C27H28Br2O5S
624.4 g/mol
Dye & PigmentWarning
Bromothymol blue
CAS76-59-5EC200-971-2
Category
Dye & Pigment
Compound Class
Heterocycle
Primary Use
pH indicator
Bromothymol blue is a pH indicator commonly used to measure substances with a relatively neutral pH. It is frequently employed to detect the presence of carbonic acid in liquids.
pH indicator for neutral pH range measurementsDetection of carbonic acid in liquids
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
SimilarStructure SimilarSimilarity 0.74
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Safety Reference
Warning
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
Customs Tariff Classification
The international HS code for Bromothymol blue (CAS 76-59-5) is 2934.99.
HS code (international, 6-digit)
2934.99
EU CN code (8-digit)
2934 99 90
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
2-bromo-4-[3-(3-bromo-4-hydroxy-2-methyl-5-propan-2-ylphenyl)-1,1-dioxo-2,1lambda6-benzoxathiol-3-yl]-3-methyl-6-propan-2-ylphenol
InChIKey
NUHCTOLBWMJMLX-UHFFFAOYSA-N
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
Synonyms (41)
- Azul de bromotimol
- BROMTHYMOL BLUE
- Bleu de bromothymol
- Blu di bromotimolo
- Blue, Bromothymol
- Blue, Bromthymol
- Bromothymol blue
- Bromothymol blue free acid
- Bromothymol blue solution R1
- Bromthymolblau
- Dibromothymolsulfonphthalein
- Dibromothymolsulfophthalein
- Dibromothymolsulphonphthalein
- bromothymol sulfone phthalein
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