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Thymolphthalein

SIAL/89360 - ACS reagent, indicator (pH 8.8-10.5)

Synonym: 5′,5′′-Diisopropyl-2′,2′′-dimethylphenolphthalein

CAS Number: 125-20-2
Empirical Formula (Hill Notation): C28H30O4
Molecular Weight: 430.54
EC Number: 204-729-7
MDL Number: MFCD00005909
Linear Formula: C28H30O4
Product Type: Chemical

Catalog Number PKG Qty. Price Quantity
45-89360-10G 10 g
$48.70
1/EA
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45-89360-50G 50 g
$149.00
1/EA
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45-89360-5KG 5 kg
$2600.00
1/EA
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form solid
grade ACS reagent
  indicator (pH 8.8-10.5)
ign. residue ≤1%
InChI 1S/C28H30O4/c1-15(2)20-13-23(17(5)11-25(20)29)28(22-10-8-7-9-19(22)27(31)32-28)24-14-21(16(3)4)26(30)12-18(24)6/h7-16,29-30H,1-6H3
InChI key LDKDGDIWEUUXSH-UHFFFAOYSA-N
mp 248-254 °C
  251-253 °C (lit.)
Quality Level 200 
SMILES string CC(C)c1cc(c(C)cc1O)C2(OC(=O)c3ccccc23)c4cc(C(C)C)c(O)cc4C
technique(s) titration: suitable
  UV/Vis spectroscopy: suitable
Application: Thymolphthalein was suitable as indicator during titration of hyamine hydroxide.
General description: Thymolphthalien is an acid-base indicator which is colourless in acidic form and deep blue in basic form. Acidic form retains hydrogen on each hydroxyl group. It is suitable in preparing disappearing ink.
RIDADR NONH for all modes of transport
WGK Germany WGK 3
Flash Point(F) Not applicable
Flash Point(C) Not applicable
mp 248-254 °C; 251-253 °C (lit.)
UNSPSC 12000000

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