow powder or yellow-green crystals, but
Zinc_chromate
Chemical compound
Potassium chromate is the inorganic compound with the formula K2CrO4. This yellow solid is the potassium salt of the chromate anion. It is a common laboratory
Potassium_chromate
Chemical compound
Barium chromate is an inorganic compound with the chemical formula BaCrO4. It is a yellow solid, an oxidizing agent that produces a green flame when heated
Barium_chromate
Chemical compound
Sodium chromate is the inorganic compound with the formula Na2CrO4. It is a yellow hygroscopic solid, which can form tetra-, hexa-, and decahydrates. It
Sodium_chromate
Chemical compound
Lead(II) chromate is an inorganic compound with the chemical formula PbCrO4. It is a bright yellow salt that is very poorly soluble in water. It occurs
Lead(II)_chromate
Chemical element with atomic number 24 (Cr)
nutrient. While chromium metal and Cr(III) ions are considered non-toxic, chromate and its derivatives, often called "hexavalent chromium", is toxic and carcinogenic
Chromium
Chemical compound
corresponding sodium salt. Alternatively, it can be also obtained from potassium chromate by roasting chromite ore with potassium hydroxide: FeCr2O4 + 2 KOH + 1
Potassium_dichromate
Chemical compound
Silver chromate is an inorganic compound with formula Ag2CrO4 which appears as distinctively coloured brown-red crystals. The compound is insoluble and
Silver_chromate
Chemical compound
Strontium chromate is an inorganic compound with the formula SrCrO4. Strontium chromate is prepared from strontium chloride and sodium chromate, or from
Strontium_chromate
Chemical compound
Ammonium chromate is a salt with the formula (NH4)2CrO4. It forms yellow, monoclinic crystals; made from ammonium hydroxide and ammonium dichromate; used
Ammonium_chromate
Painting by Georges Seurat
originally bright yellow zinc yellow (zinc chromate) to a brownish color is due to the chemical reaction of the chromate ions to orange-colored dichromate ions
A Sunday Afternoon on the Island of La Grande Jatte
A_Sunday_Afternoon_on_the_Island_of_La_Grande_Jatte
Chemical compound
Magnesium chromate is an inorganic compound with the chemical formula MgCrO4. It is a yellow, odorless, water-soluble salt. It is available commercially
Magnesium_chromate
Chemical compound
Beryllium chromate is a hypothetical inorganic compound, with the chemical formula of BeCrO4. It is predicted to have a certain bonding ability with noble
Beryllium_chromate
Chemical compound
Iron(III) chromate is the iron(III) salt of chromic acid with the chemical formula Fe2(CrO4)3. Iron(III) chromate was discovered by Samuel Hibbert-Ware
Iron(III)_chromate
Chemical compound
Caesium chromate or cesium chromate is an inorganic compound with the formula Cs2CrO4. It is a yellow crystalline solid that is the caesium salt of chromic
Caesium_chromate
Chromium in the +6 oxidation state
dichromate. Sodium chromate is converted into other hexavalent chromium compounds such as chromium trioxide and various salts of chromate and dichromate.
