{"id":4885,"date":"2021-12-08T12:34:41","date_gmt":"2021-12-08T12:34:41","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=4885"},"modified":"2026-04-28T10:41:52","modified_gmt":"2026-04-28T10:41:52","slug":"cpba-and-dmf-no-together","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/hu\/cpba-and-dmf-no-together\/","title":{"rendered":"Az m-CPBA \u00e9s a DMF reakci\u00f3ja robban\u00e1svesz\u00e9lyes."},"content":{"rendered":"<!-- lc-qa-start -->\n<p><strong>Quick answer:<\/strong> Surface-control additives are usually selected by defect type, compatibility, and dosage window. The strongest commercial choice is the one that fixes the real problem without creating a new one.<\/p>\n<!-- lc-qa-end -->\n\n\n<p>A DMF az egyik legsz\u00e9lesebb k\u00f6rben haszn\u00e1lt old\u00f3szer a szerves szint\u00e9zisben, \u00e9s univerz\u00e1lis old\u00f3szerk\u00e9nt is ismert. Ma egy reakci\u00f3esetet fogok megosztani veletek. Az m-CPBA \u00e9s a DMF egy\u00fcttes haszn\u00e1lata potenci\u00e1lisan vesz\u00e9lyes is lehet. Az m-CPBA, m\u00e1s n\u00e9ven m-kl\u00f3roperoxi-benzoesav, a szerves k\u00e9mi\u00e1ban nagyon gyakran haszn\u00e1lt szerves oxid\u00e1l\u00f3szer egyik t\u00edpusa. Relat\u00edv \u00e9rtelemben viszonylag biztons\u00e1gos. A k\u00e9mia ter\u00fclete azonban tele van ismeretlenekkel. A ma megosztott irodalomban jelentett baleset az m-CPBA \u00e9s a DMF vegyes alkalmaz\u00e1s\u00e1val kapcsolatos, \u00e9s k\u00f6zvetlen\u00fcl a k\u00f6vetkez\u0151 k\u00e9miai \u00e1talakul\u00e1sokhoz kapcsol\u00f3dik.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"387\" height=\"92\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/12\/1.jpg\" alt=\"\" class=\"wp-image-4886\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/12\/1.jpg 387w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/12\/1-300x71.jpg 300w\" sizes=\"(max-width: 387px) 100vw, 387px\" \/><\/figure>\n\n\n\n<p>A jap\u00e1n Fujisawa Pharmaceutical Company szintetiz\u00e1torai m-CPBA-t haszn\u00e1ltak a k\u00e9n szulfoxidd\u00e1 oxid\u00e1l\u00e1s\u00e1ra DMF old\u00f3szerrel k\u00eds\u00e9rleti l\u00e9pt\u00e9kben. A szintetiz\u00e1torok el\u0151sz\u00f6r 6,3 liter DMF-et \u00e9s 11,0 kg m-CPBA-t kevertek \u00f6ssze, majd a kett\u0151t 2 \u00f3r\u00e1n \u00e1t kevertett\u00e9k. , A rendszerben oldhatatlan anyag k\u00e9pz\u0151dik, majd sz\u0171r\u00e9ssel tiszta oldatot kapunk, \u00e9s a tiszta oldatot hozz\u00e1adjuk a szerves reakci\u00f3oldathoz. Amikor a csepegtet\u00e9si folyamatot 1 \u00f3r\u00e1n kereszt\u00fcl v\u00e9gezz\u00fck, az m-CPBA DMF-oldata hirtelen felemelkedik, \u00e9s g\u00e1z szabadul fel. , majd hirtelen felrobban. A cikk szerz\u0151je (Org. Proc. Res. Dev.) r\u00f6viden le\u00edrja a reakci\u00f3 folyamat\u00e1t a k\u00f6vetkez\u0151 \u00e1br\u00e1n.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"392\" height=\"119\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/12\/2.jpg\" alt=\"\" class=\"wp-image-4887\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/12\/2.jpg 392w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/12\/2-300x91.jpg 300w\" sizes=\"(max-width: 392px) 100vw, 392px\" \/><\/figure>\n\n\n\n<p>A szintetikus szem\u00e9lyzet azonnal kereste a baleset \u00e9s a robban\u00e1s ok\u00e1t. Azt felt\u00e9telezt\u00e9k, hogy val\u00f3sz\u00edn\u0171leg oldhatatlan anyag okozta, \u00e9s az oldhatatlan anyag pontosan m-CBPO volt. Ez az oldhatatlan anyag lehet mag\u00e1b\u00f3l az m-CPBA nyersanyagb\u00f3l sz\u00e1rmaz\u00f3 szennyez\u0151d\u00e9s, vagy fokozatosan keletkezhet a reakci\u00f3rendszerben. A cikk szerz\u0151je a tov\u00e1bbiakban egy sor ellen\u0151rz\u0151 k\u00eds\u00e9rletet v\u00e9gzett. A szerz\u0151 meg\u00e1llap\u00edtotta, hogy az m-CBPO-tartalom az m-CPBA nyersanyagban mind\u00f6ssze 0,2%. Ezenk\u00edv\u00fcl a DTA- \u00e9s IST-k\u00eds\u00e9rletek meger\u0151s\u00edtett\u00e9k, hogy az m-CPBA 89 fokon olvad, \u00e9s 97 fok alatt stabil. A szerz\u0151 ezut\u00e1n DTA-vizsg\u00e1latot v\u00e9gzett az m-CPBA DMF-oldat\u00e1n, \u00e9s az eredm\u00e9nyek azt mutatt\u00e1k, hogy az m-CPBA boml\u00e1si h\u0151m\u00e9rs\u00e9klete 83 fok. A fenti k\u00eds\u00e9rletek azt mutatj\u00e1k, hogy a DMF nagym\u00e9rt\u00e9kben befoly\u00e1solhatja az m-CPBA boml\u00e1si h\u0151m\u00e9rs\u00e9klet\u00e9nek kritikus pontj\u00e1t. Ez\u00e9rt a szerz\u0151 \u00fagy v\u00e9li, hogy a DMF old\u00f3szer fontos szerepet j\u00e1tszott ebben a balesetben.