Click Buttons Info on the author of this site Go to the Home Page Go to the Contact page Read Site Updates and latest news Go to the Utility Download Page Go to the Web Links Page View or Sign my Guest Book

CHEMISTRY : Chromatography

Dyes: Sky Blue 01


PROJECT CODE: 04.21
SECTION: CHROMATOGRAPHY
PROJECT TITLE: Dye characteristics: Sky Blue 01
RELEASE DATE: 20 Feb 1999 - 21 Feb 1999
LAST UPDATE: 2 Sep 2009
VERSION HISTORY: 1.0 - First release
1.1 - Revision of text and formatting. (2-Sep-2009)


PHYSICAL EXAMINATION:


Dye nick name: SKY BLUE 01
Scientific name: (not yet identified)
Colour: Cyan-Blue
RGB colour Code : Red:Green:Blue = 40:D8:F0
(Same as background of this cell)
Soluble in Water: NO
Soluble in Organic Solvents: YES
Most soluble in: Propanone
Least soluble in: TetrachloroMethane
Effect of heat while in solution: None, heat stable till 100°C
Rf Value in 60% Ethanol: Rf Top = 0.84 ; Rf Center =0.77
Rf Value in 60% Propanone: Rf Top = 0.75; Rf Center = 0.65



CHEMICAL TESTS:


Reagent added Colour change
Hydrochloric Acid: Violet
Sulphuric Acid: Violet
Nitric Acid: Violet
Sodium Hydroxide: Colourless (Blue-Green-Yellow-Colourless)
Ammonia solution: Colourless (Blue-Green-Yellow-Colourless)
Sodium Sulphide: Colourless (Blue-Green-Yellow-Colourless)
Others: n/a



NOTES and OTHER CHARACTERISTICS

  1. It is often the accompanying dye in blue inks together with the Fast Violet 01 dye
  2. Normally found in a less amount from the fast violet dye.
  3. Turns colourless in alkalis, and violet in acids hence acting as a pH indicator?
  4. The violet colour formed with the acids is similar to the dye Gentian Violet.

TENTATIVE IDENTIFICATION:

Not yet identified - could be a derivative of the dye Methyl Violet, since of the similar colour produced in low pH.





Chromatography Section Links :

[ Main Page ] - [ Methodology ] - [ Solvents Used ] - [ Rf Values ] - [ Ink Sample Analysis ] - [ Extracted Dyes ] - [ History ]

Chemistry Section Links

[ Chemistry Main Page ] - [ Qualitative & Quantitative Analysis ] - [ Pyrotechnics ] [ Cation ID ] - [ Chromatography ] - [ Crystal Study ] - [ Misc Documents ] - [ Chemistry Index Page ]