{"id":17646,"date":"2022-01-31T20:32:47","date_gmt":"2022-01-31T20:32:51","guid":{"rendered":"https:\/\/masterchem.ee\/?post_type=product&#038;p=17646"},"modified":"2022-01-31T20:38:16","modified_gmt":"2022-01-31T20:38:16","slug":"viinihappo-cas-87-69-4","status":"publish","type":"product","link":"https:\/\/masterchem.ee\/fi\/tooted-ja-teenused\/viinihappo-cas-87-69-4\/","title":{"rendered":"Viinihappo (CAS 87-69-4)"},"content":{"rendered":"<p> <strong> Info<\/strong> <\/p>\n<p>T\u00f6\u00f6stusharud: farmaatsiat\u00f6\u00f6stus, toiduainet\u00f6\u00f6stus<br \/>\nCAS-i number: 87-69-4<br \/>\nWE number: 201-766-0<br \/>\nKeemiline valem: C4H6O6<br \/>\nMolaarmass: 150,09 g\/mol<br \/>\nTollitariifikood: 29181200<\/p>\n<p><strong>Muud f\u00fc\u00fcsikalised omadused<\/strong><br \/>\npH: 2,2 (0,1N)<br \/>\nSulamis-\/k\u00fclmumistemperatuur: 168-170\u00b0C<br \/>\nKeemispunkt \/ vahemik: 210\u00b0C<br \/>\nSuhteline tihedus: 1,76 g\/cm3 (20\u00b0C)<br \/>\nVees lahustuvus: ca. 1390 g\/l (20 \u00b0C), 3430 g\/l (100 \u00b0C)<\/p>\n","protected":false},"excerpt":{"rendered":"<p><strong>Viinihappo (CAS 87-69-4)<\/strong><\/p>\n<p>Viinihappo eli 2,3-dihydroksibutaanidihappo on orgaaninen happo, jota on luonnollisesti useissa kasveissa, etenkin viiniryp\u00e4leiss\u00e4 ja tamarindiss\u00e4. Se on yksi viinin hapoista ja sit\u00e4 lis\u00e4t\u00e4\u00e4n my\u00f6s joihinkin ruokiin tuomaan hapanta makua sek\u00e4 k\u00e4ytet\u00e4\u00e4n antioksidanttina. Viinihapon suoloja ja estereit\u00e4 kutsutaan dihydroksibutaanidioaateiksi tai triviaalinimens\u00e4 mukaisesti tartraateiksi. Viinihapon elintarvikkeissa k\u00e4ytett\u00e4v\u00e4 E-koodi on E 334. L-viinihapon p\u00e4ivitt\u00e4inen enimm\u00e4ism\u00e4\u00e4r\u00e4 (ADI) henkil\u00f6lle on 30 mg\/kg\/vrk ja se kohdistuu kaakao- ja suklaatuotteisiin.<\/p>\n<p>Noin vuonna 800 persialainen alkemisti Jabir ibn Hayyan erotti ensimm\u00e4isen\u00e4 viinihapon kaliumtartraatista. Modernin viinihapon eristysmenetelm\u00e4n kehitti ruotsalainen kemisti Carl Wilhelm Scheele. Viinihapon kiraalisuuden havaitsi ensimm\u00e4isen\u00e4 Jean Baptiste Biot vuonna 1832. Louis Pasteur jatkoi t\u00e4t\u00e4 tutkimusta vuonna 1847 tutkimalla viinihappokiteiden muotoja, jotka h\u00e4n havaitsi olevan ep\u00e4symmetrinen. Viinihapolla on kolme stereoisomeeria: luonnossa esiintyv\u00e4 L-(R,R)-(+)-viinihappo (CAS 87-69-4) ja sen peilikuvaisomeeri (enantiomeeri) D-(S,S)-(\u2212)-viinihappo (CAS 147-71-7), sek\u00e4 optisesti inaktiivinen mesoviinihappo (CAS 147-73-9) ja raseeminen seos, joka tunnetaan nimill\u00e4 paraviinihappo tai raseemihappo (CAS 133-37-9).<\/p>\n","protected":false},"featured_media":17652,"template":"","meta":[],"product_brand":[],"product_cat":[180,120,307],"product_tag":[],"class_list":{"0":"post-17646","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-uncategorized-fi-2","7":"product_cat-laaketeollisuus","8":"product_cat-ruokateollisuus","10":"first","11":"instock","12":"taxable","13":"shipping-taxable","14":"purchasable","15":"product-type-variable","16":"has-default-attributes"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Viinihappo (CAS 87-69-4) - Chemistry For Industry - Solvents &amp; 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