{"id":20216,"date":"2022-07-07T05:58:45","date_gmt":"2022-07-07T05:58:56","guid":{"rendered":"https:\/\/masterchem.ee\/?post_type=product&#038;p=20216"},"modified":"2022-07-07T06:30:10","modified_gmt":"2022-07-07T06:30:10","slug":"glyseriini-cas-56-81-5","status":"publish","type":"product","link":"https:\/\/masterchem.ee\/fi\/tooted-ja-teenused\/glyseriini-cas-56-81-5\/","title":{"rendered":"Glyseriini (CAS 56-81-5)"},"content":{"rendered":"<p><strong>K\u00e4ytt\u00f6<\/strong><\/p>\n<p>Glyserolia k\u00e4ytet\u00e4\u00e4n esimerkiksi ihovoiteissa, hammastahnoissa ja tupakassa kosteutta sitovana aineena. Muoveissa glyseroli toimii pehmentimen\u00e4, liimoissa se est\u00e4\u00e4 kovettumista ja sokereissa kivettymist\u00e4.l\u00e4hde?<\/p>\n<p>Kotioloissa glyserolia k\u00e4ytet\u00e4\u00e4n muun muassa puhallettavien saippuakuplien vahvistajana. Lis\u00e4ksi r\u00e4j\u00e4hdysaineteollisuus k\u00e4ytt\u00e4\u00e4 sit\u00e4 nitroglyserolin eli trinitroglyseriinin valmistukseen, jota saadaan kun glyseroli ester\u00f6ityy typpihapon kanssa. Elintarvikkeiden lis\u00e4aineena glyserolia k\u00e4ytet\u00e4\u00e4n sakeuttamisaineena ja kosteudens\u00e4ilytt\u00e4j\u00e4n\u00e4 ja sen E-koodi on E 422. Glyserolia myyd\u00e4\u00e4n apteekeissa.<\/p>\n<p><em>J\u00e4\u00e4tymisen esto<\/em><br \/>\nTalvehtiville selk\u00e4rangattomille glyseroli on t\u00e4rke\u00e4 j\u00e4\u00e4nestoaine. J\u00e4\u00e4tyess\u00e4\u00e4n kiteytyv\u00e4 vesi rikkoo helposti solut, joten el\u00e4imet k\u00e4ytt\u00e4v\u00e4t erilaisia keinoja laskeakseen solunesteen j\u00e4\u00e4tymispistett\u00e4. L\u00e4mp\u00f6tilan laskiessa selk\u00e4rangattomat el\u00e4imet valmistautuvat kohtaaman kylmyyden mm. lopettamalla sy\u00f6misen, antamalla solunesteiden v\u00e4kev\u00f6ity\u00e4 poistamalla vett\u00e4 ja tuottamalla solunesteeseen glyserolia.<\/p>\n<p>Vaikka glyserolin j\u00e4hmettymispiste on nollan yl\u00e4puolella, sen sekoittaminen veteen est\u00e4\u00e4 j\u00e4\u00e4kiteiden kasvua haittaamalla vetysidosten muodostumista. Yleens\u00e4 glyserolia on talveen sopeutuneilla selk\u00e4rangattomilla solunesteess\u00e4 muutama prosentti, mutta joillakin lajeilla on tavattu jopa 25 %:n pitoisuuksia.<\/p>\n<p>Soluissa glyserolin raaka-aineena toimii glykogeeni, ja sen valmistaminen jatkuu pitkin talvea. El\u00e4imet siis sopeutuvat kylm\u00e4\u00e4n yh\u00e4 paremmin l\u00e4mp\u00f6tilan laskiessa. Kun kev\u00e4t koittaa, glyseroli muutetaan takaisin glykogeeniksi, joka puolestaan on hyv\u00e4 energianl\u00e4hde.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Glyseriini on j\u00e4ykk\u00e4juoksuista v\u00e4rit\u00f6nt\u00e4 nestett\u00e4 ja se kuuluu kolmearvoisiin alkoholeihin eli trioleihin, jotka sis\u00e4lt\u00e4v\u00e4t kolme alkoholi- eli hydroksyyliryhm\u00e4\u00e4 (-OH). Siit\u00e4 k\u00e4ytet\u00e4\u00e4n my\u00f6s nimi\u00e4 glyseriini, 1,2,3-propaanitrioli ja 1,2,3-trihydroksipropaani. Glyseriini on rasvojen, erityisesti triglyseridien rakenneosa.<\/p>\n<p>Glyseriini on myrkyt\u00f6n, \u00f6ljym\u00e4inen, ilmasta kosteutta itseens\u00e4 sitova (hygroskooppinen) ja makean makuinen neste. Sen rakennekaava on CH2OH-CHOH-CH2OH. Glyseriini leimahduspiste on 177 \u00b0C (o.c.) ja itsesyttymisl\u00e4mp\u00f6tila 370 \u00b0C. Glyseriini liukenee muiden pienimassaisten alkoholien tapaan kaikissa suhteissa veteen. Aine hajoaa kuumentuessaan, jolloin muodostuu sy\u00f6vytt\u00e4vi\u00e4 h\u00f6yryj\u00e4 sis\u00e4lt\u00e4en akroleiinia (CH2=CHCHO).<\/p>\n<p>CAS: 56-81-5<\/p>\n<p><a target=\"_blank\" href=\"https:\/\/masterchem.ee\/wp-content\/uploads\/2018\/02\/Glycerol-TDS-MasterChem.pdf\" class=\"pdf\" alt=\"Tuotteen kuvaus (TDS)\" title=\"Tuotteen kuvaus (TDS)\" rel=\"noopener\">Tuotteen kuvaus (TDS)<\/a><\/p>\n","protected":false},"featured_media":6547,"template":"","meta":[],"product_brand":[],"product_cat":[180,109,115,294,117,120,323,258,351,290,307],"product_tag":[],"class_list":{"0":"post-20216","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-uncategorized-fi-2","7":"product_cat-anti-jaatymisnesteet","8":"product_cat-auton-ja-koneiden-kemikaalit","9":"product_cat-kosmetiikkateollisuus","10":"product_cat-kotitalouskemikaalit","11":"product_cat-laaketeollisuus","12":"product_cat-lannoitteet","13":"product_cat-muovi-fi","14":"product_cat-puutarhanhoito","15":"product_cat-rehuteollisuus","16":"product_cat-ruokateollisuus","17":"pif-has-gallery","19":"first","20":"instock","21":"taxable","22":"shipping-taxable","23":"purchasable","24":"product-type-variable","25":"has-default-attributes"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Glyseriini (CAS 56-81-5) - Chemistry For Industry - Solvents &amp; 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