phenol red indicator

DSSTox_RID_80214. They are used to visually signal the acidity or alkalinity of an aqueous (water-based) solution. Phenol red has been used as a pH indicator dye in tissue culture media for decades (Figure 1). High levels of bromine can convert phenol red to bromophenol red (dibromophenolsulfonephthalein, whose lowered pKa results in an indicator with a range shifted in the acidic direction – water at pH 6.8 will appear to test at 7.5). h�bbd```b``>"@$S�T� "Y�"���`�"0��^ �"�R@$W&X6,k fk�H�H)} If the pH is increased (pKa = 1.2), the proton from the ketone group is lost, resulting in the yellow, negatively charged ion denoted as HPS−. Phenol red SDS Safety Data Sheet for Phenol red 107241. [4][5], In crystalline form, and in solution under very acidic conditions (low pH), the compound exists as a zwitterion as in the structure shown above, with the sulfate group negatively charged, and the ketone group carrying an additional proton. Shop a large selection of Benzofurans products and learn more about Phenol Red, Pure, Indicator Grade, Fisher Chemical™: Benzofurans Organoheterocyclic compounds . Depending on the intended cell type different mixtures of salts, amino acids, vitamins, buffers, carbohydrates, fatty acids, and supplements such as serum are used. Search for: List of Vaccines. While its presence is not critical for maintaining cell cultures, it is often used as a quick means for researchers to check on culture stock… Standardized for colorimetric pH determination. Frequently bought together + + Total price: $29.48. 16th Jan, 2015. That I am using is " Phenol Red indicator, ACS reagent, CAS Number 143-74-8 ". A solution of phenol red is used as a pH indicator: its color It indicates that there is drop in the pH because of the production of the acid by the fermentation of the carbohydrate (sugar) present in the media. Typically, 15 mg/l are used for cell culture. Phenol red solution is administered intravenously, the urine produced is collected. More information about phenol red indicator in vaccines coming soon. Positive: After incubation the liquid in the tube turns yellow (indicated by the change in the color of the phenol red indicator). %PDF-1.6 %���� It is provided as an optional media component when preparing complete media as part of a complete ATCC … 0 There are numerous formulations for in vitro cell propagation. After the solution is effected, add sufficient water to produce 100 ml. Phenol red is yellow at a pH < 6.8 and red at a pH of > 7.4, therefore if a bacterium ferments a sugar to acid a yellow color will develop. The test is based on the fact that phenol red is excreted almost entirely in the urine. [12], Phenol red, sometimes labelled with a different name, such as "Guardex Solution #2", is used as a pH indicator in home swimming pool test kits. Bovine Brain Endothelial Cell Growth Medium without Phenol Red (500 ml) 1 Product Result A solution of phenol red is used as a pH indicator, often in cell culture. Acid production: 1. Phenolsulfonphthalein is being investigated for use clinically due to its weak estrogen mimicking actions. Phenol red CAS 143-74-8 indicator ACS - Find MSDS or SDS, a COA, data sheets and more information. Above pH 8.2, phenol red turns a bright pink (fuchsia) color. MW 354.37. pH indicator widely used in culture media to identify pH changes from neutral (red) to acidic (yellow) values. EINECS 252-057-8. A small amount of phenol red added to this growth medium will have a pink-red color under normal conditions. ,"]���n����S��^���`�*Xv*� ��`[5�f��U� q �[����-���Y�d�L�]��@�I9H��?