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pH Indicators
pH indicators are chemical compounds that change color in response to variations in solution acidity or alkalinity, used to determine pH levels in analytical and experimental procedures.
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(2Z)-4-oxo-4-((4-[(E)-phenyldiazenyl]phenyl)amino)but-2-enoic acid
95%
tagCAS:168094-56-2
functionsFormula:C₁₆H₁₃N₃O₃
gavelMW:295.30 g/mol
฿2,310.00
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฿6,690.00
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Thymolphthalein monophosphoric acid disodium salt hydrate
≥99%
tagCAS:123359-43-3
functionsFormula:C₂₈H₂₉Na₂O₇P.xH₂O
gavelMW:554.486(anhy) g/mol
฿4,840.00
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3,4,5,6-Tetrabromophenolsulfonephthalein
95%
tagCAS:77172-72-6
functionsFormula:C₁₉H₁₀Br₄O₆S
gavelMW:669.99 g/mol
฿9,610.00
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2-(4,5,6-Trihydroxy-3-oxo-3H-xanthen-9-yl) -benzoic acid
tagCAS:518-41-2
functionsFormula:C₂₀H₁₂O₇
gavelMW:364.31 g/mol
฿12,270.00
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4,5,6,7-Tetrachlorofluorescein
Dye content 90 %
tagCAS:6262-21-1
functionsFormula:C₂₀H₈Cl₄O₅
gavelMW:470.09 g/mol
฿830.00
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Sodium 4-Hydroxyazobenzene-4'-sulfonate Hydrate
≥98%(T)
tagCAS:2623-36-1
functionsFormula:C₁₂H₉N₂NaO₄S·xH₂O
gavelMW:300.26 g/mol
฿1,820.00
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Poly[1-[4-(3-carboxy-4-hydroxyphenylazo)benzenesulfonamido]-1,2-ethanediyl,sodium salt
technical grade
tagCAS:219957-04-7
functionsFormula:[-CH₂CH[NHSO₂C₆H₄N=NC₆H₃(OH)CO₂Na]-]n
฿4,500.00
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