Hexavalent_chromium
Chemical compound
Calcium chromate is an inorganic compound with the formula CaCrO4, i.e. the chromate salt of calcium. It is a bright yellow solid which is normally found
Calcium_chromate
Chemical compound and pigment
consists of pure lead chromate (PbCrO4). The raw pigment precipitates as a fine solid upon mixing lead(II) salts and a source of chromate. Approximately 90
Chrome_yellow
Class of chemical compounds
A chromate ester is a chemical species that contains a chromium atom (symbol Cr) in a +6 oxidation state that is bonded to a oxide (O2-) and an alkoxide
Chromate_ester
Medical condition
allergenic. The carcinogenity of chromate dust has been documented since the late 19th century, when workers in a chromate dye company were found to exhibit
Chromium_toxicity
Color used on North American school buses
monoclinic lead(II) chromate ("chrome yellow") which had superior steel-protecting properties compared to other pigments. Due to lead chromate's toxicity, a result
School_bus_yellow
Inflammation of the skin due to contact with an allergen
Allergic contact dermatitis (ACD) is a form of contact dermatitis that is the manifestation of a type IV hypersensitivity (delayed hypersensitivity) response
Allergic_contact_dermatitis
Titration involving the silver ion
method, named after Karl Friedrich Mohr, potassium chromate is an indicator, giving red silver chromate after all chloride ions have reacted: 2Ag+ (aq) +
Argentometry
Chemical compound used to oxidize another substance in a chemical reaction
transfer (OAT) agent. Examples include MnO− 4 (permanganate), CrO2− 4 (chromate), OsO4 (osmium tetroxide), and especially ClO− 4 (perchlorate). Notice
Oxidizing_agent
Chemical compound
chloride and carbon monoxide: Cr 2O 3 + 3 Cl 2 + 3 C → 2 CrCl 3 + 3 CO Chromates salts form by the oxidation of chromium(III) oxide in the presence an
Chromium(III)_oxide
Physico-chemical processes contributing to protect a surface against oxidation
and thus protect the base alloy. Chromate conversion coating converts the surface aluminium to an aluminium chromate coating in the range of 0.00001–0
Passivation_(chemistry)
magnesium, etc. Oxidizers: lead dioxide, iron oxides, barium chromate, lead chromate, tin(IV) oxide, bismuth(III) oxide, barium sulfate (for high-temperature
Delay_composition
Chemical compound
Cadmium chromate is the inorganic compound with the formula CdCrO4. It is relevant to chromate conversion coating, which is used to passivate common metal
Cadmium_chromate
Wood preservative containing compounds of chromium, copper, and arsenic
Chromated copper arsenate (CCA) is a wood preservative containing compounds of chromium, copper, and arsenic, in various proportions. It is used to impregnate
Chromated_copper_arsenate
Chemical compound
traditional method is by the calcining of copper chromate: 2 CuCrO4 → 2 CuCrO3 + O2 Copper barium ammonium chromate is the most commonly used substance for production
Copper_chromite
equality conditions, the concentrations of the three species, chromate CrO2−4, hydrogen chromate HCrO−4 and dichromate Cr2O2−7 can be calculated, for various
Predominance_diagram
Index of chemical compounds with the same name
chromium(II) chromate Chromium trioxide (chromium(VI) oxide), CrO3 Chromium(VI) oxide peroxide, CrO5 Mixed valence species, such as Cr8O21 Chromate and dichromate
Chromium_oxide
Railway line in Shetland, Scotland
The Hagdale Chromate Railway was a 2 ft 6 in (762 mm) narrow-gauge railway on the Isle of Unst, in the Shetland Islands. Built in 1907, it connected the
Hagdale_Chromate_Railway
Chemical compound
Di-tert-butyl chromate is an alkoxide with the formula CrO2(OC(CH3)3)2. It forms red crystals at temperatures below −5 °C, above which it melts to give
Di-tert-butyl_chromate
Metal treatment process
anodizing and chromate conversion coating is the electrical conductivity of the films produced. Although both stable compounds, chromate conversion coating
Anodizing
Inorganic compound
material. It is crystallised around 30 to 35 degrees C Dichromate and chromate salts are oxidizing agents. For the tanning of leather, sodium dichromate
Sodium_dichromate
Ethylene polymerization catalyst
of the catalytic mechanism. The active catalyst is often depicted as a chromate ester bound to the silica surface. The mechanism for the polymerization
Phillips_catalyst
Chemical compounds containing chromium
change from yellow (chromate) to orange (dichromate), such as when an acid is added to a neutral solution of potassium chromate. At yet lower pH values