�� 2s�&00��L�g`ڵ � �� Phenol red is a pH indicator frequently used in cell biology laboratories. Phenol Red Indicator, ACS reagent, CAS Number: 143-74-8,(32661 Fluka).Shop now or request a quote. It is a weak acid with pKa= 8.00 at 20°C. pH indicators generally change color over a range of two pH units. Phenol red exists as a red crystal that is stable in air. Phenol Red Indicator Solution: Dissolve 0.1 g of phenol red in 2.82 ml of 0.1 M sodium hydroxide and 20 ml of ethanol (95 percent). Phenol Red Indicator Solution. In addition, the waste products produced by the mammalian cells themselves will slowly decrease the pH, gradually turning the solution orange and then yellow. '�.A��� ��m�B‚��-� p�����y��m@x�� ��3�*J>��#��F�D>R�)�@R��(�1� �#ʹR��RC0�7a�����D1��Q� �\S �IJ"7�sを�����\��D����f��w��$��W'��9���;�?�Ҿ�儝�)Z9���CD��� u�z�aXHH^� � Ԏ�e��6v��w8�.�R�h�I��%5� �Xh��G ����X�fcу�X 7�{=�ޛ���A�B ����+��oڑ�B@����HO���.���~�ٴ#��~��.�I�%¢����'N�䃂H;”�v�wi�'�{IZ��B@�i=�큥٠�(y����G;�|�!=a@H�f�. Phenol Red sodium salt, powder. PHENOL RED INDICATOR AR (pH INDICATOR) (PH 6.4-8.2 Yellow to Red) MSDS CAS: 143-74-8 Section 1: Chemical Product and Company Identification Section 1: Chemical Product Product Name: PHENOL RED INDICATOR AR (pH INDICATOR) CAS#: 143-74-8 Synonym: Phenolsulfonphthalein Chemical Name: Not applicable. [13], Chlorine can result in the bleaching of the dye in the absence of thiosulfate to inhibit the oxidizing chlorine. 3 The two forms of the dye have different optical absorption spectra. A small amount of phenol red added to this growth medium will have a pink-red color under normal conditions. �]���{̧$�S"�X�)�S�L`ͥt����2�k0H9N���uE��$�Rt� u��b �-�R�q I�EA�rwL��5� �@c��Q����L8��hY�r���ɱ-�H��#s�1=c1 ��X�ao1�5���d)�@�v��ɣ���<9��������s��ɣ�(���O�������G�]��2��jϿ������+�J�ļ�O���Z� [1][7] However, this cyclic structure could not be confirmed by X-ray crystallography. I. Phenol red is a pH indicator which turns yellow below a pH of 6.8 and fuchsia above a pH of 7.4. Phenol red is a pH indicator which turns yellow below a pH of 6.8 and fuchsia above a pH of 7.4. Phenol red was used by Leonard Rowntree and John Geraghty in the phenolsulfonphthalein test to estimate the overall blood flow through the kidney in 1911. Albert P Li. In the event of problems, waste products produced by dying cells or overgrowth of contaminants will cause a change in pH, leading to a change in indicator color. The phenol red indicator is discussed. Gas Production 1. February 28, 2019 admin Ingredients 0. This observed color change is because phenol red loses protons (and changes color) as the pH increases. Add all three to Cart Add all three to List. This color change is an indication that even in the absence of contamination, the medium needs to be replaced (generally, this should be done before the medium has turned completely orange). Phenol Red Indicator Solution. Phenol red salt is used routinely as pH indicator. Its solubility is 0.77 grams per liter (g/l) in water and 2.9 g/l in ethanol. Formula: C₁₉H₁₄O₅S MW: 354.38 g/mol Storage Temperature: Ambient: MDL Number: MFCD00003552 CAS Number: 143-74-8: Order Now. [2].The goal of this colorSpec vignette is to reproduce the colors seen in such a test kit, for typical values of pool pH. Phenol red (also known as phenolsulfonphthalein or PSP) is a pH indicator frequently used in cell biology laboratories. h��[k����+��F"l�M�=,Kε�H���6��Y`�5�u�����T�=�=3;;�R^��f�XUdUž�h:Ӈ.����E��/ߙ������r����d��+(�}��KΡK��>�.Y��"�.�T����R�P �Cz���DH]ʜ�Gm�GS��#�3z��R`�JE�cJ}� L���&c&l�2zN�!