{"id":8869,"date":"2025-09-11T10:17:38","date_gmt":"2025-09-11T10:17:38","guid":{"rendered":"https:\/\/changhongchemical.com\/?p=8869"},"modified":"2026-04-27T11:16:01","modified_gmt":"2026-04-27T11:16:01","slug":"factors-affecting-pigment-color","status":"publish","type":"post","link":"https:\/\/changhongchemical.com\/pt\/factors-affecting-pigment-color\/","title":{"rendered":"Fatores que afetam a cor do pigmento"},"content":{"rendered":"<h1><strong>Fatores que afetam a cor do pigmento<\/strong><\/h1>\r\n<strong>\u00a0<\/strong>\r\n\r\nDiversos fatores influenciam a cor do pigmento, entre os quais a estrutura qu\u00edmica, a forma de cristal e o tratamento de superf\u00edcie s\u00e3o fatores decisivos que afetam a cor e as propriedades secund\u00e1rias. A cor de um pigmento \u00e9 determinada principalmente por sua estrutura qu\u00edmica. Entretanto, o tipo de forma de cristal, o formato, o tamanho da part\u00edcula e o tratamento de superf\u00edcie tamb\u00e9m podem alterar sua cor. Por exemplo, entre os azuis de ftalocianina, a forma de cristal \u03b1 exibe uma tonalidade vermelha, a forma de cristal \u03b2 exibe uma tonalidade verde e a forma de cristal \u03b5 produz um pigmento azul de ftalocianina com uma tonalidade mais vermelha do que a forma \u03b1. As propriedades secund\u00e1rias dos pigmentos - como estabilidade do cristal, resist\u00eancia \u00e0 luz e \u00e0s intemp\u00e9ries, poder de cobertura e transpar\u00eancia, poder de tingimento, brilho, reologia, dispersibilidade, resist\u00eancia ao calor e resist\u00eancia qu\u00edmica - s\u00e3o cada vez mais importantes na diferencia\u00e7\u00e3o e segmenta\u00e7\u00e3o do mercado.\r\n\r\n<strong>\u00a0<\/strong>\r\n\r\n<strong>\u00a0<\/strong>\r\n\r\n<strong>Estrutura qu\u00edmica<\/strong>\r\n\r\n&nbsp;\r\n\r\nCom base na estrutura qu\u00edmica geral, os pigmentos podem ser categorizados em pigmentos inorg\u00e2nicos, pigmentos org\u00e2nicos e pigmentos de efeito.\r\n\r\n<strong><b>\u00a0<\/b><\/strong>\r\n\r\n<strong>1) Pigmentos inorg\u00e2nicos:<\/strong>Classificados por estrutura qu\u00edmica, eles incluem di\u00f3xido de tit\u00e2nio, negro de fumo, s\u00e9rie de \u00f3xidos de ferro, s\u00e9rie de cromato de chumbo, s\u00e9rie de \u00f3xidos de cromo e c\u00e1dmio, azul ultramarino, vanadato de bismuto e pigmentos inorg\u00e2nicos compostos.\r\n\r\n<img decoding=\"async\" class=\"alignnone size-full wp-image-8870\" src=\"https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/1-5.webp\" alt=\"\" width=\"3462\" height=\"1417\" srcset=\"https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/1-5.webp 3462w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/1-5-768x314.webp 768w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/1-5-1536x629.webp 1536w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/1-5-2048x838.webp 2048w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/1-5-18x7.webp 18w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/1-5-1280x524.webp 1280w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/1-5-600x246.webp 600w\" sizes=\"(max-width: 3462px) 100vw, 3462px\" \/>\r\n\r\n<strong>2) Pigmentos org\u00e2nicos: <\/strong>Os pigmentos org\u00e2nicos s\u00e3o amplamente categorizados por estrutura qu\u00edmica em pigmentos azo, pigmentos polic\u00edclicos e pigmentos de complexos met\u00e1licos. Os pigmentos azo s\u00e3o predominantemente pigmentos org\u00e2nicos tradicionais com baixa resist\u00eancia \u00e0 cor, embora existam exce\u00e7\u00f5es, como a benzimidazolona. Os pigmentos de condensa\u00e7\u00e3o diazo, entretanto, pertencem \u00e0 categoria de pigmentos org\u00e2nicos de alto desempenho. Os pigmentos polic\u00edclicos e de complexos met\u00e1licos representam pigmentos org\u00e2nicos de alto desempenho com excelentes propriedades de resist\u00eancia e solidez da cor.\r\n\r\n&nbsp;\r\n\r\n<strong>3) Pigmentos de efeito:<\/strong> P\u00f3 de alum\u00ednio, p\u00f3 de cobre, alum\u00ednio met\u00e1lico, mica natural, mica sint\u00e9tica, flocos de vidro, oxicloreto de bismuto, flocos de grafite, cores estruturais de pol\u00edmeros e pigmentos que mudam de cor, entre outros.