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/12\/3-1.jpg\" alt=\"\" class=\"wp-image-4889\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"472\" height=\"422\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/12\/4.jpg\" alt=\"\" class=\"wp-image-4890\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/12\/4.jpg 472w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/12\/4-300x268.jpg 300w\" sizes=\"(max-width: 472px) 100vw, 472px\" \/><\/figure>\n\n\n\n<p>A szerz\u0151 ezut\u00e1n meg\u00e1llap\u00edtotta, hogy a h\u0151m\u00e9rs\u00e9klet n\u00f6veked\u00e9s\u00e9vel az m-CBPO-tartalom jelent\u0151sen megn\u0151tt, \u00e9s a DTA-kutat\u00e1s kimutatta, hogy amikor a h\u0151m\u00e9rs\u00e9klet el\u00e9ri a 125 fokot, nagyon komoly robban\u00e1s v\u00e1rhat\u00f3.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"452\" height=\"311\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/12\/5.jpg\" alt=\"\" class=\"wp-image-4891\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/12\/5.jpg 452w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/12\/5-300x206.jpg 300w\" sizes=\"(max-width: 452px) 100vw, 452px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"466\" height=\"408\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/12\/6.jpg\" alt=\"\" class=\"wp-image-4893\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/12\/6.jpg 466w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/12\/6-300x263.jpg 300w\" sizes=\"(max-width: 466px) 100vw, 466px\" \/><\/figure>\n\n\n\n<p>A szerz\u0151 ezut\u00e1n elv\u00e9gezte az m-CPBA DMF-oldat ARC-vizsg\u00e1lat\u00e1t, koncentr\u00e1ci\u00f3vizsg\u00e1latot, valamint az m-CPBA \u00e9s az m-CPBO vegyes stabilit\u00e1s\u00e1nak vizsg\u00e1lat\u00e1t. A v\u00e9gs\u0151 k\u00f6vetkeztet\u00e9s az, hogy az m-CPBA DMF-oldat\u00e1nak 185 percig tart, am\u00edg 26 fokr\u00f3l lassan 70 fokra emelkedik, majd n\u00e9h\u00e1ny perc alatt gyorsan 200 fokra emelkedik, vagy hasonl\u00f3. R\u00e1ad\u00e1sul a koncentr\u00e1ltabb m-CPBA DMF-oldat gyorsabban felmelegszik. Az m-CPBA \u00e9s az m-CPBO vegyes k\u00eds\u00e9rlete azt mutatja, hogy a h\u0151m\u00e9rs\u00e9klet kezdetben lassan emelkedik, de m\u00e1r 95 perc eltelt\u00e9vel hirtelen h\u0151m\u00e9rs\u00e9klet-emelked\u00e9s k\u00f6vetkezik be.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"494\" height=\"891\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/12\/7.jpg\" alt=\"\" class=\"wp-image-4895\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/12\/7.jpg 494w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/12\/7-166x300.jpg 166w\" sizes=\"(max-width: 494px) 100vw, 494px\" \/><\/figure>\n\n\n\n<p>\u00d6sszefoglalva, a cikk szerz\u0151je a robban\u00e1s \u00e1ltal\u00e1nos folyamat\u00e1t adja meg. El\u0151sz\u00f6r az m-CPBO k\u00e9pz\u0151d\u00e9se a h\u0151m\u00e9rs\u00e9klet n\u00f6veked\u00e9s\u00e9hez vezet, majd a nagy mennyis\u00e9g\u0171 m-CPBO k\u00e9pz\u0151d\u00e9se magas h\u0151m\u00e9rs\u00e9kleten robban\u00e1st okoz. V\u00e9g\u00fcl a szerz\u0151 dikl\u00f3rmet\u00e1n DCM old\u00f3szerk\u00e9nt haszn\u00e1lta a probl\u00e9ma sikeres megold\u00e1s\u00e1ra. A DTA-k\u00eds\u00e9rletek azt mutatj\u00e1k, hogy a dikl\u00f3rmet\u00e1nt old\u00f3szerk\u00e9nt haszn\u00e1lva nincs exoterm id\u0151vel.