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89360

Thymolphthalein

ACS reagent

Synonym(e):

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

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Über diesen Artikel

Empirische Formel (Hill-System):
C28H30O4
CAS-Nummer:
Molekulargewicht:
430.54
UNSPSC Code:
12352200
NACRES:
NA.21
PubChem Substance ID:
EC Number:
204-729-7
Beilstein/REAXYS Number:
359413
MDL number:
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grade

ACS reagent

Quality Segment

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

General description

Thymolphthalein ist ein Säure-Basen-Indikator, der in saurer Form farblos und in basischer Form tiefblau ist. Die saure Form hält an jeder Hydroxylgruppe Wasserstoff zurück. Sie ist für die Herstellung von unsichtbarer Tinte geeignet.

Application

Thymolphthalein ist geeignet als Indikator bei der Titration von Hyaminhydroxid.[1]

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Dieser Artikel
1145531.0817570480
grade

ACS reagent

grade

ACS reagent

grade

ACS reagent

grade

-

technique(s)

UV/Vis spectroscopy: suitable, titration: suitable

technique(s)

titration: suitable

technique(s)

-

technique(s)

UV/Vis spectroscopy: suitable

form

solid

form

solid

form

solid

form

powder

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

100

mp

248-254 °C, 251-253 °C (lit.)

mp

251-253 °C (lit.)

mp

253 °C

mp

230-235 °C (lit.)

ign. residue

≤1%

ign. residue

-

ign. residue

-

ign. residue

-


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Lagerklasse

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)



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Kerry K. Karukstis, Gerald R. Van Hecke
Chemistry Connections: The Chemical Basis of Everyday Phenomena, 74-74 (2003)
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
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



Global Trade Item Number

SKUGTIN
89360-5KG04061833075760
89360-10G04061833075753
89360-50G04061835294336

Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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