\r\n\r\n<img decoding=\"async\" class=\"alignnone size-full wp-image-8871\" src=\"https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/2-5.webp\" alt=\"\" width=\"3462\" height=\"2084\" srcset=\"https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/2-5.webp 3462w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/2-5-768x462.webp 768w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/2-5-1536x925.webp 1536w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/2-5-2048x1233.webp 2048w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/2-5-18x12.webp 18w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/2-5-1196x720.webp 1196w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/2-5-600x361.webp 600w\" sizes=\"(max-width: 3462px) 100vw, 3462px\" \/>\r\n\r\n<strong>Cristal e tratamento de superf\u00edcie<\/strong>\r\n\r\n<strong>\u00a0<\/strong>\r\n\r\nO tamanho da part\u00edcula, a distribui\u00e7\u00e3o do tamanho, o formato do cristal, a estrutura do cristal e a cristalinidade dos cristais do pigmento influenciam o desempenho da cor e as propriedades secund\u00e1rias. Os p\u00f3s apresentam estruturas cristalinas ou amorfas, enquanto os pigmentos sempre existem na forma cristalina. Os cristais de pigmento representam as menores part\u00edculas de pigmento, consistindo de \u00e1tomos ou mol\u00e9culas organizadas e montadas em padr\u00f5es espec\u00edficos. Suas formas e microestruturas distintas podem ser observadas por meio de microscopia eletr\u00f4nica.\r\n\r\n<img decoding=\"async\" class=\"alignnone size-full wp-image-8872\" src=\"https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/3-3.webp\" alt=\"\" width=\"3462\" height=\"2084\" srcset=\"https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/3-3.webp 3462w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/3-3-768x462.webp 768w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/3-3-1536x925.webp 1536w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/3-3-2048x1233.webp 2048w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/3-3-18x12.webp 18w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/3-3-1196x720.webp 1196w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/3-3-600x361.webp 600w\" sizes=\"(max-width: 3462px) 100vw, 3462px\" \/>The smallest particles present in pigment dispersions are called primary particles, with diameters ranging from approximately 0.05 to 1 \u03bcm. They exhibit various shapes such as cubes, spheres, rods, and needles.\r\n\r\n&nbsp;\r\n\r\nDue to their high surface energy, primary particles exhibit a strong tendency to spontaneously aggregate and reduce surface energy. They typically form tightly structured aggregates through random edge-to-edge or face-to-face bonding. These aggregates have larger diameters than primary particles, generally ranging from 1 to 10 \u03bcm. During filtration and drying processes in pigment manufacturing, primary particles and aggregates, or aggregates themselves, agglomerate to form larger, more loosely structured agglomerates with particle sizes exceeding 10\u03bcm.\r\n\r\n<img decoding=\"async\" class=\"alignnone size-full wp-image-8873\" src=\"https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/4-3.webp\" alt=\"\" width=\"3462\" height=\"1021\" srcset=\"https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/4-3.webp 3462w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/4-3-768x226.webp 768w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/4-3-1536x453.webp 1536w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/4-3-2048x604.webp 2048w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/4-3-18x5.webp 18w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/4-3-1280x377.webp 1280w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/4-3-600x177.webp 600w\" sizes=\"(max-width: 3462px) 100vw, 3462px\" \/>\r\n\r\nAs caracter\u00edsticas do cristal do pigmento normalmente se manifestam por meio das seguintes propriedades, cada uma exercendo graus variados de influ\u00eancia no desempenho do pigmento. O tamanho, a forma e a distribui\u00e7\u00e3o do tamanho das part\u00edculas exercem efeitos particularmente significativos sobre as propriedades do pigmento.