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Bromthymol Blue

PubChem CID
6450
Structure
Bromthymol Blue_small.png
Bromthymol Blue_3D_Structure.png
Molecular Formula
Synonyms
  • Bromothymol blue
  • 76-59-5
  • BROMTHYMOL BLUE
  • Dibromothymolsulfophthalein
  • 3,3'-Dibromothymolsulfonphthalein
Molecular Weight
624.4 g/mol
Computed by PubChem 2.2 (PubChem release 2021.10.14)
Dates
  • Create:
    2005-03-26
  • Modify:
    2025-01-25
Description
Bromothymol blue is a member of the class of 2,1-benzoxathioles that is 2,1-benzoxathiole 1,1-dioxide in which both of the hydrogens at position 3 have been substituted by 3-bromo-4-hydroxy-5-isopropyl-2-methylphenyl groups. It has a role as an acid-base indicator, a dye and a two-colour indicator. It is a 2,1-benzoxathiole, an arenesulfonate ester, an organobromine compound, a polyphenol and a sultone.
Bromthymol Blue is a dye used as an indicator in determining pH. Bromthymol blue is a weak acid. It can be in acid or base form, depending on the pH of the solution. This reagent is yellow in acidic solutions, blue in basic solutions and green in neutral solution.
A pH sensitive dye that has been used as an indicator in many laboratory reactions.

1 Structures

1.1 2D Structure

Chemical Structure Depiction
Bromthymol Blue.png

1.2 3D Conformer

2 Names and Identifiers

2.1 Computed Descriptors

2.1.1 IUPAC Name

2-bromo-4-[3-(3-bromo-4-hydroxy-2-methyl-5-propan-2-ylphenyl)-1,1-dioxo-2,1λ6-benzoxathiol-3-yl]-3-methyl-6-propan-2-ylphenol
Computed by Lexichem TK 2.7.0 (PubChem release 2021.10.14)

2.1.2 InChI

InChI=1S/C27H28Br2O5S/c1-13(2)17-11-20(15(5)23(28)25(17)30)27(19-9-7-8-10-22(19)35(32,33)34-27)21-12-18(14(3)4)26(31)24(29)16(21)6/h7-14,30-31H,1-6H3
Computed by InChI 1.0.6 (PubChem release 2021.10.14)

2.1.3 InChIKey

NUHCTOLBWMJMLX-UHFFFAOYSA-N
Computed by InChI 1.0.6 (PubChem release 2021.10.14)

2.1.4 SMILES

CC1=C(C=C(C(=C1Br)O)C(C)C)C2(C3=CC=CC=C3S(=O)(=O)O2)C4=C(C(=C(C(=C4)C(C)C)O)Br)C
Computed by OEChem 2.3.0 (PubChem release 2024.12.12)

2.2 Molecular Formula

C27H28Br2O5S
Computed by PubChem 2.2 (PubChem release 2021.10.14)

2.3 Other Identifiers

2.3.1 CAS

76-59-5

2.3.2 Deprecated CAS

1007629-44-8, 1017792-00-5, 1020714-56-0, 1190126-34-1, 1202965-59-0, 187674-42-6, 27459-90-1, 392711-47-6, 519-49-3, 734522-99-7

2.3.3 European Community (EC) Number

2.3.4 UNII

2.3.5 ChEBI ID

2.3.6 ChEMBL ID

2.3.7 DSSTox Substance ID

2.3.8 NCI Thesaurus Code

2.3.9 Nikkaji Number

2.3.10 NSC Number

2.3.11 Wikidata

2.3.12 Wikipedia

2.4 Synonyms

2.4.1 MeSH Entry Terms

  • Blue, Bromothymol
  • Blue, Bromthymol
  • Bromothymol Blue
  • Bromthymol Blue
  • Dibromothymolsulfonphthalein

