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Thymolphthalein

ACS reagent, indicator (pH 8.8-10.5)

Sinonimo/i:

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

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About This Item

Formula empirica (notazione di Hill):
C28H30O4
Numero CAS:
125-20-2
Peso molecolare:
430.54
Beilstein:
359413
Numero CE:
204-729-7
Numero MDL:
MFCD00005909
Codice UNSPSC:
12000000
ID PubChem:
329769727
NACRES:
NA.21

Grado

ACS reagent
indicator (pH 8.8-10.5)

Livello qualitativo

200

Forma fisica

solid

tecniche

UV/Vis spectroscopy: suitable
titration: suitable

Residuo alla calcinazione

≤1%

Punto di fusione

248-254 °C
251-253 °C (lit.)

Stringa SMILE

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
LDKDGDIWEUUXSH-UHFFFAOYSA-N

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Descrizione generale

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.

Applicazioni

Thymolphthalein was suitable as indicator during titration of hyamine hydroxide.

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

Eyeshields, Gloves, type N95 (US)

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Certificati d'analisi (COA)

Lot/Batch Number
BCCG9997
BCCH9312
BCCD9225
BCCB9528
BCBW2522

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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
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
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
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
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