Thymol blue, AnalaR NORMAPUR® Reag. Ph. Eur., ACS indicator
: Thymolsulphonphthalein, 3,3-Bis(4-hydroxy-5-isopropyl-2-methylphenyl)-3H-benzo[c][1,2]oxathiole 1,1-dioxide
:76-61-9
:
:C₂₇H₃₀O₅S
:MFCD00005869
:466.6 g/mol
:221
:12,09541
- Environmentally Preferable:
- pH Range 1: Pink to Brownish Yellow:1.2 - 2.8
- pH Range 2: Greenish-Yellow to Blue:8.0 - 9.2
- Absorption Max. λ1 (pH 1.2):543 - 547
- Absorption Max. λ2 (pH 2.8):431 - 436
- Absorption Max. λ3 (pH 7.8):431 - 436
- Absorption Max. λ4 (pH 9.5):594 - 598
- Absorptivity (A1%/1 cm; λ1, pH 1.2 on Dried Sample):400 - 500
- Absorptivity (A1%/1 cm; λ2, pH 2.8 on Dried Sample):200 - 300
- Absorptivity (A1%/1 cm; λ3, pH 7.8 on Dried Sample):200 - 300
- Absorptivity (A1%/1 cm; λ4, pH 9.5 on Dried Sample):450 - 550
- Loss on Drying (110 ºC):≤3
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