2.4.2 Depositor-Supplied Synonyms

3 Chemical and Physical Properties

3.1 Computed Properties

Property Name
Molecular Weight
Property Value
624.4 g/mol
Reference
Computed by PubChem 2.2 (PubChem release 2021.10.14)
Property Name
XLogP3-AA
Property Value
7.6
Reference
Computed by XLogP3 3.0 (PubChem release 2021.10.14)
Property Name
Hydrogen Bond Donor Count
Property Value
2
Reference
Computed by Cactvs 3.4.8.18 (PubChem release 2021.10.14)
Property Name
Hydrogen Bond Acceptor Count
Property Value
5
Reference
Computed by Cactvs 3.4.8.18 (PubChem release 2021.10.14)
Property Name
Rotatable Bond Count
Property Value
4
Reference
Computed by Cactvs 3.4.8.18 (PubChem release 2021.10.14)
Property Name
Exact Mass
Property Value
624.00037 Da
Reference
Computed by PubChem 2.2 (PubChem release 2021.10.14)
Property Name
Monoisotopic Mass
Property Value
622.00242 Da
Reference
Computed by PubChem 2.2 (PubChem release 2021.10.14)
Property Name
Topological Polar Surface Area
Property Value
92.2 Ų
Reference
Computed by Cactvs 3.4.8.18 (PubChem release 2021.10.14)
Property Name
Heavy Atom Count
Property Value
35
Reference
Computed by PubChem
Property Name
Formal Charge
Property Value
0
Reference
Computed by PubChem
Property Name
Complexity
Property Value
818
Reference
Computed by Cactvs 3.4.8.18 (PubChem release 2021.10.14)
Property Name
Isotope Atom Count
Property Value
0
Reference
Computed by PubChem
Property Name
Defined Atom Stereocenter Count
Property Value
0
Reference
Computed by PubChem
Property Name
Undefined Atom Stereocenter Count
Property Value
0
Reference
Computed by PubChem
Property Name
Defined Bond Stereocenter Count
Property Value
0
Reference
Computed by PubChem
Property Name
Undefined Bond Stereocenter Count
Property Value
0
Reference
Computed by PubChem
Property Name
Covalently-Bonded Unit Count
Property Value
1
Reference
Computed by PubChem
Property Name
Compound Is Canonicalized
Property Value
Yes
Reference
Computed by PubChem (release 2021.10.14)

3.2 Experimental Properties

3.2.1 Physical Description

Odorless white to cream-colored solid; Available as pure compound, monosodium salt, and dilute solutions; [CHEMINFO]

3.3 Chemical Classes

Dyes -> Indicator Dyes

3.3.1 Cosmetics

Cosmetic colorant
S13 | EUCOSMETICS | Combined Inventory of Ingredients Employed in Cosmetic Products (2000) and Revised Inventory (2006) | DOI:10.5281/zenodo.2624118

4 Spectral Information

4.1 1D NMR Spectra

4.1.1 1H NMR Spectra

Instrument Name
Varian A-60D
Copyright
Copyright © 2009-2024 John Wiley & Sons, Inc. All Rights Reserved.
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4.2 Mass Spectrometry

4.2.1 GC-MS

1 of 2
NIST Number
70815
Library
Main library
Total Peaks
444
m/z Top Peak
43
m/z 2nd Highest
28
m/z 3rd Highest
41
Thumbnail
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2 of 2
Source of Spectrum
W5-37998-27538-27538
Copyright
Copyright © 2020-2024 John Wiley & Sons, Inc. All Rights Reserved.
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4.3 IR Spectra

4.3.1 FTIR Spectra

1 of 2
Technique
KBr WAFER
Source of Sample
Fluka Chemie AG, Buchs, Switzerland
Copyright
Copyright © 1980, 1981-2024 John Wiley & Sons, Inc. All Rights Reserved.
Thumbnail
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2 of 2
Instrument Name
Bruker IFS 85
Technique
KBr-Pellet
Source of Sample
E. Merck AG, Darmstadt
Copyright
Copyright © 1989, 1990-2024 Wiley-VCH Verlag GmbH & Co. KGaA. All Rights Reserved.
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4.3.2 ATR-IR Spectra