Chromium_compounds
Lead chromate mineral
Crocoite is a mineral consisting of lead chromate, PbCrO4, and crystallizing in the monoclinic crystal system. It is identical in composition with the
Crocoite
Chemical compound
triterpene lupeol was oxidized to lupenone: With tertiary alcohols, the chromate ester formed from PCC can isomerize via a [3,3]-sigmatropic reaction and
Pyridinium_chlorochromate
Preparatory coating put on materials before painting
important in the aircraft industry, which uses toxic zinc chromate primers and chromating to add the necessary adhesion properties. In addition, primer
Primer_(paint)
Ongoing environmental disaster in the US
the North Tarrytown Assembly in North Tarrytown, New York, released lead chromate and other painting, cleaning, and soldering chemicals into the river. Domestic
Pollution_of_the_Hudson_River
Plant used as spice
the turmeric with lead chromate: from farmers to merchants selling low-grade turmeric roots to "polishers" who added lead chromate for yellow color enhancement
Turmeric
Chemical compound
Nickel(II) chromate is an inorganic compound with the chemical formula (NiCrO4). It is red-brown in color and has a high heat tolerance. It is very slightly
Nickel(II)_chromate
Gradual destruction of materials by chemical reaction with its environment
to reduce the activity of the exposed surface, such as passivation and chromate conversion, can increase a material's corrosion resistance. However, some
Corrosion
Chemical compound
Europium(III) chromate is a chemical compound composed of europium, chromium and oxygen with europium in the +3 oxidation state, chromium in the +5 oxidation
Europium(III)_chromate
Chemical compound
reported. Chromium(III) sulfate are commonly obtained from the wastes of chromate oxidations of various organic compounds. Anthraquinone and quinone are
Chromium(III)_sulfate
Process of layering steel or iron with zinc to prevent rusting
there are gaps in the zinc coating. Additional electroplating such as a chromate conversion coating may be applied to provide further surface passivation
Galvanization
Chemical group (–C4H9) derived from butane
groups lack alpha-hydrogen atoms. This aspect stabilizes di-tert-butyl chromate. Otherwise alpha-H's are abstracted by Cr(VI). A tert-butyl (tBu) ether
Butyl_group
Mixture of concentrated sulfuric acid and dichromate
Hexavalent chromium compounds (including chromium trioxide, chromic acids, chromates, chlorochromates) are toxic and carcinogenic. Chromium trioxide and chromic
Chromic_acid
Banding resulting from chemical reactions
reactions have been used to study the phenomenon, and it seems quite general. Chromates, metal hydroxides, carbonates, and sulfides, formed with lead, copper
Liesegang_rings
Form of insidious localized corrosion in which a pit develops at the anode site
Reductants exert thus an antagonist effect with respect to the oxidants (chromate, nitrite) used as corrosion inhibitors to induce steel repassivation via
Pitting_corrosion
Type of metal coating
conversion coating processes for metal parts with industrial use include Chromate (aluminum, steel) Phosphate (steel) Bluing (steel) Black oxide (steel)
Conversion_coating
Oxidation of alcohol
tert-butyl chromate ((CH3)3CO)2CrO2), which is itself a good oxidant. For those structures with hydrogen alpha to the oxygen, the chromate esters degrade
Jones_oxidation
Chemical element with atomic number 83 (Bi)
as a replacement for barium chromate, which possesses a more greenish cast than the others. In comparison with lead chromate, it does not blacken due to
Bismuth
Human-caused environmental event in the US
University of California, Berkeley to name a panel of experts to form the Chromate Toxicity Review Committee. The California Office of Environmental Health
Hinkley groundwater contamination
Hinkley_groundwater_contamination
Systematic naming of chemical compounds
for copper(I) chromate, the Roman numeral indicates that copper ion is Cu+ and one can identify that the compound contains the chromate ion (CrO4)2−.
Chemical_nomenclature
Superfund site in Pennsylvania
treatment of wood, hazardous chemicals such as arsenic, benzene, copper chromate, creosote, dioxins, naphthalene, pentachlorophenol (PCPs), polycyclic aromatic
Havertown_Superfund
(PY37) CdS + ZnS. Chromium pigments Chrome yellow or crocoite (PY34): lead chromate (PbCrO4). Strontium yellow (PY32): SrCrO4. Barium Yellow (PY31) BaCrO4
List_of_inorganic_pigments
Type of quick release fastener
