Name

Chemical structure

λmax

Solubility

Menadione

230

Water soluble

Lawsone

267

Water soluble

AQDS

450

Water soluble

Bromoamine Acid

492

Water soluble

Methyl Orange

464

Water soluble

Methyl Red

430

Alcohol soluble

Ponceau S

515

Water soluble

Gongo Red

500

Water soluble

Eriochrome Red B

474

Water soluble