1 of 2
Instrument Name
Bruker Tensor 27 FT-IR
Technique
ATR-Neat (DuraSamplIR II)
Source of Spectrum
Bio-Rad Laboratories, Inc.
Source of Sample
TCI Chemicals India Pvt. Ltd.
Catalog Number
B0657
Lot Number
FII02-BTDQ
Copyright
Copyright © 2015-2024 John Wiley & Sons, Inc. All Rights Reserved.
Thumbnail
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2 of 2
Source of Sample
Sigma-Aldrich
Catalog Number
114413
Copyright
Copyright © 2018-2024 Sigma-Aldrich Co. LLC. - Database Compilation Copyright © 2018-2024 John Wiley & Sons, Inc. All Rights Reserved.
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6 Chemical Vendors

7 Pharmacology and Biochemistry

7.1 MeSH Pharmacological Classification

Coloring Agents
Chemicals and substances that impart color including soluble dyes and insoluble pigments. They are used in INKS; PAINTS; and as INDICATORS AND REAGENTS. (See all compounds classified as Coloring Agents.)
Indicators and Reagents
Substances used for the detection, identification, analysis, etc. of chemical, biological, or pathologic processes or conditions. Indicators are substances that change in physical appearance, e.g., color, at or approaching the endpoint of a chemical titration, e.g., on the passage between acidity and alkalinity. Reagents are substances used for the detection or determination of another substance by chemical or microscopical means, especially analysis. Types of reagents are precipitants, solvents, oxidizers, reducers, fluxes, and colorimetric reagents. (From Grant and Hackh's Chemical Dictionary, 5th ed, p301, p499) (See all compounds classified as Indicators and Reagents.)

8 Use and Manufacturing

8.1 Uses

EPA CPDat Chemical and Product Categories
The Chemical and Products Database, a resource for exposure-relevant data on chemicals in consumer products, Scientific Data, volume 5, Article number: 180125 (2018), DOI:10.1038/sdata.2018.125
Sources/Uses
A sulfonphthalein dye used as a pH indicator; [CHEMINFO] Used as a pH indicator for the pH range of 5.8-7.6 and 10.2-11.8; [Ullmann]

8.1.1 Use Classification

Cosmetics -> Cosmetic colorant
S13 | EUCOSMETICS | Combined Inventory of Ingredients Employed in Cosmetic Products (2000) and Revised Inventory (2006) | DOI:10.5281/zenodo.2624118

8.2 General Manufacturing Information

EPA TSCA Commercial Activity Status
Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2-bromo-3-methyl-6-(1-methylethyl)-: ACTIVE

9 Safety and Hazards

9.1 Hazards Identification

9.1.1 GHS Classification

Note
This chemical does not meet GHS hazard criteria for 77.8% (7 of 9) of all reports. Pictograms displayed are for 22.2% (2 of 9) of reports that indicate hazard statements.
Pictogram(s)
Irritant
Signal
Warning
GHS Hazard Statements

H302 (11.1%): Harmful if swallowed [Warning Acute toxicity, oral]

H315 (11.1%): Causes skin irritation [Warning Skin corrosion/irritation]

H319 (11.1%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]

Precautionary Statement Codes

P264, P264+P265, P270, P280, P301+P317, P302+P352, P305+P351+P338, P321, P330, P332+P317, P337+P317, P362+P364, and P501

(The corresponding statement to each P-code can be found at the GHS Classification page.)

ECHA C&L Notifications Summary

Aggregated GHS information provided per 9 reports by companies from 3 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Reported as not meeting GHS hazard criteria per 7 of 9 reports by companies. For more detailed information, please visit ECHA C&L website.

There are 2 notifications provided by 2 of 9 reports by companies with hazard statement code(s).

Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown.

9.1.2 Hazard Classes and Categories

Acute Tox. 4 (11.1%)

Skin Irrit. 2 (11.1%)

Eye Irrit. 2 (11.1%)

9.1.3 Hazards Summary

Dust may be irritating if inhaled; [CHEMINFO]

9.2 Regulatory Information

The Australian Inventory of Industrial Chemicals
Chemical: Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis[2-bromo-3-methyl-6-(1-methylethyl)-, S,S-dioxide
New Zealand EPA Inventory of Chemical Status
Bromothymol blue: Does not have an individual approval but may be used under an appropriate group standard

10 Literature

10.1 Consolidated References

10.2 NLM Curated PubMed Citations

10.3 Springer Nature References

10.4 Nature Journal References

10.5 Chemical Co-Occurrences in Literature

10.6 Chemical-Gene Co-Occurrences in Literature

10.7 Chemical-Disease Co-Occurrences in Literature

11 Patents

11.1 Depositor-Supplied Patent Identifiers

11.2 WIPO PATENTSCOPE

11.3 Chemical Co-Occurrences in Patents

11.4 Chemical-Disease Co-Occurrences in Patents

11.5 Chemical-Gene Co-Occurrences in Patents

12 Interactions and Pathways

12.1 Chemical-Target Interactions

13 Biological Test Results

13.1 BioAssay Results

14 Classification

14.1 MeSH Tree

14.2 NCI Thesaurus Tree

14.3 ChEBI Ontology

14.4 ChemIDplus

14.5 UN GHS Classification

14.6 EPA CPDat Classification

14.7 NORMAN Suspect List Exchange Classification

14.8 EPA DSSTox Classification

14.9 EPA TSCA and CDR Classification

14.10 EPA Substance Registry Services Tree

14.11 MolGenie Organic Chemistry Ontology

15 Information Sources

  1. Australian Industrial Chemicals Introduction Scheme (AICIS)
    Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis[2-bromo-3-methyl-6-(1-methylethyl)-, S,S-dioxide
    https://services.industrialchemicals.gov.au/search-inventory/
  2. CAS Common Chemistry
    LICENSE
    The data from CAS Common Chemistry is provided under a CC-BY-NC 4.0 license, unless otherwise stated.
    https://creativecommons.org/licenses/by-nc/4.0/
  3. ChemIDplus
    ChemIDplus Chemical Information Classification
    https://pubchem.ncbi.nlm.nih.gov/source/ChemIDplus
  4. DTP/NCI
    LICENSE
    Unless otherwise indicated, all text within NCI products is free of copyright and may be reused without our permission. Credit the National Cancer Institute as the source.
    https://www.cancer.gov/policies/copyright-reuse
  5. EPA Chemicals under the TSCA
    Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2-bromo-3-methyl-6-(1-methylethyl)-
    https://www.epa.gov/chemicals-under-tsca
    EPA TSCA Classification
    https://www.epa.gov/tsca-inventory
  6. EPA DSSTox
    CompTox Chemicals Dashboard Chemical Lists
    https://comptox.epa.gov/dashboard/chemical-lists/
  7. European Chemicals Agency (ECHA)
    LICENSE
    Use of the information, documents and data from the ECHA website is subject to the terms and conditions of this Legal Notice, and subject to other binding limitations provided for under applicable law, the information, documents and data made available on the ECHA website may be reproduced, distributed and/or used, totally or in part, for non-commercial purposes provided that ECHA is acknowledged as the source: "Source: European Chemicals Agency, http://echa.europa.eu/". Such acknowledgement must be included in each copy of the material. ECHA permits and encourages organisations and individuals to create links to the ECHA website under the following cumulative conditions: Links can only be made to webpages that provide a link to the Legal Notice page.
    https://echa.europa.eu/web/guest/legal-notice
  8. FDA Global Substance Registration System (GSRS)
    LICENSE
