Skip to Content
Merck
All Photos(1)

Documents

89360

Supelco

Thymolphthalein

ACS reagent, indicator (pH 8.8-10.5)

Synonym(s):

5′,5′′-Diisopropyl-2′,2′′-dimethylphenolphthalein

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Empirical Formula (Hill Notation):
C28H30O4
CAS Number:
125-20-2
Molecular Weight:
430.54
Beilstein:
359413
EC Number:
204-729-7
MDL number:
MFCD00005909
UNSPSC Code:
12000000
PubChem Substance ID:
329769727
NACRES:
NA.21

grade

ACS reagent
indicator (pH 8.8-10.5)

Quality Level

200

form

solid

technique(s)

UV/Vis spectroscopy: suitable
titration: suitable

ign. residue

≤1%

mp

248-254 °C
251-253 °C (lit.)

SMILES string

CC(C)c1cc(c(C)cc1O)C2(OC(=O)c3ccccc23)c4cc(C(C)C)c(O)cc4C

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

Looking for similar products? Visit Product Comparison Guide

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.

Application

Thymolphthalein was suitable as indicator during titration of hyamine hydroxide.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
BCCG9997
BCCH9312
BCCD9225
BCCB9528
BCBW2522

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Customers Also Viewed

Slide 1 of 3

1 of 3

Methyl Orange for microscopy (Hist.), indicator (pH 3.0-4.4)

Sigma-Aldrich

68250

Methyl Orange

Bromothymol Blue ACS reagent, Dye content 95 %

Sigma-Aldrich

114413

Bromothymol Blue

Indigo carmine for microscopy (Bact., Hist.), indicator (pH 11.5-14.0)

Sigma-Aldrich

57000

Indigo carmine

Kerry K. Karukstis, Gerald R. Van Hecke
Chemistry Connections: The Chemical Basis of Everyday Phenomena, 74-74 (2003)
Ali Babaei et al.
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 22(7), 955-959 (2006-07-14)
A novel, sensitive and selective adsorptive stripping procedure for simultaneous determination of copper, bismuth and lead is presented. The method is based on the adsorptive accumulation of thymolphthalexone (TPN) complexes of these elements onto a hanging mercury drop electrode, followed
Y Tsuda et al.
The Japanese journal of antibiotics, 46(1), 1-7 (1993-01-01)
We presented a new colorimetric bioassay of aminoglycoside antibiotics, which were represented by netilmicin (NTL) in this study, based on the discoloration of thymolphthalein (TP) in paper (indicator-disc) by carbon dioxide produced by Bacillus subtilis. To evaluate the amount of
M J Bruno et al.
Clinical chemistry, 41(4), 599-604 (1995-04-01)
Two noninvasive tests for assessing pancreatic exocrine function, the cholesteryl-[14C]octanoate breath test and the HPLCN-benzoyl-tyrosyl-p-aminobenzoic acid/p-aminosalicylic acid (NBT-PABA/PAS) test, were simultaneously performed in nine patients with pancreatic exocrine insufficiency due to chronic pancreatitis and in nine healthy volunteers. 14CO2 output
M N Hochmeister et al.
Journal of forensic sciences, 36(3), 656-661 (1991-05-01)
Some of the commonly used presumptive test reagents for identification of blood and semen could potentially affect the recovery of intact high-molecular-weight deoxyribonucleic acid (DNA) from evidentiary samples. Thus, the capability of performing restriction fragment length polymorphism (RFLP) analysis on
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service