flash powders are often used.[citation needed] Manganese / barium chromate / lead chromate: Time-delay mix, used for sequencing. Gasless burning. RDX / nitrocellulose:
Pyrotechnic_fastener
Technique of electroplating
as well as bright dipping of copper alloys, chromic acid anodizing, and chromate conversion coating. A typical hexavalent chromium plating process is: Activation
Chrome_plating
[NH4]HCO3 Ammonium bisulfate – [NH4]HSO4 Ammonium bromide – NH4Br Ammonium chromate – [NH4]2CrO4 Ammonium cerium(IV) nitrate – [NH4]2[Ce(NO3)6] Ammonium cerium(IV)
List_of_inorganic_compounds
Material scientist and academic
that nanocoatings are a more effective and eco-friendlier substitute for chromate conversion coatings, as they need less metal pretreatment and are non-toxic
Jaime_C._Grunlan
Shade of blue (color)
cobalt chromate is sometimes marketed under the cerulean blue name but is darker and greener than the cobalt stannate version. The chromate makes excellent
Cerulean
Negatively charged polyatomic ion containing oxygen
reactions can occur. The case of the chromate ion provides a relatively simple example. In the predominance diagram for chromate, shown at the right, pCr stands
Oxyanion
Paint containing lead compounds as pigments
paint or lead-based paint is paint containing lead. As pigment, lead(II) chromate (PbCrO 4, "chrome yellow"), lead(II,IV) oxide (Pb 3O 4, "red lead"), and
Lead_paint
Chemical compound
compounds. Chromyl chloride can be prepared by the reaction of potassium chromate or potassium dichromate with hydrogen chloride in the presence of concentrated
Chromyl_chloride
Chemical reaction
compounds, e.g. of morphine. The reaction proceeds through the formation of a chromate ester (1) from nucleophilic attack of the chlorochromate by the allylic
Babler_oxidation
Chemical element with atomic number 50 (Sn)
replacement for lead(II) chromate with greater opacity, lightfastness, and weathering resistance than proposed organic lead chromate replacement pigments
Tin
American businessman and politician
product he trademarked Vici Kid. He died in office in 1903, possibly due to chromate poisoning from his years handling chromium to perfect his chrome tanning
Robert_H._Foerderer
Chemical compound
Faezeh; Mohandes, Fatemeh; Salavati-Niasari, Masoud (2013-06-01). "Silver chromate and silver dichromate nanostructures: Sonochemical synthesis, characterization
Silver_dichromate
Surface covering of metal on a conductor
and some variation of chromate. The most common mixed chromates include hexavalent iridescent, trivalent or black trivalent chromate. Used to protect steel
Plating
Medical condition
superimposed on nummular dermatitis. Studies have implicated nickel, cobalt, chromate, and fragrance as likely culprits. Xerosis, or dehydration of skin is also
Nummular_dermatitis
Biological process
degradation process of the cell walls. Applying preservatives, such as chromated copper arsenate (CCA) or borates, can protect wood from biological and
Wood_degradation
Metal alloy
of the refining-process. Zamak can be electroplated, wet-painted, and chromate-conversion-coated well. In the early 1930s, Morris Ashby in Britain had
Zamak
American environmental activist (born 1960)
United States in the Gulf of Mexico, citing the heavy presence of zinc chromate and hexavalent chromium on the ship. In spring of 2026, Brockovich started
Erin_Brockovich
Technique of protection of steel surfaces against corrosion
stearate even under extreme deformation of the part, such as in wire drawing. Chromate conversion coating Hot-dip galvanization Iron pillar of Delhi Jewelling
Phosphate_conversion_coating
Pyrotechnic device
are two main types of design. One uses a fuze strip (containing barium chromate and powdered zirconium metal in a ceramic paper) along the edge of the
Pyrotechnic_heat_source
Process of electroplating zinc onto steel
for the thinnest blue/clear passivates to 4 μm for the thickest black chromates. Additionally, electroplated zinc articles may receive a topcoat to further
Electrogalvanization
State of Nigeria
2018. Zamfara state has many natural resources, some are: Iron ore Gold Chromate Granite Clay Limestone chamovita Quartz Kaolin Tertiary institutions in
Zamfara_State
Spice from Cinnamomum trees
with cinnamon from Negasmart, both of Ecuador) was adulterated with lead chromate. The two suppliers are now Red Listed to forestall future adulteration
Cinnamon
Variation of solubility of assorted substances
(NH4)2PtCl6 0.289 0.374 0.499 0.637 0.815 1.44 2.16 2.61 3.36 Ammonium chromate (NH4)2CrO4 25 29.2 34 39.3 45.3 51.9 59.0 71.2 76.1 Ammonium dichromate
