| 词条 | Metacresol purple |
| 释义 |
| ImageFile = M-cresol purple.svg | ImageSize = | ImageAlt = | IUPACName = | OtherNames = | Section1 = {{Chembox Identifiers | CASNo = 2303-01-7 | PubChem = 73030 | ChemSpiderID = 2006272 | SMILES = CC1=C(C=CC(=C1)O)C2(C3=CC=CC=C3S(=O)(=O)O2)C4=C(C=C(C=C4)O)C | Section2 = {{Chembox Properties | C=21 | H=18 | O=5 | S=1 | Appearance = | Density = | MeltingPt = | BoilingPt = | Solubility = | Section3 = {{Chembox Hazards | MainHazards = | FlashPt = | AutoignitionPt = }}Metacresol purple or m-cresol purple, also called m-cresolsulfonphthalein is a triarylmethane dye and a pH indicator that is used in medicine to detect end-tidal carbon dioxide to ensure successful tracheal intubation in an emergency as the indicator inside a colorimetric carbon dioxide detector.[1][2] It can be used to measure the pH in subzero temperatures of saline or hypersaline media.[3] In colometric capnography the indicator is incorporated in a matrix that provides a pH just above the indicator's colour change,[4] it undergoes the colour change from purple to yellow with CO2; (a yellow colour often described as gold) when CO2 dissolves as CO2 is acidic.[5] In chemistry, it has two useful indicator ranges:[2]
See also
References1. ^{{Cite news|url=https://lifeinthefastlane.com/ccc/capnography/|title=Capnography|work=LITFL • Life in the Fast Lane Medical Blog|access-date=2017-07-30|language=en-US}} {{clear}}{{pH indicator2. ^1 {{Cite web|url=https://www.sigmaaldrich.com/catalog/product/sial/857890|title=m-Cresol Purple 857890|website=Sigma-Aldrich|access-date=2017-07-30}} 3. ^{{cite journal|title=Characterization of meta-Cresol Purple for spectrophotometric pH measurements in saline and hypersaline media at sub-zero temperatures|journal=Scientific Reports|volume=7|issue=1|pages=2481|doi=10.1038/s41598-017-02624-0|pmid=28559544|pmc=5449408|year=2017|last1=Loucaides|first1=Socratis|last2=Rèrolle|first2=Victoire M. C|last3=Papadimitriou|first3=Stathys|last4=Kennedy|first4=Hilary|last5=Mowlem|first5=Matthew C|last6=Dickson|first6=Andrew G|last7=Gledhill|first7=Martha|last8=Achterberg|first8=Eric P}} 4. ^{{Cite journal|last=Gedeon|first=A.|last2=Krill|first2=P.|last3=Mebius|first3=C.|date=1994-09-01|title=A new colorimetric breath indicator (Colibri)|journal=Anaesthesia|language=en|volume=49|issue=9|pages=798–803|doi=10.1111/j.1365-2044.1994.tb04457.x|pmid=7978140|issn=1365-2044}} 5. ^{{Cite book|url=https://books.google.com/?id=aMEVmdRpU0IC&pg=PA1062&lpg=PA1062&dq=Metacresol+purple+changes+from+purple+to+gold+with+CO2.#v=onepage&q=Metacresol%20purple%20changes%20from%20purple%20to%20gold%20with%20CO2.&f=false|title=Benumof's Airway Management|last=Hagberg|first=Carin A.|date=2007-02-23|publisher=Elsevier Health Sciences|isbn=978-0323070171|language=en}} |indicator_name=Metacresol purple |low_pH =7.4 |low_pH_color=yellow |high_pH=9.0 |high_pH_color=purple }}{{pH indicator |indicator_name=Metacresol purple |low_pH =1.2 |low_pH_color=red |high_pH=2.8 |high_pH_color=yellow }}{{clear}}{{organic-compound-stub}} 4 : PH indicators|Chemicals in medicine|Triarylmethane dyes|Phenol dyes |
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