bichromate


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  • noun

Synonyms for bichromate

a salt of the hypothetical dichromic acid

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References in periodicals archive ?
When creating the works in this show, Azeroual said he worked with "ultraviolet-sensitive emulsion, made of pigments of the desired tint, Arabic gum and potassium bichromate.
Caption: "The Flatiron", 1904 by Edward Steichen Gum bichromate over platinum print.
The resulting effects are visually similar to the soft-focus and richly textured carbon and gum bichromate prints produced at the end of the 19th century by pictorialist photographers such as Robert Demachy (1859-1936), Frank Eugene (1865-1936), and Anne Brigman (1869-1950), who enlisted painterly techniques to elevate the medium of photography into the realm of fine art.
Along with Hans Watzek and Hugo Henneberg, he experimented with the Lumiere auto-chrome process, as well as with gum bichromate printing, in which the contrast of light can be regulated to dissolve the clarity of the image and alter its luminosity.
All of these prints are handmade using traditional and very time-consuming methods--such as platinum, gum bichromate, gum over platinum, bromoil and oil print processes--each requiring the skills of an accomplished photographer and artist.
The concentration of VFA was determined with gas-liquid chromatography (Kochanov and Tulupov 1979); the concentration of cellulose after removal of lignin, hemicelluloses, and other substances was determined by oxidation with bichromate potassium in sulphoacid solution to carbonic acid and water.
The original Osmose patents described a preservative process using sodium fluoride, potassium bichromate, sodium arsenate, and dinitrophenol.
Those compounds include ammonia, ammonium salt4 alkylamine and/or one of their salts, hydroxylamine and/or their salts, hydrogen halide, acetoacetate, malonate, bromosuccinimide, pyridinium bromide, dioxane perbromide, permanganate, bichromate, chromate, selenium dioxide, alkali sulfite or ammonium sulfite, alkali or ammonium hydrogen sulfite or disulfite, or a thio compound and also ozone.
Imported basic materials are mainly chemicals not yet produced in the country such as soda ash, sodium bichromate, aluminum hydroxide, sodium sulfate, etc.