\r\n<ul>\r\n \t<li>Tamanho da part\u00edcula Geralmente pequeno, medido em micr\u00f4metros (\u03bcm).<\/li>\r\n \t<li>Distribui\u00e7\u00e3o do tamanho das part\u00edculas, comumente medida por par\u00e2metros como D10, D50 e D90. Por exemplo, um D50 de 20\u03bcm indica que 50% das part\u00edculas de pigmento t\u00eam um di\u00e2metro m\u00e9dio de 20\u03bcm.<\/li>\r\n \t<li>Forma da part\u00edcula de cristal, como acicular, esf\u00e9rica, c\u00fabica ou outras formas.<\/li>\r\n \t<li>Estrutura cristalina: Um \u00fanico pigmento pode apresentar v\u00e1rias formas de cristal. Por exemplo, o azul de ftalocianina tem as formas \u03b1, \u03b2 e \u03b5, enquanto o di\u00f3xido de tit\u00e2nio existe como anatase, rutilo e brookita. As diferentes estruturas cristalinas produzem propriedades de cor e caracter\u00edsticas secund\u00e1rias variadas.<\/li>\r\n \t<li>A cristalinidade afeta principalmente a solidez da cor. O aumento da cristalinidade melhora a resist\u00eancia \u00e0 luz, a resist\u00eancia \u00e0s intemp\u00e9ries e a resist\u00eancia ao calor de um pigmento, al\u00e9m de melhorar suas propriedades reol\u00f3gicas, a resist\u00eancia a solventes e a resist\u00eancia ao sangramento da cor.<\/li>\r\n<\/ul>\r\n&nbsp;\r\n\r\nO tratamento de superf\u00edcie \u00e9 um processo e uma tecnologia essenciais no processamento de pigmentos. A principal fun\u00e7\u00e3o do tratamento de superf\u00edcie \u00e9 alterar a polaridade da superf\u00edcie da part\u00edcula, garantindo uma boa compatibilidade entre o pigmento e o meio de aplica\u00e7\u00e3o. Isso melhora as propriedades de aplica\u00e7\u00e3o, como dispers\u00e3o, reologia, resist\u00eancia e estabilidade do sistema de dispers\u00e3o. O mesmo pigmento pode ser processado por meio de diferentes tratamentos de superf\u00edcie para produzir tipos de produtos com propriedades de aplica\u00e7\u00e3o espec\u00edficas, como f\u00e1cil dispers\u00e3o, antiflocula\u00e7\u00e3o, alto poder de cobertura ou alta transpar\u00eancia, bem como adequa\u00e7\u00e3o para aplica\u00e7\u00f5es \u00e0 base de solvente ou \u00e0 base de \u00e1gua.\r\n\r\n&nbsp;\r\n\r\n<strong>O efeito do tamanho da part\u00edcula nos pigmentos<\/strong>\r\n\r\n<strong>\u00a0<\/strong>\r\n\r\nOs tamanhos das part\u00edculas de pigmentos com estruturas diferentes tamb\u00e9m variam muito. Em geral, os pigmentos inorg\u00e2nicos t\u00eam tamanhos de part\u00edculas maiores do que os pigmentos org\u00e2nicos. Entre os pigmentos inorg\u00e2nicos, o negro de fumo tem part\u00edculas muito pequenas, menores at\u00e9 do que alguns pigmentos org\u00e2nicos, enquanto o di\u00f3xido de tit\u00e2nio e os \u00f3xidos de ferro t\u00eam part\u00edculas maiores. O tamanho da part\u00edcula do \u00f3xido de ferro vermelho pode chegar a dezenas de vezes o do di\u00f3xido de tit\u00e2nio.\r\n\r\n<strong><img decoding=\"async\" class=\"alignnone size-full wp-image-8874\" src=\"https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/5-1.webp\" alt=\"\" width=\"3462\" height=\"2084\" srcset=\"https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/5-1.webp 3462w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/5-1-768x462.webp 768w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/5-1-1536x925.webp 1536w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/5-1-2048x1233.webp 2048w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/5-1-18x12.webp 18w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/5-1-1196x720.webp 1196w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/5-1-600x361.webp 600w\" sizes=\"(max-width: 3462px) 100vw, 3462px\" \/>Efeito do tamanho da part\u00edcula na tonalidade<\/strong>\r\n\r\nA tonalidade dos pigmentos com estruturas qu\u00edmicas id\u00eanticas varia de acordo com o tamanho da part\u00edcula. Para um determinado pigmento, o \u00e2ngulo de cor aumenta \u00e0 medida que o tamanho da part\u00edcula diminui e diminui \u00e0 medida que o tamanho da part\u00edcula aumenta. Quando o tamanho da part\u00edcula de um pigmento espec\u00edfico diminui, sua tonalidade se desloca no sentido anti-hor\u00e1rio no c\u00edrculo de cores. Por outro lado, quando o tamanho da part\u00edcula aumenta, a tonalidade se desloca em dire\u00e7\u00e3o \u00e0s tonalidades adjacentes no sentido anti-hor\u00e1rio.