{"id":2098,"date":"2025-12-29T15:39:08","date_gmt":"2025-12-29T07:39:08","guid":{"rendered":"http:\/\/www.jmchemi.com\/?post_type=product&p=2098"},"modified":"2026-01-22T14:31:41","modified_gmt":"2026-01-22T06:31:41","slug":"xylene-xylol","status":"publish","type":"product","link":"https:\/\/www.jmchemi.com\/zh\/product\/xylene-xylol\/","title":{"rendered":"\u4e8c\u7532\u82ef\uff08\u4e8c\u7532\u82ef\u9187\uff09CAS No.133-20-7"},"content":{"rendered":"

It is a mixture of three structural isomers:\u00a0ortho-xylene (o-xylene),\u00a0meta-xylene (m-xylene), and\u00a0para-xylene (p-xylene), each with distinct industrial applications. Classified as a\u00a0Class 3 Flammable Liquid\u00a0(UN number 1307), xylene is also labeled as a harmful substance due to its toxicological effects on the human body.<\/p>\n

Basic Information<\/h3>\n\n\n\n\n\n\n\n\n\n
Item<\/td>\nDetails<\/td>\n<\/tr>\n
Chemical Formula<\/td>\n(C8<\/sub>H10)\u00a0(isomer mixture)<\/td>\n<\/tr>\n
\u5206\u5b50\u91cf<\/td>\n106.17 g\/mol<\/td>\n<\/tr>\n
Appearance<\/td>\nColorless transparent liquid; sweet aromatic odor<\/td>\n<\/tr>\n
Key Physical Properties<\/td>\nMelting point: -47.4\u00b0C (mixed isomers); boiling point: 138\u2013144\u00b0C; density: 0.86\u20130.87 g\/cm\u00b3 (20\u00b0C); volatile; insoluble in water, miscible with ethanol, ether, acetone, and most organic solvents<\/td>\n<\/tr>\n
Purity Grades<\/td>\nIndustrial grade (\u226598.5% mixed isomers); high-purity grade (\u226599.9% single isomer for chemical synthesis); solvent grade (for coatings and printing)<\/td>\n<\/tr>\n
Production Method<\/td>\nPrimarily derived from petroleum refining (catalytic reforming of naphtha) and coal tar distillation; single isomers are separated via fractional distillation or crystallization<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Main Applications<\/h3>\n

Chemical Synthesis:<\/strong> Single isomers are critical raw materials:<\/p>\n

p-xylene:<\/strong> Produces terephthalic acid (TPA) and purified terephthalic acid (PTA), core components of polyester fibers and plastic bottles.<\/p>\n

o-xylene:<\/strong> Synthesizes phthalic anhydride, used in plasticizers, resins, and dyes.<\/p>\n

m-xylene:<\/strong> Manufactures isophthalic acid, for alkyd resins and coatings.<\/p>\n

Industrial Solvent:<\/strong> Mixed xylene is a universal solvent in paints, coatings, adhesives, printing inks, and rubber processing; it dissolves resins, pigments, and organic polymers effectively.<\/p>\n

Petrochemical Industry:<\/strong> Blended into gasoline to improve octane number and combustion efficiency.<\/p>\n

Laboratory & Medical:<\/strong> Used as a solvent for sample extraction, purification, and histology (tissue processing in pathology labs).<\/p>","protected":false},"excerpt":{"rendered":"

Xylene, with the chemical formula\u00a0(C8<\/sub>H10)\u00a0and CAS number\u00a01330-20-7\u00a0(for the mixed isomers), is a colorless, flammable liquid with a characteristic sweet aromatic odor. It is a mixture of three structural isomers:\u00a0ortho-xylene (o-xylene),\u00a0meta-xylene (m-xylene), and\u00a0para-xylene (p-xylene), each with distinct industrial applications. Classified as a\u00a0Class 3 Flammable Liquid\u00a0(UN number 1307), xylene is also labeled as a harmful substance due to its toxicological effects on the human body.<\/p>","protected":false},"featured_media":3117,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"%%post_title%%","_seopress_titles_desc":"%%post_excerpt%%","_seopress_robots_index":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_brand":[],"product_cat":[60],"product_tag":[],"class_list":{"0":"post-2098","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-xylene","7":"desktop-align-center","8":"tablet-align-left","9":"mobile-align-left","10":"ast-product-gallery-layout-horizontal-slider","11":"ast-product-gallery-with-no-image","12":"ast-product-tabs-layout-horizontal","14":"first","15":"instock","16":"shipping-taxable","17":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.jmchemi.com\/zh\/wp-json\/wp\/v2\/product\/2098","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jmchemi.com\/zh\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.jmchemi.com\/zh\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jmchemi.com\/zh\/wp-json\/wp\/v2\/comments?post=2098"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jmchemi.com\/zh\/wp-json\/wp\/v2\/media\/3117"}],"wp:attachment":[{"href":"https:\/\/www.jmchemi.com\/zh\/wp-json\/wp\/v2\/media?parent=2098"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.jmchemi.com\/zh\/wp-json\/wp\/v2\/product_brand?post=2098"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.jmchemi.com\/zh\/wp-json\/wp\/v2\/product_cat?post=2098"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.jmchemi.com\/zh\/wp-json\/wp\/v2\/product_tag?post=2098"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}