Titan yellow

From Sciencemadness Wiki
Revision as of 20:46, 7 August 2023 by Mabus (Talk | contribs) (Created page with "{{Chembox | Name = Titan yellow | Reference = | IUPACName = Disodium 2,2'-[(1E)-triaz-1-ene-1,3-diyldi(4,1-phenylene)]bis(6-methyl-1,3-benzothiazole-7-sulfonate) | PIN = | Sys...")

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search
Titan yellow
Names
IUPAC name
Disodium 2,2'-[(1E)-triaz-1-ene-1,3-diyldi(4,1-phenylene)]bis(6-methyl-1,3-benzothiazole-7-sulfonate)
Other names
2,2'-[(diazoamino)di-p-phenylene]bis[6-methyl-7-benzothiazolesulfonic acid] disodium salt
C.I. 19540
C.I. Direct Yellow 9
Clayton Yellow
Diazamine Golden Yellow T
Thiazole yellow
Thiazole Yellow G
Properties
C28H19N5Na2O6S4
Molar mass 695.720 g/mol
Appearance Light brown powder
Odor Faint
Melting point 250 °C (482 °F; 523 K) (decomposes)
Boiling point Decomposes
2.9 g/100 ml
Vapor pressure ~0 mmHg
Hazards
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Titan yellow is an organic chemical compound, a triazene dye used as a stain and fluorescent or colorimetric indicator in microscopy, as well as acid-base indicator.

Properties

Chemical

Titan yellow can be used as an acid-base indicator, changing its color from yellow to red between pH 12 and pH 13. Its pH value is given as 5.1 at 10 g/l at 20 °C.

The compound displays sensitivity to light.[1]

Physical

Titan yellow is a yellowish or light brownish powder.

Availability

Titan yellow can be bought from chemical suppliers.

Preparation

Can be synthesized from 2-(p-aminophenyl)-6-methyl-7-benzothiazolesulfonic acid.[2]

Projects

  • Fluorescent indicator
  • Colorimetric indicator (especially for Mg)
  • Acid-base indicator

Handling

Safety

Titan yellow is irritant. There is little data available regarding its toxicity.

Storage

In closed airtight bottles, away from acids, bases, light and oxidizers.

Disposal

Can be neutralized by safely destroying it with a strong oxidizing solution.

References

  1. https://www.chembk.com/en/chem/Titan%20Yellow
  2. Beilstein vol. 27, 2nd suppl, 509; F. J. Welcher, Organic Analytical Reagents vol. 4 (Van Nostrand, New York, 1948) p 391

Relevant Sciencemadness threads