\r\n\r\n<strong>\u00a0<\/strong>\r\n\r\n<strong>Efeito do tamanho da part\u00edcula na \u00e1rea de superf\u00edcie e nas propriedades<\/strong>\r\n\r\nQuanto menor for o tamanho da part\u00edcula do pigmento, maior ser\u00e1 sua \u00e1rea de superf\u00edcie espec\u00edfica. As part\u00edculas menores apresentam maior capacidade de adsor\u00e7\u00e3o e maior viscosidade no meio, exigindo naturalmente maiores quantidades de dispersantes para dispers\u00e3o e redu\u00e7\u00e3o da viscosidade. Tamanhos diferentes de part\u00edculas do mesmo pigmento apresentam caracter\u00edsticas distintas de satura\u00e7\u00e3o de cor, reologia, transpar\u00eancia ou poder de cobertura, poder de tingimento e resist\u00eancia a intemp\u00e9ries.\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td width=\"189\">\r\n<p style=\"text-align: center;\"><strong>Tamanho de part\u00edcula pequeno<\/strong><\/p>\r\n<\/td>\r\n<td style=\"text-align: center;\" width=\"189\"><strong>Desempenho<\/strong><\/td>\r\n<td style=\"text-align: center;\" width=\"189\"><strong>Tamanho de part\u00edcula grande<\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"text-align: center;\" width=\"189\">Alta transpar\u00eancia<\/td>\r\n<td style=\"text-align: center;\" width=\"189\">Transpar\u00eancia\/Opacidade<\/td>\r\n<td width=\"189\">\r\n<p style=\"text-align: center;\">Alta cobertura<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"text-align: center;\" width=\"189\">Alta<\/td>\r\n<td style=\"text-align: center;\" width=\"189\">For\u00e7a de colora\u00e7\u00e3o<\/td>\r\n<td width=\"189\">\r\n<p style=\"text-align: center;\">Baixa<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td width=\"189\">\r\n<p style=\"text-align: center;\">Ruim<\/p>\r\n<\/td>\r\n<td style=\"text-align: center;\" width=\"189\">Reologia<\/td>\r\n<td width=\"189\">\r\n<p style=\"text-align: center;\">Bom<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"text-align: center;\" width=\"189\">Ruim<\/td>\r\n<td style=\"text-align: center;\" width=\"189\">Resist\u00eancia \u00e0s intemp\u00e9ries<\/td>\r\n<td width=\"189\">\r\n<p style=\"text-align: center;\">Bom<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td style=\"text-align: center;\" width=\"189\">Alta<\/td>\r\n<td style=\"text-align: center;\" width=\"189\">Satura\u00e7\u00e3o de cores<\/td>\r\n<td width=\"189\">\r\n<p style=\"text-align: center;\">Baixa<\/p>\r\n<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n&nbsp;\r\n\r\n<strong>O efeito da distribui\u00e7\u00e3o do tamanho das part\u00edculas na moagem e dispers\u00e3o<\/strong>\r\n\r\nA moagem e a dispers\u00e3o de pigmentos envolvem o uso de for\u00e7as de cisalhamento para quebrar aglomerados em agregados ou, idealmente, em part\u00edculas prim\u00e1rias, melhorando assim o desempenho. Simultaneamente, os pigmentos com distribui\u00e7\u00f5es de tamanho de part\u00edcula mais estreitas apresentam maior satura\u00e7\u00e3o de cor e for\u00e7a de tingimento. O diagrama de distribui\u00e7\u00e3o de tamanho de part\u00edcula abaixo, que mostra a fase \u03b2 do azul de ftalocianina em um sistema aquoso ap\u00f3s tempos de dispers\u00e3o variados, demonstra claramente que o aumento do tempo de moagem resulta em tamanhos m\u00e9dios de part\u00edcula progressivamente mais finos e em uma distribui\u00e7\u00e3o mais concentrada, aproximando-se de uma distribui\u00e7\u00e3o ideal. Entretanto, a moagem excessiva pode, \u00e0s vezes, levar a efeitos indesej\u00e1veis, como mudan\u00e7as de tonalidade e desempenho reduzido.