Epichrome

02-05-2021
 |  [RAND-100] - Comments



Epichrome is a fantastic solution for site-specific browsers (AKA SSBs). Yet, I prefer Firefox to Chrome due to its great extensibility. Also, even though Epichrome is great, it has problems like copying extensions for an SSB from one workstation to another. Epichrome is made up of two parts: an AppleScript-based Mac application (Epichrome.app) and a companion Chrome extension (Epichrome Helper). Epichrome.app creates Chrome-based site-specific browsers (SSBs) for Mac OSX (Chrome must be installed in order to run them, but they are full Mac apps, each with its own separate Chrome profile). Epichrome: Web Apps as Normal Apps. Epichrome is a desktop app which transforms any website into app that you can launch and close on your Mac. It’s intended for web apps which you access through the browser – the type of online apps that you check many times a day, like Gmail or Brain.fm.

Eriochrome Black T
Names
Preferred IUPAC name
Sodium 1-[1-Hydroxynaphthylazo]-6-nitro-2-naphthol-4-sulfonate
Systematic IUPAC name
Sodium 4-[2-(1-hydroxynaphthalen-2-yl)hydrazin-1-ylidene]-7-nitro-3-oxo-3,4-dihydronaphthalene-1-sulfonate
Other names
Sodium 4-[2-(1-hydroxynaphthalen-2-yl)hydrazin-1-ylidene]-7-nitro-3-oxonaphthalene-1-sulfonate; Solochrome Black T; ET-00; Erio T
Identifiers
  • 1787-61-7
AbbreviationsEBT
4121162
ECHA InfoCard
EC Number
  • 217-250-3
MeSHEriochrome+black+T
  • 5359641 (4E)
RTECS number
UNII
  • MPC0KHJ23C
UN number2923
  • InChI=1S/C20H13N3O7S.Na/c24-17-10-18(31(28,29)30)15-9-12(23(26)27)6-7-14(15)19(17)22-21-16-8-5-11-3-1-2-4-13(11)20(16)25;/h1-10,24-25H,(H,28,29,30);/q;+1/p-1/b22-21+;
  • C1=CC=C2C(=C1)C=CC(=C2O)/N=N/C3=C4C=CC(=CC4=C(C=C3O)S(=O)(=O)[O-])[N+](=O)[O-].[Na+]
Properties
C20H12N3O7SNa
Molar mass461.381 g/mol
Appearancedark red/brown powder
Acidity (pKa)6.2, 11.55
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Epic Chrome

Epic

Eriochrome Black T is a complexometric indicator that is used in complexometric titrations, e.g. in the water hardness determination process. It is an azo dye. Eriochrome is a trademark of Huntsman Petrochemical, LLC.[1]

In its deprotonated form, Eriochrome Black T is blue. It turns red when it forms a complex with calcium, magnesium, or other metal ions.

Epichrome
EBT is blue in a buffered solution at pH 10. It turns red when Ca2+ ions are added.
EpichromeEpicrom tablet

Epichrome Change Icon

Applications[edit]

When used as an indicator in an EDTA titration, the characteristic blue end-point is reached when sufficient EDTA is added and the metal ions bound to the indicator are chelated by EDTA, leaving the free indicator molecule.

Eriochrome Black T has also been used to detect the presence of rare earth metals.[2]

References[edit]

  1. ^http://www.sigmaaldrich.com/catalog/product/sial/858390?lang=en&region=US
  2. ^Dubenskaya, L. O.; Levitskaya, G. D. (1999). 'Use of eriochrome black T for the polarographic determination of rare-earth metals'. Journal of Analytical Chemistry. 54 (7): 655–657. ISSN1061-9348.

Epichromosomal Expression

Epichrome

Epichrimes

External links[edit]

Epic Rom Sourceforge

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