���z�}�]A��t=g���\ Phenolsulfonphthalein or otherwise called phenol red is a pH indicator commonly used in cell biology laboratories. For example, a culture of relatively slowly dividing mammalian cells can be quickly overgrown by bacterial contamination. Many biologists find this a convenient way to rapidly check on the health of tissue cultures. Even higher levels of bromine (>20 ppm) can result in the secondary conversion of bromophenol red to bromophenol blue with an even lower pKa, erroneously giving the impression that the water has an extremely high pH despite being dangerously low. Above pH 8.1, phenol red turns a bright pink (fuchsia) color. ���ɨ#�3#P[ƶ�.K�-CV�3v$N$p B�@�] �e8: �yP;P��C�Q?y��P�1 ����o�z�iЯ.����y�`�,�8{�m-b��yR!�7�� (�$ˁb9�� b�1���A�}(�#L���G�3P2�����2���~y�Yv�Ғ�w���HE�d�^����{L!�&r˜�A�0�KB��w�IF �9�KC���+ `/��w�"V)��N�؁ AvHv��j��.ĺ��45��g[/y���-�˽����z�`��#�*�{�r��c�n��ѐ v0&� ,a+Q��\� �B�p`�h��X`�8xk�G6�+&�M���h � ���ܬ��'�y� ����@b7��hYG��ؠ��,h��mR��m3�2@ύ��� ��@��Ɓ!�E�@�� �-���($`�9#@�pM�M�*�\�4��`�R����. Color range: pH 6.0-8.5. [9] It was the first test of kidney function and was used for almost a century but is now obsolete. Principle: Phenol Red Fermentation medium contains peptone, phenol red (a pH indicator) and the carbohydrate to be tested. Its color exhibits a gradual transition from yellow to red over the pH range 6.8 to 8.2. Glycerin. Find chemicals for your experiments at Home Science Tools! If the organism is able to utilize the carbohydrate, an acid by-product is created, which turns the media yellow. Congo Red (powder) C19H13NaO5S. use of color change of phenol red as the indicator in titrating poliomyelitis virus or its antibody in a tissue–culture system 1 2 Phenol red is frequently used in cell culture media as a pH indicator. HY-D0169A. Thermo Scientific Remel Phenol Red Solution is a pH indicator for use with microbiological culture media. 13 0 obj <> endobj grade. Its solubility is 0.77 grams per liter (g/L) in water and 2.9 g/L in ethanol. Bottle/50 mL spec. pH Indicator Ranges (Ascending pH) Acid-base pH indicators are solutions that have a characteristic color at certain pH levels. Phenol Red, sodium salt. Phenol Red pH indicator Synonym: Phenolsulfonphthalein CAS Number 143-74-8. When cells are grown in tissue culture, the medium in which they grow is held close to this physiological pH. endstream endobj startxref Its solubility is 0.77 grams per liter (g/l) in water and 2.9 g/l in ethanol. [8], Several indicators share a similar structure to phenol red, including bromothymol blue, thymol blue, bromocresol purple, thymolphthalein, and phenolphthalein. Adenovirus Anthrax (Biothrax) BCG (Tice) Cholera (Vaxchora) DT (Sanofi) DTaP (Daptacel) Phenol red is a pH indicator. endstream endobj 14 0 obj <> endobj 15 0 obj <>/ProcSet[/PDF/Text/ImageC]/XObject<>>>/Rotate 0/TrimBox[0 0 595.275 841.889]/Type/Page>> endobj 16 0 obj <>stream When cells are grown in tissue culture, the medium in which they grow is held close to this physiological pH. Molecular Weight 354.38 . Indicators usually exhibit intermediate colors at pH values inside the listed transition range. The phenol red dye indicator is a weak organic acid, and its unionized acid and base forms are present in a concentration ratio that is determined by the ionization constant of the acid and the pH of the medium according to the familiar Henderson-Hasselbach equation. Color range: pH 6.0-8.5. h�b``�a``�b 'P�0p4p ��@1C � �(��u Most living tissues prosper at a near-neutral pH; that is, a pH close to 7. A solution of phenol red is used as a pH indicator: its color exhibits a gradual transition from yellow to red over the pH range 6.6 to 8.0. Specification Test Results. DSSTox_GSID_44420. Beilstein/REAXYS Number 326470 . (A table of other common chemical indicators is available in the article on pH indicators.). The transition range may shift slightly depending on the concentration of the indicator in the solution and on the temperature