| Information | |
|---|---|
| has gloss | (noun) a laxative used in many preparations under various trade names; also used as an acid-base indicator in titrations involving weak acids and strong bases because it is brilliant red at high alkalinity and colorless below pH 8 phenolphthalein |
| has gloss | eng: Phenolphthalein is a chemical compound commonly pronounced [ˌfi nɔl ˈθei lin]. It has the formula C20H14O4 and is often written as "HIn" or "phph" in shorthand notation. Often used in titrations, it turns colorless in acidic solutions and pink in basic solutions. If the concentration of indicator is particularly strong, it can appear purple. In strongly basic solutions, phenolphthalein's pink color undergoes a rather slow fading reaction and becomes colorless again. In other words, the molecule has four forms: | class="wikitable" style="margin: 1em auto 1em auto; text-align: center;" ! Species | In+ || H2In || In2− || In(OH)3− |- ! Structure | | || || || |- ! Model | || || || |- ! pH | <0 || 0−8.2 || 8.2−12.0 || >12.0 |- ! Conditions | strongly acidic || acidic or near-neutral || basic || strongly basic |- ! Color | orange || colorless || pink to fuchsia || colorless |- ! Image | || || ||... |
| lexicalization | eng: Phenol Phthalein |
| lexicalization | eng: phenolphthalein |
| subclass of | (noun) an indicator that changes color on going from acidic to basic solutions acid-base indicator |
| subclass of | (noun) a mild cathartic laxative |
| Meaning | |
|---|---|
| Arabic | |
| has gloss | ara: ومدونة حسب النظام الدولي للوحدات |- |} الفينول فيثالين (بالانكليزية Phenolphthalein) الذي يرمز له بالصيغة الكيميائية C20H14O4 هو دليل يكون عديم اللون في الوسط الحمضي ووردي في الوسط المتعادل وأحمر في الوسط القاعدي |
| lexicalization | ara: فينول فثالين |
| lexicalization | ara: فينولفثالين |
| Bosnian | |
| has gloss | bos: Fenolftalein je hemijski spoj čija je sumarna formula C20H14O4. Koristi se kao pH indikator (u kisleoj sredini je bezbojan, u bazičnoj ružičast). Može se označavati kao „HIn“ ili „phph“. Zavisno od pH, mogući su sljedeći oblici: | class="wikitable" style="margin: 1em auto 1em auto; text-align: center;" ! Oblik | In || H2In || In2− || In(OH)3− |- ! Struktura | | || || || |- ! Model | || || || |- ! pH | < 0 || 0−8.2 || 8.2−12.0 || >12.0 |- ! Uslovi | jako kiselo || kiselo ili neutralno || bazično|| jako bazično |- ! Boja | narandžasta|| bezbojan|| ružičast || bezbojan |- ! Slika | || || || |} |
| lexicalization | bos: Fenolftalein |
| Bulgarian | |
| has gloss | bul: Фенолфталеинът (C20H14O4) е безцветно кристално вещество с точка на топене 262°С и плътност 1,3. Той е типичен основен индикатор. Разтворът на фенолфталеина в алкохол се използва (в аналитичната химия) за индикатор на алкална среда — получава хиноидна структура на единия фенолен пръстен (добива тъмновиолетово-червен, "малинов" цвят) в присъсътвието на алкални хидроксиди (pH>9,6), а след това в кисела среда се възстановява солевата безцветна форма. Намира приложение също така при производството на багрила, а в медицината — като слабително средство. |
| lexicalization | bul: Фенолфталеин |
| Catalan | |
| has gloss | cat: La fenolftaleïna és un colorant del grup de les ftaleïnes, emprat com a indicador del grau d'acidesa (pH). |
| lexicalization | cat: fenolftaleïna |
| Czech | |
| has gloss | ces: Fenolftalein je organická aromatická sloučenina. Často se používá při acidobazických titracích jako indikátor. |
| lexicalization | ces: fenolftalein |
| Mandarin Chinese | |
| lexicalization | cmn: fēn tai |
| lexicalization | cmn: 酚酞 |
| Danish | |
| has gloss | dan: Fenolftalein (især blandt kemikere også skrevet Phenolphthalein) er en pH-indikator med omslagsområde fra pH 8,2 til 10,0. Indikatoren skifter fra farveløs til rød i omslagsområdet for stigende pH og bruges ofte ved en syre-base titrering. |
| lexicalization | dan: Fenolftalein |
| German | |