\r\n\r\n&nbsp;\r\n\r\n<img decoding=\"async\" class=\"alignnone size-full wp-image-8875\" src=\"https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/6.webp\" alt=\"\" width=\"3462\" height=\"2084\" srcset=\"https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/6.webp 3462w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/6-768x462.webp 768w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/6-1536x925.webp 1536w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/6-2048x1233.webp 2048w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/6-18x12.webp 18w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/6-1196x720.webp 1196w, https:\/\/changhongchemical.com\/wp-content\/uploads\/2025\/09\/6-600x361.webp 600w\" sizes=\"(max-width: 3462px) 100vw, 3462px\" \/>Al\u00e9m dos fatores acima, o formato do cristal tamb\u00e9m influencia significativamente as propriedades reol\u00f3gicas dos pigmentos. Os agregados formados por part\u00edculas de pigmento com cristais em forma de placa ou de bast\u00e3o apresentam volumes maiores em compara\u00e7\u00e3o com os agregados de part\u00edculas com outros formatos de cristal. Sob condi\u00e7\u00f5es id\u00eanticas, esses agregados possuem viscosidade mais baixa e demonstram dispersibilidade relativamente superior no meio de dispers\u00e3o.\r\n\r\n&nbsp;\n\n\n<p><strong>Related product references:<\/strong> For formulation review or sourcing comparison, see <a href=\"https:\/\/changhongchemical.com\/product\/lcsorb-360-cas-103597-45-1\/\">CHLUMIUV 360<\/a> e <a href=\"https:\/\/changhongchemical.com\/product\/lcsorb-uv-1577-cas-147315-50-2\/\">CHLUMIUV UV-1577<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Numerous factors influence pigment color, among which chemical structure, crystal form, and surface treatment are decisive factors affecting both color and secondary properties. The color of a pigment is primarily determined by its chemical&#8230;<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-8869","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Factors Affecting Pigment Color<\/title>\n<meta name=\"description\" content=\"Numerous factors influence pigment color, among which chemical structure, crystal form, and surface treatment are decisive factors affecting both color and secondary properties. The color of a pigment is primarily determined by its chemical structure. However, the type of crystal form, shape, particle size, and surface treatment can also alter its color. For example, among phthalocyanine blues, the \u03b1 crystal form exhibits a red hue, the \u03b2 crystal form displays a green hue, and the \u03b5 crystal form produces a phthalocyanine blue pigment with a redder hue than the \u03b1 form. Secondary properties of pigments\u2014such as crystal stability, lightfastness and weather resistance, hiding power and transparency, tinting strength, gloss, rheology, dispersibility, heat resistance, and chemical resistance\u2014are increasingly significant in market differentiation and segmentation.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/changhongchemical.com\/pt\/factors-affecting-pigment-color\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Factors Affecting Pigment Color\" \/>\n<meta property=\"og:description\" content=\"Numerous factors influence pigment color, among which chemical structure, crystal form, and surface treatment are decisive factors affecting both color and secondary properties. The color of a pigment is primarily determined by its chemical structure. However, the type of crystal form, shape, particle size, and surface treatment can also alter its color. For example, among phthalocyanine blues, the \u03b1 crystal form exhibits a red hue, the \u03b2 crystal form displays a green hue, and the \u03b5 crystal form produces a phthalocyanine blue pigment with a redder hue than the \u03b1 form. 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A cor de um pigmento \u00e9 determinada principalmente por sua estrutura qu\u00edmica. Entretanto, o tipo de forma de cristal, o formato, o tamanho da part\u00edcula e o tratamento de superf\u00edcie tamb\u00e9m podem alterar sua cor. Por exemplo, entre os azuis de ftalocianina, a forma de cristal \u03b1 exibe uma tonalidade vermelha, a forma de cristal \u03b2 exibe uma tonalidade verde e a forma de cristal \u03b5 produz um pigmento azul de ftalocianina com uma tonalidade mais vermelha do que a forma \u03b1. 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