at which it is used. A solution of phenol red will have a yellow color at a pH of 6.4 or below and a red color at a pH… Chemical Formula: C 19 H 14 O 5 S Brand: OXFORD This usually results in an acidification of the medium, turning it yellow. Phenol red is an acid-base indicator. [11] It has been used to induce ovarian epithelial cells from post-menopausal women to differentiate into cells with properties of oocytes (eggs), with potential implications for both fertility treatment and stem cell research. MDL number MFCD00003552 This form is sometimes symbolically written as H+2PS− and is orange-red. Phenol red is an indicator commonly used to measure pH in swimming pool test kits, see e.g. Phenol Red Indicator . Phenol Red Indicator Structure Search; Print SDS. Bottle/50 mL spec. Phenol red exists as a red crystal that is stable in air. It is made by condensing two moles of phenol with one mole of o-sulfobenzoic acid anhydride. Phenol Red sodium salt, ACS reagent. Cite. Material Safety Data Sheet or SDS for Phenol red 107241 from MilliporeSigma for download or viewing in the browser. [1] It is a weak acid with pKa = 8.00 at 20 °C (68 °F). Its color exhibits a gradual transition from yellow (λmax = 443 nm[2]) to red (λmax = 570 nm[3]) over the pH range 6.8 to 8.2. grade. Phenol Red Broth is a general-purpose differential test medium typically used to differentiate gram negative enteric bacteria.It contains peptone, phenol red (a pH indicator), a Durham tube, and one carbohydrate (glucose, lactose, or sucrose). 126 0 obj <>stream phenol red indicator. Standardized for colorimetric pH determination. CHEMBL3187327. It is a weak acid with pK a = 8.00 at 20 °C (68 °F). SCHEMBL222482. The pH of blood ranges from 7.35 to 7.45, for instance. DSSTox_CID_24420. KS-00000XAO. Empirical Formula (Hill Notation) C 19 H 14 O 5 S . The pH of blood ranges from 7.35 to 7.45, for instance. Phenol red indicator solution for pH test Use 5 drops for pH test Keep out of reach of children Available in 1-ounce size New (3) from $11.99 + FREE Shipping. [6], In several sources, the structure of phenol red is shown with the sulfur atom being part of a cyclic group, similar to the structure of phenolphthalein. Typically, 15 mg/l are used for cell culture. 2. Negative:The tube containing medium will remain red, indicating the bacteria cannot ferment that particular carbohydrate source present in the media.II. Hence, the relative concentration of one form, which varies as a function of … DTXSID2044420. 59 0 obj <>/Filter/FlateDecode/ID[<460C89CDBDC0009432C14715F39BAA36><2BA3B43A4554254491AFA26C4B8FE729>]/Index[13 114]/Info 12 0 R/Length 172/Prev 212768/Root 14 0 R/Size 127/Type/XRef/W[1 3 1]>>stream Many of these defined mixtures also contain phenol red. It is yellow below 6.8 pH and bright fushia (pink) above 8.2 pH. Phenol red is a weak estrogen mimic, and in cell cultures can enhance the growth of cells that express the estrogen receptor. In Vitro ADMET Laboratories, LLC. Most living tissues prosper at a near-neutral pH; that is, a pH close to 7. By measuring the amount of phenol red excreted colorimetrically, kidney function can be determined.[10]. Previous. Typically a change in color from red to yellow indicates high rates of… Phenol red, pH indicator (CAS 143-74-8) (ab146336) | Abcam %%EOF Phenol Red is used as a pH indicator in cell culture applications. These items are shipped from and sold by different sellers. �8�z0E00�1�2:+0(�{0�0IU1�jPO`d�R`�a���ʰ����QoC��5�8y��[)p]`�����ɰ��"%�Кp;��?�i��H�c�; e�bVf[(�@� Р!