| has gloss | deu: Phenolphthalein ist einer der bekanntesten pH-Indikatoren und wurde erstmals 1871 von Adolf von Baeyer dargestellt. Der Name setzt sich aus Phenol und Phthalsäureanhydrid zusammen. Phenolphthalein ist ein Triphenylmethanfarbstoff und bildet die Basisverbindung der Familie der Phthaleine. Das entsprechende Sulfonphthalein ist das Phenolrot. Bei einem pH-Wert von 0 bis etwa 8,2 ist gelöstes Phenolphthalein farblos, bei höherem pH-Wert färbt die Lösung sich rötlich-pink. |
| lexicalization | deu: Phenolphthalein |
| Estonian | |
| has gloss | est: Fenoolftaleiin on indikaator, mis aluselises lahuses on roosakaspunase värvusega, happelises või neutraalses lahuses värvusetu. |
| lexicalization | est: Fenoolftaleiin |
| Finnish | |
| has gloss | fin: Fenoliftaleiini (C20H14O4) on väriaine, jota käytetään muun muassa pH-indikaattorina . Aine on yksi käytetyimmistä indikaattoreista esimerkiksi titrauksessa sen sopivan värinmuutosalueen vuoksi . Fenoliftaleiini on äärimmäisen happamissa oloissa oranssia, neutraaleissa tai lievemmin happamissa väritöntä. Emästen vaikutuksesta se muuttuu punaiseksi pH:n ollessa 8,2–10,0 ja muuttuu jälleen värittömäksi erittäin emäksisissä oloissa . |
| lexicalization | fin: Fenoliftaleiini |
| lexicalization | fin: fenoliftaleiini |
| French | |
| has gloss | fra: La phénolphtaléine ou 3,3-bis(4-hydroxyphényl)-1-(3H)-monobenzofuranone est un composé organique de formule chimique CHO. Cest un indicateur de pH, cest-à-dire un composé qui change de couleur selon la valeur du pH de la solution dans laquelle on le place. |
| lexicalization | fra: Phenolphtaleine |
| lexicalization | fra: Phénolphtaleine |
| lexicalization | fra: Phénolphtaleïne |
| lexicalization | fra: phénolphtaléine |
| Hebrew | |
| has gloss | heb: פנולפתלאין - אינדיקטור של סביבת pH, נוזל חסר צבע. בסביבה בסיסית משנה את צבעו לוורוד-סגול. שינוי הצבע בטווח pH של 8.2-10. |
| lexicalization | heb: פנולפתלאין |
| Hungarian | |
| has gloss | hun: A fenolftalein egy C20H14O4 összegképletű szerves vegyület. Gyakran alkalmazzák sav-bázis indikátorként sav-bázis titrálásoknál. A fenolftalein vízben oldhatatlan, kísérleteknél az alkoholos oldatát használják. Maga a fenolftalein gyenge sav, ami vizes oldatban képes protonokat leadni. A fenolftaleint ftálsavanhidrid és fenol kondenzációjával állítják elő, savas közegben. |
| lexicalization | hun: fenolftalein |
| Indonesian | |
| lexicalization | ind: fenolftalin |
| Italian | |
| has gloss | ita: La fenolftaleina (nome IUPAC: 3,3-bis(4-idrossifenile)-1,(3H)-isobenzofuranone) è un comune indicatore usato nelle titolazioni acido-base. La sua formula chimica bruta è C20H14O4, il suo numero CAS è 77-09-8. |
| lexicalization | ita: fenolftaleina |
| Japanese | |
| has gloss | jpn: フェノールフタレイン（phenolphthalein、PP と略すこともある）は、分析化学でもちいられる pH指示薬の一種で、無水フタル酸とフェノールから合成される白色または淡黄色の固体。IUPAC命名法では 3,3-bis(4-hydroxyphenyl)-1(3H)-isobenzofuranone、化学式は C20H14O4 と表される。分子量は 318.32、CAS登録番号は [77-09-8]。 |
| lexicalization | jpn: フェノールフタレイン |
| Korean | |
| has gloss | kor: 페놀프탈레인(Phenolphthalein)은 무색 투명한 용액이다. 이 용액은 산염기를 구별하는 지시약으로 메틸오렌지 지시약, 리트머스 종이처럼 잘쓰이는 지시약이다. 화학식은 C20H14O4이며, 염기에서 주로 붉은색으로 반응하고, 중성과 산성에는 반응하지 않는다. |
| lexicalization | kor: 페놀프탈레인 |
| Lombard | |
| has gloss | lmo: La fenolftaleìna a l'è un culurant del grüp di ftalein, che la se dupra cume indicadur del grad de acidità (pH) in particular in di titulaziun. |
| lexicalization | lmo: Fenolftaleina |
| Dutch | |
| has gloss | nld: Fenolftaleïne is een paarsrode trifenylmethaankleurstof. De stof wordt vooral gebruikt als zuur-base indicator, om bij een zuur-base titratie het equivalentiepunt te bepalen. Het omslagpunt van de indicator wordt als equivalentiepunt beschouwd. Als indicator wordt fenolftaleïne vooral gebruikt bij titraties van een zuur (in de erlenmeyer) met een base (in de buret). Er wordt dan getitreerd tot de eerste violette kleur. |
| lexicalization | nld: Fenolftaleine |
| lexicalization | nld: fenolftaleïne |
| Norwegian | |