    Unless otherwise noted, the contents of the FDA website (www.fda.gov), both text and graphics, are not copyrighted. They are in the public domain and may be republished, reprinted and otherwise used freely by anyone without the need to obtain permission from FDA. Credit to the U.S. Food and Drug Administration as the source is appreciated but not required.
    https://www.fda.gov/about-fda/about-website/website-policies#linking
  9. New Zealand Environmental Protection Authority (EPA)
    LICENSE
    This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 International licence.
    https://www.epa.govt.nz/about-this-site/general-copyright-statement/
  10. ChEBI
  11. NCI Thesaurus (NCIt)
    LICENSE
    Unless otherwise indicated, all text within NCI products is free of copyright and may be reused without our permission. Credit the National Cancer Institute as the source.
    https://www.cancer.gov/policies/copyright-reuse
  12. ChEMBL
    LICENSE
    Access to the web interface of ChEMBL is made under the EBI's Terms of Use (http://www.ebi.ac.uk/Information/termsofuse.html). The ChEMBL data is made available on a Creative Commons Attribution-Share Alike 3.0 Unported License (http://creativecommons.org/licenses/by-sa/3.0/).
    http://www.ebi.ac.uk/Information/termsofuse.html
  13. Comparative Toxicogenomics Database (CTD)
    LICENSE
    It is to be used only for research and educational purposes. Any reproduction or use for commercial purpose is prohibited without the prior express written permission of NC State University.
    http://ctdbase.org/about/legal.jsp
  14. EPA Chemical and Products Database (CPDat)
  15. Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
    LICENSE
    Copyright (c) 2022 Haz-Map(R). All rights reserved. Unless otherwise indicated, all materials from Haz-Map are copyrighted by Haz-Map(R). No part of these materials, either text or image may be used for any purpose other than for personal use. Therefore, reproduction, modification, storage in a retrieval system or retransmission, in any form or by any means, electronic, mechanical or otherwise, for reasons other than personal use, is strictly prohibited without prior written permission.
    https://haz-map.com/About
  16. Japan Chemical Substance Dictionary (Nikkaji)
  17. Nature Chemistry
  18. NIST Mass Spectrometry Data Center
    LICENSE
    Data covered by the Standard Reference Data Act of 1968 as amended.
    https://www.nist.gov/srd/public-law
  19. SpectraBase
    Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis[2-bromo-3-methyl-6-(1-methylethyl)-, S,S-dioxide
    https://spectrabase.com/spectrum/Am9aLS0pI7c
    6,6'-(3H-2,1-benzoxathiol-3-ylidene)bis[2-bromothymol], S,S-dioxide
    https://spectrabase.com/spectrum/DYANnxFaPEg
    alpha,alpha-BIS(6-BROMO-5-HYDROXYCARVACRYL)-alpha-HYDROXY-o-TOLUENESULFONIC ACID, gamma-SULTONE
    https://spectrabase.com/spectrum/Hceayz57VFM
  20. NORMAN Suspect List Exchange
    LICENSE
    Data: CC-BY 4.0; Code (hosted by ECI, LCSB): Artistic-2.0
    https://creativecommons.org/licenses/by/4.0/
    NORMAN Suspect List Exchange Classification
    https://www.norman-network.com/nds/SLE/
  21. Springer Nature
  22. Wikidata
  23. Wikipedia
  24. Medical Subject Headings (MeSH)
    LICENSE
    Works produced by the U.S. government are not subject to copyright protection in the United States. Any such works found on National Library of Medicine (NLM) Web sites may be freely used or reproduced without permission in the U.S.
    https://www.nlm.nih.gov/copyright.html
  25. PubChem
  26. GHS Classification (UNECE)
  27. EPA Substance Registry Services
  28. MolGenie
    MolGenie Organic Chemistry Ontology
    https://github.com/MolGenie/ontology/
  29. PATENTSCOPE (WIPO)
CONTENTS