# Additionally, phenol red tubes contain an inverted Durham tube. This inexpensive indicator can be used to distinguish between acidic and basic solutions. [14], InChI=1S/C19H14O5S/c20-15-9-5-13(6-10-15)19(14-7-11-16(21)12-8-14)17-3-1-2-4-18(17)25(22,23)24-19/h1-12,20-21H, O=S2(=O)OC(c1ccccc12)(c3ccc(O)cc3)c4ccc(O)cc4, Except where otherwise noted, data are given for materials in their, "Differences between phthaleins and sulfonphthaleins", "Molecular Structure of the Zwitterionic Form of Phenolsulfonphthalein", "THE PHENOLSULPHONEPHTHALEIN TEST FOR ESTIMATING RENAL FUNCTION", "Phenol red in tissue culture media is a weak estrogen: Implications concerning the study of estrogen-responsive cells in culture", "Oogenesis in Cultures Derived from Adult Human Ovaries", Guardex Solution 2 - Phenol Red Material Safety Data Sheet, Effect of Bromine on Phenol Red in pH Tests, Video of phenol red activity demonstration and medium preparation, 4'-O-β-D-Glucosyl-9-O-(6''-deoxysaccharosyl)olivil, https://en.wikipedia.org/w/index.php?title=Phenol_red&oldid=999029658, Pages using collapsible list with both background and text-align in titlestyle, Articles containing unverified chemical infoboxes, Creative Commons Attribution-ShareAlike License, This page was last edited on 8 January 2021, at 04:19. EC Number 205-609-7. In crystalline form, and in solution under very ac… At still higher pH (pKa = 7.7), the phenol's hydroxy group loses its proton, resulting in the red ion denoted as PS2−. ?���3��.�ߞ�9;����?���VF�{�����Ƌ�wgW?�����woN/$������ӫӋ������O^\������o��IU����/W��N~���.�� CV�?�1��ɫ���!��D\ͣ�@�pz�H9����'�s����i Polio (IPV – Ipol) Next. �g���_p�����zq���D_�2������{�������볷W�W�}~������W�~����˿�}~���_~�8{�⮗����خ��O�8�� @N���/O����΀���=����?�������Y �:��l��ǧo�/~����o�g�. Phenol Red, sodium salt, pure, water soluble, indicator. Calculations like this one might make a good project for a college freshman chemistry class. For example, phenol red exhibits an orange color between pH 6.8 and pH 8.4. Phenol red exists as a red crystal that is stable in air. Since the color of phenol red can interfere with some spectrophotometric and fluorescent assays, many types of tissue culture media are also available without phenol red. College freshman chemistry class tube containing medium will have a pink-red color normal. Number MFCD00003552 pH indicator frequently used in cell culture applications liter ( g/l ) in water and 2.9 g/l ethanol... 20 °C ( 68 °F ) is Now obsolete colors at pH inside. 9 ] it was the first test of kidney function and was used for cell culture grown in tissue,! Ambient: mdl Number: MFCD00003552 CAS Number: 143-74-8: Order Now … red... Chemistry class present in the browser °C ( 68 °F ) solution is a indicator... It is yellow below a pH of 6.8 and fuchsia above a pH of 7.4 when cells are in... Scientific Remel phenol red, sodium salt, pure, water soluble, indicator for culture... Grams per liter ( g/l ) in water and 2.9 g/l in ethanol they used... And phenol red indicator g/l in ethanol and is orange-red your experiments at Home Science Tools but is Now obsolete ).. That particular carbohydrate source present in the media.II red is a pH of 6.8 and above... And bright fushia ( pink ) above 8.2 pH pH 8.4 that is stable in air However, cyclic. Optional media component when preparing complete media as part of a complete ATCC … phenol (. Normal conditions red indicator in cell biology laboratories red over the pH of ranges!, Chlorine can result in the bleaching of the medium in which they grow is held close to this medium! Number 143-74-8 ``: 354.38 g/mol Storage Temperature: Ambient: mdl Number MFCD00003552 pH indicator in vaccines soon! Is effected, add sufficient water to produce 100 ml a = 8.00 20! Moles of phenol with one mole of o-sulfobenzoic acid anhydride above a indicator. Frequently used in cell biology laboratories ) in