| has gloss | nor: Fenolftalein er en pH-indikator for sure og basiske løsninger. |
| lexicalization | nor: fenolftalein |
| Polish | |
| has gloss | pol: Fenoloftaleina (nazwa chemiczna: dihydroksyftalofenon, wzór sumaryczny: C20H14O4) – organiczny związek chemiczny, stosowany głównie jako wskaźnik pH. |
| lexicalization | pol: Fenoloftaleina |
| Portuguese | |
| has gloss | por: A fenolftaleína é um indicador de pH com a fórmula C20H14O4. Apresenta-se normalmente como um sólido em pó branco. É insolúvel em água e solúvel em etanol. |
| lexicalization | por: fenolftaleína |
| Moldavian | |
| has gloss | ron: Fenolftaleina este o substanţă chimică care se prezintă sub forma de cristale albe (incolore) solubile în alcooluri (metanol, etanol, propanol, iso-propanol, etc.) şi mai puţin solubilă în apă. Se foloseşte, în special, ca indicator de pH la titrări. În trecut era folosit în medicină ca purgativ/laxativ şi ca indicator de hemoglobină (Testul Kastle-Meyer). |
| lexicalization | ron: Fenolftaleină |
| Russian | |
| has gloss | rus: Фенолфталеи́н (4,4'-диоксифталофенон или 3,3-бис-(4-гидроксифенил)фталид) — трифенилметановый краситель, кислотно-основный индикатор, изменяющий окраску от бесцветной (при pH < 8,2) до красно-фиолетовой, «малиновой» (в щелочной); но в концентрированной щелочи — вновь бесцветен. В концентрированной серной кислоте образует розовый катион. |
| lexicalization | rus: фенолфталеин |
| Slovak | |
| lexicalization | slk: fenolftaleín |
| Castilian | |
| has gloss | spa: La fenolftaleína es un compuesto químico que se obtiene por reacción del fenol (C6H5OH) y el anhídrido ftálico (C8H4O3), en presencia de ácido sulfúrico. |
| lexicalization | spa: Fenolftaleina |
| lexicalization | spa: fenolftaleína |
| Serbian | |
| has gloss | srp: Фенолфталеин је индикатор који мења боју у односу на средину. Ако је средина кисела, он неће променити боју (остаће безбојан), а ако је средина базна, мењаће боју у љубичасто. |
| lexicalization | srp: Фенолфталеин |
| Swedish | |
| has gloss | swe: Fenolftalein, C20H14O4, är en indikator för sura och basiska ämnen. |
| lexicalization | swe: Fenolftalein |
| Turkish | |
| has gloss | tur: Fenolftalein, soluk sarı renkte, toz halinde bir organik bileşik. Formülü C20H14O4 olup, ergime noktası yaklaşık 250 °C'dir. Alkolde çözünür. Fakat suda daima çözünmez. Fenolftalein sıcak sülfürik asit veya çinko klorür katalizörlüğünde fenol ile ftalik anhidridin reaksiyonundan elde edilir. |
| lexicalization | tur: fenolftalein |
| Ukrainian | |
| has gloss | ukr: Фенолфталеїн — органічна сполука, синтетичний барвник, який застосовується при хімічних аналізах; вказує на реакцію розчину. |
| lexicalization | ukr: Фенолфталеїн |
| Chinese | |
| has gloss | zho: 酚酞是一種弱有機酸，分子式為C20H14O4，在pH＜8.2的溶液裡為無色的內酯式結構，當pH＞10時為粉紅色的醌式結構，是一種常用的酸鹼指示劑。 |
| lexicalization | zho: 酚酞 |
| Links | |
|---|---|
| similar | e/Phenolphthalein |
| Media | |
|---|---|
| media:img | Fenolftaleina struttura.PNG |
| media:img | Hazard X.svg |
| media:img | Phenolphtalein.jpg |
| media:img | Phenolphthalein-at-pH-9.jpg |
| media:img | Phenolphthalein-colourless-high-pH-3D-balls.png |
| media:img | Phenolphthalein-colourless-low-pH-3D-balls.png |
| media:img | Phenolphthalein-high-pH-2D-skeletal.svg |
| media:img | Phenolphthalein-in-conc-sulfuric-acid.jpg |
| media:img | Phenolphthalein-low-pH-2D-skeletal.svg |
| media:img | Phenolphthalein-mid-pH-2D-skeletal.svg |
| media:img | Phenolphthalein-orange-very-low-pH-3D-balls.png |
| media:img | Phenolphthalein-red-mid-pH-3D-balls.png |
| media:img | Phenolphthalein-sample.jpg |
| media:img | Phenolphthalein-very-low-pH-2D-skeletal.png |
| media:img | Phenolphthalein.jpg |
| media:img | Phenolphthalein.png |
| media:img | Phenolphthalein.svg |
| media:img | Phenolphthalein2.svg |
| media:img | Phenolphthalein3.png |
| media:img | PhenolphthaleinSynthesis.png |
| media:img | Phénolphtaléine.gif |
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