| | Identification | More |  | [Name] 
 BTB
 |  | [CAS] 
 34722-90-2
 |  | [Synonyms] 
 3,3'-DIBROMOTHYLMOLSULFONPHTHALEIN SODIUM SALT
 3',3''-DIBROMOTHYMOLSULFONEPHTHALEIN
 3',3''-DIBROMOTHYMOLSULFONEPHTHALEIN SODIUM SALT
 3',3''-DIBROMOTHYMOLSULFONPHTHALEIN SODIUM SALT
 BROMOTHYMOL BLUE
 BROMOTHYMOL BLUE SODIUM SALT
 BROMOTHYMOL BLUE, WATER SOLUBLE
 BROMTHYMOL BLUE
 BROMTHYMOL BLUE, SODIUM SALT
 BROMTHYMOL BLUE SODIUM SALT, WATER SOLUBLE
 BTB
 DIBROMOTHYMOL SULFONEPHTHALEIN, SODIUM SALT
 LABOTEST-BB LT00159732
 SODIUM BROMOTHYMOL BLUE
 phenol,4,4’-(3h-2,1-benzoxathiol-3-ylidene)bis[2-bromo-3-methyl-6-(1-methyleth
 Phenol,4,4’-(3H-2,1-benzoxathiol-3-ylidene)bis[2-bromo-3-methyl-6-(1-methylethyl)-,S,S-dioxide,monosodiumsalt
 yl)-,s,s-dioxide,monosodiumsalt
 sodium alpha-(3-bromo-5-isopropyl-4-oxo-2-methyl-2,5-cyclohexadienylidene)-2-(3-bromo-4-hydroxy-5-isopropyl-2-methylphenyl)toluenesulphonate
 BROMOTHYMOL BLUE  0.04 WT. % SOLUTION  &
 BROMOTHYMOL BLUE WATER-SOLUBLEINDICATOR, REAG. ACS
 |  | [EINECS(EC#)] 
 252-169-7
 |  | [Molecular Formula] 
 C27H27Br2NaO5S
 |  | [MDL Number] 
 MFCD00077263
 |  | [Molecular Weight] 
 646.36
 |  | [MOL File] 
 34722-90-2.mol
 | 
 | Chemical Properties | Back Directory |  | [Appearance] 
 Dark greenish gold crystalline powder
 |  | [Melting point ] 
 200-202°C
 |  | [density ] 
 0.990
 |  | [storage temp. ] 
 Store at RT.
 |  | [solubility ] 
 Solubility Soluble in water, ethanol
 |  | [form ] 
 Powder
 |  | [pka] 
 7.0, 7.1(at 25℃)
 |  | [color ] 
 Orange-brown to dark green
 |  | [Odor] 
 Characteristic odour
 |  | [PH] 
 6.0-7.6, yellow to blue
 |  | [PH Range] 
 Yellow (6.0) to blue (7.6)
 |  | [Stability:] 
 Stable. Incompatible with strong oxidizing agents.
 |  | [Water Solubility ] 
 SOLUBLE
 |  | [ε(extinction coefficient)] 
 ≥35000  at 614-618nm in 0.1 M NaOH  at 0.005g/L
 |  | [λmax] 
 615nm, 392nm
 |  | [BRN ] 
 6887926
 |  | [Major Application] 
 Lithium battery, textiles, antagonists
 |  | [CAS DataBase Reference] 
 34722-90-2(CAS DataBase Reference)
 |  | [EPA Substance Registry System] 
 34722-90-2(EPA Substance)
 | 
 | Safety Data | Back Directory |  | [Hazard Codes ] 
 Xn
 |  | [Risk Statements ] 
 R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .
 R36/37/38:Irritating to eyes, respiratory system and skin .
 |  | [Safety Statements ] 
 S24/25:Avoid contact with skin and eyes .
 S36:Wear suitable protective clothing .
 S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
 |  | [WGK Germany ] 
 3
 
 |  | [TSCA ] 
 Yes
 |  | [HS Code ] 
 29349990
 | 
 | Hazard Information | Back Directory |  | [Chemical Properties] 
 Dark greenish gold crystalline powder
 |  | [Uses] 
 
 Bromothymol Blue sodium salt has been used as a pH indicator in the yeast growth media (YPD, yeast extract peptone dextrose). |  | [Uses] 
 
 Suitable for use:
 In preparations of pH indicator solutionsIn phospholipid staining on tissues and cells prepared on microscopy slides
 |  | [Uses] 
 It is employed as a pH indicator which is yellow at pH ? 6.0 and blue at pH ? 7.6. It finds its major application in lithium battery, textiles and antagonists.
 |  | [General Description] 
 
 Bromothymol Blue is a sulfonated hydroxyquinone in acidic solutions. In alkaline solutions, it is present as a dianion that is blue with a larger conjugated system than the yellow hydroxyquinone. Both forms are lipophilic. It is also known as bromthymol blue or dibromothymolsulfonphthalein. |  | [Biochem/physiol Actions] 
 Bromothymol Blue is a pH-indicator. It is also used for carbonic anhydrase assay due to the conversion of carbon dioxide to bicarbonate.
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