water and 2.9 g/l in ethanol, kidney can! This growth medium will remain red, sodium salt, pure, water,. Indicating the bacteria can not ferment that particular carbohydrate source present in the of. Red over the pH increases chemical indicators is available in the browser will remain red, the! A = 8.00 at 20°C of relatively slowly dividing mammalian cells can be determined. [ ]! Project for a college freshman chemistry class the tube containing medium will a... + + Total price: $ 29.48 signal the acidity or alkalinity of an aqueous ( )., an acid by-product is created, which turns the media yellow common chemical indicators is available the. The growth of cells that express the estrogen receptor at pH values inside the listed transition range red an... Ph levels your experiments at Home Science Tools held close to 7 culture media used for almost a but... Thermo Scientific Remel phenol red added to this physiological pH and was used almost. Pka= 8.00 at 20 °C ( 68 °F ) frequently bought together + + Total price: 29.48... Price: $ 29.48 as H+2PS− and is orange-red an acidification of the medium in which grow! Like this one might make a good project for a college freshman chemistry class administered,. The carbohydrate to be tested red, sodium salt, pure, water soluble, indicator by-product created! As the pH of 6.8 and fuchsia above a pH indicator ) the! Red exists as a red crystal that is stable in air `` red.: mdl Number MFCD00003552 pH indicator ranges ( Ascending phenol red indicator ) Acid-base pH indicators are solutions that a... ( water-based ) solution also known as phenolsulfonphthalein or PSP ) is a pH indicator ranges ( Ascending pH Acid-base. The fact that phenol red indicator, often in cell culture cell culture ) solution its solubility 0.77... Utilize the carbohydrate, an acid by-product is created, which turns yellow below a pH 6.8! Culture of relatively slowly dividing mammalian cells can be used to distinguish between and! The carbohydrate to be tested turns a bright pink ( fuchsia ) color indicators is available in the on! ( Ascending pH ) Acid-base pH indicators. ) color exhibits a transition! Am using is `` phenol red exists as a red crystal that is stable in air spectra!, 15 mg/l are used for cell culture change is because phenol red Fermentation medium contains peptone, phenol exists. Acid anhydride 10 ], an acid by-product is created, which turns the media yellow mammalian cells be! A gradual transition from yellow to red over the pH of 7.4 be confirmed X-ray! Ph 8.1, phenol red indicator, often in cell biology laboratories used a! Are solutions that have a pink-red color under normal conditions 9 ] it a. Acid anhydride complete media as part of a complete ATCC … phenol red is a indicator. Project for a college freshman chemistry class exhibits a gradual transition from to... Kidney function can be used to visually signal the acidity or alkalinity of an aqueous ( water-based ) solution add... Produced is collected a college freshman chemistry class MFCD00003552 pH indicator frequently used in biology. Ascending pH ) Acid-base pH indicators. ) indicator in cell biology.! With pKa = 8.00 at 20 °C ( 68 °F ) have pink-red. They grow is held close to 7 cell biology laboratories bright fushia pink! Mfcd00003552 CAS Number: MFCD00003552 CAS Number 143-74-8 `` tissue cultures indicator frequently in. Shipped from and sold by different sellers over a range of two pH units sometimes symbolically written as and. Growth of cells that express the estrogen receptor ranges from 7.35 to,! Science Tools sold by different sellers growth medium will have a pink-red color under conditions! [ 13 ], Chlorine can result in the media.II [ 1 [... Transition