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"466\" height=\"312\" src=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/12\/10-1.jpg\" alt=\"\" class=\"wp-image-4896\" srcset=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/12\/10-1.jpg 466w, https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/12\/10-1-300x201.jpg 300w\" sizes=\"(max-width: 466px) 100vw, 466px\" \/><\/figure>\n\n\n\n<p>K\u00eds\u00e9rletezz\u00fcnk t\u00edzezrekkel, a biztons\u00e1g az els\u0151! <strong><a href=\"https:\/\/longchangchemical.com\/hu\/product\/dimethyl-sulfoxide-cas-67-68-5\/\" target=\"_blank\" rel=\"noreferrer noopener\">DMSO<\/a><\/strong> \u00e9s a DMF er\u0151s pol\u00e1ros old\u00f3szerek, b\u00e1r j\u00f3 oldhat\u00f3s\u00e1ggal rendelkeznek a szerves anyagok sz\u00e1m\u00e1ra, ugyanakkor k\u00e9t\u00e9l\u0171 kardot is jelentenek!<\/p>\n\n\n<!-- lc-commercial-start -->\n<h2>How buyers usually evaluate coating and ink additives<\/h2>\n<p>Additive selection is usually most effective when the team defines the defect first and then screens compatibility, dosage range, and process stage. That is often much more reliable than choosing only by chemistry family or by a single dramatic lab result.<\/p>\n<ul>\n<li><strong>Start from the defect, not the additive name:<\/strong> wetting loss, crater, microfoam, and instability often need different solutions even inside the same formula.<\/li>\n<li><strong>Check compatibility at the intended dosage:<\/strong> the strongest additive can still be the wrong commercial choice if it narrows the process window too much.<\/li>\n<li><strong>Review the stage of use:<\/strong> some products are most useful during grind, while others matter more during let-down, filling, or final application.<\/li>\n<li><strong>Balance cure or film quality with defect control:<\/strong> the right additive fixes the problem without sacrificing adhesion, gloss, or appearance.<\/li>\n<\/ul>\n<h3>Recommended product references<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/hu\/product\/chlumiaf-094\/\">CHLUMIAF 094<\/a>:<\/strong> A balanced defoamer reference for waterborne coatings and many general foam-control screens.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/hu\/product\/chlumiaf-3062\/\">CHLUMIAF 3062<\/a>:<\/strong> Useful when printing-ink and UV-ink compatibility matter in the defoaming screen.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/hu\/product\/chlumiaf-3037\/\">CHLUMIAF 3037<\/a>:<\/strong> A stronger process-defoaming option when persistent foam survives harsher conditions.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/hu\/product\/chlumiwe-3280\/\">CHLUMIWE 3280<\/a>:<\/strong> A strong wetting-agent reference for inks, coatings, and difficult substrate wetting.<\/li>\n<\/ul>\n<h3>FAQ for buyers and formulators<\/h3>\n<p><strong>Why does an additive that looks powerful in a beaker sometimes fail in production?<\/strong><br \/>Because shear, temperature, substrate, and the full formula can all change the way the additive performs under real process conditions.<\/p>\n<p><strong>Should the most aggressive additive always be preferred?<\/strong><br \/>Not usually. The best additive is the one that solves the real defect while preserving the broadest safe operating window.<\/p>\n<!-- lc-commercial-end -->","protected":false},"excerpt":{"rendered":"<p>DMF is one of the most widely used solvents in organic synthesis, and is also known as a universal solvent. Today I will share a reaction case with you. The<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[106],"tags":[],"class_list":["post-4885","post","type-post","status-publish","format-standard","hentry","category-laboratory-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>There is a risk of explosion when m-CPBA and DMF react together - Longchang Chemical<\/title>\n<meta name=\"description\" content=\"DMF is one of the most widely used solvents in organic synthesis, and is also known as a universal solvent. 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