Solubility_table
the early 1970s red, yellow, orange and green lead-based pigments (lead chromate) were added to a limited number of decorative coloured gloss and wall paints
Lead-based paint in the United Kingdom
Lead-based_paint_in_the_United_Kingdom
Chemical compound containing an oxyanion or mixed oxide of tungsten
when reduced by most organic materials. Unlike chromate, tungstate is not a good oxidizer, but like chromate, solutions of tungstate condense to give the
Tungstate
Chemical compound and inorganic pigment
can be made by treating a lead(II) salt with an alkaline solution of a chromate or by treating chrome yellow (PbCrO4) with strongly basic solution. It
Chrome_orange
Class of minerals that include the sulfate ion
secondary minerals in the oxidizing zone of sulfide mineral deposits. The chromate and manganate minerals have a similar structure and are often included
Sulfate_mineral
Italian biologist and pathologist (1843–1926)
chromate precipitate, as a reaction product, selectively stains only some cellular components randomly, sparing other cell parts. The silver chromate
Camillo_Golgi
Chemical compound
in lead paints, such as chrome yellow (lead(II) chromate), chrome orange (lead(II) hydroxide chromate) and similar lead compounds. These pigments were
Lead(II)_nitrate
Chemical compound
Perchlorate, a similar ion with a chlorine(VII) center Permanganate index Chromate, which is isoelectronic with permanganate Pertechnetate "permanganate"
Permanganate
Electrochemical process
Aluminium, cast alloys (other than silicon type); cadmium, plated and chromate −0.95 Hot-dip-zinc plate; galvanized steel −1.20 Zinc, wrought; zinc-base
Galvanic_corrosion
Scientific test to study stress corrosion cracking
carbonates, hydroxides, or nitrates, or liquid ammonia 10−6 Magnesium alloys - chromate/chloride solutions 10−5 Stainless steel - chloride solutions 10−6 Stainless
Slow_strain_rate_testing
Hide tanned using a Native American method
Some leather sold as "buckskin" may now be sheepskin tanned with modern chromate tanning chemicals and dyed to resemble real buckskin. Traditionally, Native
Buckskin_(leather)
Mineral
link these chains to form the central layer of the slab. The only other chromate-iodate mineral is dietzeite, Ca(IO3)2(CrO4)(H2O). Dietzeite and george-ericksenite
George-ericksenite
American WWII medium bomber
chief painted all the aircraft's flak hole patches with bright yellow zinc chromate primer. By the end of the war, this aircraft had completed over 300 missions
North_American_B-25_Mitchell
Chemical compound
inorganic compound with the formula (NH4)2Cr2O7. In this compound, as in all chromates and dichromates, chromium is in a +6 oxidation state, commonly known as
Ammonium_dichromate
Chemical compound
Promecarb Propoxur Inorganic compounds Aluminium phosphide Boric acid Chromated copper arsenate Copper(II) arsenate Copper(I) cyanide Cryolite Diatomaceous
Novaluron
Chemical compound
A third mineral form of calcium iodate is dietzeite, a salt containing chromate with the formula Ca2(IO3)2CrO4. These minerals are the most common compounds
Calcium_iodate
CHROMATE
CHROMATE
CHROMATE
CHROMATE
Boy/Male
Tamil
Chanchaladwala | சஂசலாதவாலா
Glittering tail suspended above the head
Girl/Female
Gujarati, Hindu, Indian, Kannada, Malayalam
Goddess Durga
Girl/Female
African, Arabic, Muslim, Swahili
Moon-faced; Beautiful; Pretty
Boy/Male
Hindu, Indian, Marathi, Punjabi, Sikh
Fame
Boy/Male
English
Brit. A native of Brittany: (France) or Britain:.
Boy/Male
Hindu, Indian
A Jewel that Illuminates
Girl/Female
Hindu
Happy
Boy/Male
Indian
Beautiful, A narrator of Hadith, Pleasant, Fond
Girl/Female
Arabic, Muslim
Bred Up Like Princess
Surname or Lastname
English
English : topographic name from Middle English broke ‘brook’ + weye ‘way’, ‘road’.
CHROMATE
CHROMATE
CHROMATE
CHROMATE
CHROMATE
n.
Lead chromate occuring in crystals of a bright hyacinth red color; -- called also red lead ore.
n.
A salt of chromic acid.
n.
A mineral of a red, or brownish or yellowish red color. It is a chromate of lead; -- called also phoenicocroite.
n.
Chromate of copper and lead, of various shades of green.
n.
A comparatively rare element occurring most abundantly in the mineral chromite. Atomic weight 52.5. Symbol Cr. When isolated it is a hard, brittle, grayish white metal, fusible with difficulty. Its chief commercial importance is for its compounds, as potassium chromate, lead chromate, etc., which are brilliantly colored and are used dyeing and calico printing. Called also chrome.