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Chrome yellow



Also known as Pigment Yellow, mainly composed of lead chromate pigments, its chemical composition PbCrO4, content of about 90% to 94%, the appearance of reddish yellow powder, monoclinic crystal form, a density of 5.1 ~ 6.0g / cm3, oil absorption of 13 ~ 27g / 100g, anti-permeability and excellent color, opacity living in shallow chrome yellow.
  And between the deep chrome yellow, light chrome yellow with equal brightness, better than the deep chrome yellow, acid resistance and light chrome yellow equal, better than deep chrome yellow, alkali-poor, good dispersion.
  Nitrates such as chrome yellow is lead nitrate, chromate, sodium dichromate, such as raw materials, strict control of the reaction conditions to form a stable monoclinic crystalline chrome yellow particles by filtration, drying and crushing. Mainly for paint, especially signpost coatings, inks and plastics.
 1, shade (with standard sample): Approximate ~ micro; 2, lead chromate content: ≥90.0%; 3, water-soluble content: ≤1.0%; 4, the aqueous extract PH value: 5.0-8.0; 5, water content: ≤1.0%; 6, hiding g / m2≤55; 7, tinting strength (with standard sample): ≥95%; 8, oil absorption: ≤22%; 9, sieve residue (320 mesh) ≤ 0.5%
 Chrome yellow and vibrant color and strong; low density, non-toxic, but some varieties of light, heat, solvent and migration resistance is often not as good as inorganic pigments. Endless varieties change color, colorful, but there is a certain intrinsic link between a variety of colors, each color can be used to determine the three parameters, namely hue, lightness and saturation. Color is black with each other mutually distinguishing features, feel decisions of each wavelength in chromatography and surface composition of the emitted light on the human eye can distinguish red, yellow, green, blue, purple and other features. Lightness, also known as luminance, expressed varying degrees of light and dark objects appearance characteristic value; comparing the brightness of colors, this color will have a bright and darker points. Saturation, also called the degree of color, showing characteristic values of the object appearance color shades, with bright colors and make Yinhui of difference. Hue, lightness and saturation form a three-dimensional, with the establishment of the scale of these three, you can use numbers to measure the color. Nature kaleidoscope of colors, but the most basic red, yellow, blue, called primary colors. 34 chrome yellow, also known as the main component is a lead chromate, the chemical composition of PbCrO4 content of about 90% to 94%, light red appearance of a yellow powder, monoclinic crystal form, density 5.16.0g / cm3 oil absorption to 1327g / 100g anti-permeability excellent color, chrome yellow living in hiding between shallow and deep chrome yellow chrome yellow, light chrome yellow with equal brightness, better than the deep chrome yellow, acid resistance and light chrome yellow equal, better than the deep chrome yellow, poor alkali resistance, good dispersion. Nitrates such as chrome yellow is lead nitrate, chromate, sodium dichromate, such as raw materials, strict control of the reaction conditions to form a stable monoclinic crystalline chrome yellow particles by filtration, drying and crushing. Mainly for paint, especially signpost coatings, inks and plastics. Physical and chemical properties (PhysicProperti1 shade (with standard sample) Approximate ~ micro; 2 lead chromate content: ≥90.0% 3 Water-soluble content: ≤1.0% 4 PH value of aqueous extract: 5.0-8.05 moisture content: ≤1.0% 6 cover force g / m2≤557 color strength (with standard sample) ≥95% 8 Oil absorption: ≤22% 9 sieve residue (320 mesh) ≤0.5% Characters: zinc chrome yellow powder, slight odor, bright color, melting point 258 ℃, 150 ℃ 20min maintaining stable heating can be dissolved in ethanol, acetone and other organic solvents in the case of concentrated sulfuric acid yellow, concentrated nitric acid, concentrated hydrochloric acid and dilute sodium hydroxide in the same color, light fastness, good heat resistance. uses : do ink, paint and other chrome yellow 110FDA ROHS specification structure number: CI56280 registration number: CA S№: appearance: yellow powder shade standard sample coloring power and standard product 100 + 5 heat resistance: ≥300 ° C Fast: The above six water soluble matter: ≤1.0%, please call One One two three hundred seventy-nine Ba Ba Wu Lusi performance: bright color, high tinting strength, high heat resistance, heat resistance, acid and alkali resistance no migration purposes: mainly used in plastics and coatings, paint color.

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