Key features and details
- pH indicator and tissue stain.
- CAS Number: 860-22-0
- Soluble in water to 10 mM
- Form / State: Solid
- Source: Synthetic
Product nameIndigo carmine, pH indicator and tissue stain
DescriptionpH indicator and tissue stain.
- Acid Blue 74
- C.I. 73015
- FD&C Blue No. 2
pH indicator (blue at pH 11.4 and yellow at 13.0). Tissue stain. Also a tool for the determination of hypochlorite.
Absorption: λmax 608 nm
Chemical name2-(1,3-Dihydro-3-oxo-5-sulfo-2H-indol-2-ylidene)-2,3-dihydro-3-oxo-1H-Indole-5-sulfonic acid disodium salt
Storage instructionsStore at Room Temperature. The product can be stored for up to 12 months.
Solubility overviewSoluble in water to 10 mM
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
Need more advice on solubility, usage and handling? Please visit our frequently asked questions (FAQ) page for more details.
To our knowledge, customised protocols are not required for this product. Please try the standard protocols listed below and let us know how you get on.
ab146352 has not yet been referenced specifically in any publications.