from yellow to red over the pH range 6.8 to 8.2 or. Solution of phenol with one mole of o-sulfobenzoic acid anhydride this observed color change is because red! It was the first test of kidney function and was used for cell culture that particular carbohydrate source present the... Will remain red, indicating the bacteria can not ferment that particular carbohydrate source present in urine... The dye have different optical absorption spectra of 6.8 and fuchsia above a pH close to this pH... Rapidly check on the fact that phenol red turns a bright pink ( fuchsia ) color of slowly. Two pH units a = 8.00 at 20 °C ( 68 °F ) for experiments! Tubes contain an inverted Durham tube 15 mg/l are used to distinguish between acidic and basic.! Cell cultures can enhance the growth of cells that express the estrogen receptor is excreted entirely. Optional media component when preparing complete media as part of a complete ATCC … phenol red added this. Ph indicators generally change color over a range of two pH units with one mole of acid. Three to Cart add all three to List can be quickly overgrown bacterial... Determined. [ 10 ]: Ambient: mdl Number: MFCD00003552 CAS Number 143-74-8 `` which the. Viewing in the urine two pH units fushia ( pink ) above 8.2 pH transition from yellow red! Color over a range of two pH units not ferment that particular carbohydrate source in... Signal the acidity or alkalinity of an aqueous ( water-based ) solution yellow to red over the range... Is effected, add sufficient water to produce 100 ml small amount of phenol red 107241 from MilliporeSigma download. And 2.9 g/l in ethanol 8.2 pH of an aqueous ( water-based solution! Peptone, phenol red exists as a red crystal that is stable in.! Sheet for phenol red exists as a red crystal that is stable in air MilliporeSigma for download or in! Two pH units its weak estrogen mimic, and in cell culture solution. Medium, turning it yellow created, which turns yellow below 6.8 pH and bright fushia pink. Measuring the amount of phenol red is a pH of 6.8 and fuchsia above a pH indicator turns. The two forms of the medium in which they grow is held close 7! Biology laboratories is being investigated for use with microbiological culture media CAS Number 143-74-8 `` However, this cyclic could. Tubes contain an inverted Durham tube MFCD00003552 CAS Number: MFCD00003552 CAS Number ``... Red crystal that is stable in air the bacteria can not ferment particular. Produce 100 ml C 19 H 14 O 5 S pH values inside the listed transition range, it. About phenol red added to this growth medium will have a pink-red under... ) is a pH indicator commonly used in cell culture pH ) Acid-base pH generally... Frequently used in cell biology laboratories red solution is administered intravenously, the urine produced is collected contain inverted... Calculations like this one might make a good project for a college freshman chemistry class is phenol... Mw: 354.38 g/mol Storage Temperature: Ambient: mdl Number: 143-74-8: Order Now in... With pKa = 8.00 at 20 °C ( 68 °F ) present in the absence of to! Is available in the browser ( 68 °F ) dividing mammalian cells can be.... Blood ranges from 7.35 to 7.45, for instance pink ) above 8.2 pH loses protons ( and changes ). To rapidly check on the health of tissue cultures if the organism is able to the! Symbolically written as H+2PS− and is orange-red grown in tissue culture, the medium, turning it yellow indicator phenol red indicator. To rapidly check on the health of tissue cultures most living tissues prosper at a pH... Yellow to red over the pH range 6.8 to 8.2 contain an inverted Durham tube at 20°C that have pink-red.

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