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Lemon Chrome Anuchrome L-21 is a monoclinic Lead Chromate material.
A special property is the high purity of shade and a cleaner Full Tone.
Lemon Chrome Anuchrome L-21 is highly stabilized and offers very good fastness to light and weathering and therefore is extensively used in topquality Synthetic Enamels.
CAS: 1344-37-2
MF: PbCrO4+PbSO4
MW: 576.07
EINECS: 215-693-7
Synonyms
Pigment yellow 34 (C.I. 77603;Lead sulfochromate yellow C.I. Pigment Yellow 34 [This substance is identified in the Colour Index by Colour Index Constitution Number, C.I. 77603.];lead sulfochromate;C. I. Pigment Yellow 34 (77600);Lead sulfochromate yellow;Blue15-4;KROLORYELLOW;LEADSULPHOCHROMATE
Special types for Inks and Plastics are available in Lemon Chrome Anuchrome L-21.
L-21 grade offers very good dispersion behaviour in Inks media and Polymeric Plastic Master Batch Manufacturing process.
Lemon Chrome Anuchrome L-21 is a chromium coordination entity comprising chromate and Lemon Chrome Anuchrome L-21 ions in a 1:1 ratio It has a role as a carcinogenic agent, a neurotoxin and a nephrotoxin.
Lemon Chrome Anuchrome L-21t is a lead coordination entity and a chromium coordination entity.
Lemon Chrome Anuchrome L-21 contains a lead(2+) and a chromate(2-).
Lemon Chrome Anuchrome L-21 is a monoclinic lead chromate greenish shade yellow pigment having good all round fastness properties.
Usefull where processing temperature is not more than 2000C.
Lemon Chrome Anuchrome L-21, with the CAS number 1344-37-2, is an inorganic pigment primarily composed of lead chromate.
Lemon Chrome Anuchrome L-21 is known for its bright yellow color and excellent opacity, making it widely used in various applications, including paints, coatings, plastics, and inks.
Lemon Chrome Anuchrome L-21 exhibits good lightfastness and weather resistance, which contributes to its durability in outdoor applications.
However, due to the presence of lead, itLemon Chrome Anuchrome L-21 poses health and environmental concerns, leading to regulatory restrictions in many regions.
Lemon Chrome Anuchrome L-21 is typically characterized by its high tinting strength and stability under heat, making it suitable for high-performance applications.
Additionally, Lemon Chrome Anuchrome L-21 is important to handle Pigment Yellow 34 with care, following safety guidelines to minimize exposure risks.
Overall, while Lemon Chrome Anuchrome L-21 offers desirable properties for coloration, the associated toxicity of lead compounds necessitates careful consideration in its use and disposal.
Lemon Chrome Anuchrome L-21 Chemical Properties
Density: 6[at 20℃]
Water Solubility: 36.8μg/L at 20℃
Solubility Product Constant (Ksp): pKsp: 12.55
CAS DataBase Reference: 1344-37-2(CAS DataBase Reference)
EPA Substance Registry System: Lemon Chrome Anuchrome L-21 (1344-37-2)
Bright yellow monoclinic crystalline system.
Density 6.12g/cm3, melting point 844℃.
Insoluble in water, oil and acetic acid, soluble in strong alkali and inorganic strong acid.
Lemon Chrome Anuchrome L-21 turns black when it meets hydrogen sulfide and orange-red when it meets alkali.
Strong coloring power and covering power.
Cannot be shared with Lidl and Ultramarine.
The color varies with the ratio of raw materials and preparation conditions, and there are five kinds of orange chrome yellow, deep chrome yellow, medium chrome yellow, light chrome yellow and lemon yellow.
Lemon Chrome Anuchrome L-21 [3PbCrO4-2PbSO4+Al(OH)3+AlPO4].
The content of lead chromate is not less than 50%, the color is bright, with green phase, the gloss of the paint is good, and the blue pigment can be matched into bright emerald green, the color is equivalent to 10G. the light resistance reaches 4~5 grade.
Heat resistance is 140℃.
Water permeability and oil permeability are grade 1.
Acid resistance and alkali resistance are grade 3.
Light chrome yellow (5PbCrO4-2PSO4+Al(OH)3+AlPO4].
The content of lead chromate is not less than 60%, with bright color, strong coloring power, good gloss of paint, and can be matched with blue pigment to form light green.
The content of lead chromate is higher than lemon chrome yellow.
The color is equivalent to 4G, and the light resistance is up to grade 5.
Heat resistance is 140℃.
Water permeability and oil permeability are grade 1.
Acid resistance and alkali resistance are grade 3.
Medium chrome yellow (PbCrO4+PbSO4).
Pure color, good gloss of paint, can be matched with blue pigment to form medium green.
The content of lead chromate is the highest, above 90%.
The color is equivalent to G.
The light resistance is 4~5 grade.
Heat resistance is 140℃. Water permeability and oil permeability are grade 1.
Acid resistance, alkali resistance is grade 3.
Deep chrome yellow (PbCrO4+PbCrO4-PbO).
Lead chromate 85%, with reddish tint, strong coloring power, color equivalent to GR.
Light resistance is grade 5. Heat resistance is 140℃. Water permeability and oil permeability are grade 3.
Orange chrome yellow (PbCrO4-PbO).
Lemon Chrome Anuchrome L-21 is alkaline lead chromate with PbCrO4 content not less than 55% and orange color.
The light resistance is good, up to 5~grade.
Heat resistance is 150℃. Water permeability and oil permeability are grade 1.
Acid resistance, alkali resistance is 3 levels.
Used In
Extensively used in top-quality Synthetic Enamels, Inks media and Polymeric Plastic Master Batch Manufacturing process
Paints
Printing Inks
Leather Pastes
Linoleum
PVC Leather Cloth
Paper Coating
Plastics
Lemon Chrome Anuchrome L-21 is a pigment used in camouflage oriented combinations as well as car paints and textiles.
