Find Info on Hydroxynaphthol Blue - When & Why It's Used

[higherme]

Hydroxynaphthol blue??

where can I find information on this?
I want to know when and why this is used...
Thanks

 

[ace123]

I don't know where you can find information on it, or why you would even want to. But i believe it is an indicator for metal titration. Specifically calcium.

 

[symbolipoint]

Check a catalog of Spectrum Chemical Company;
Check a catalog of any "fine chemicals" supplier;
Check in the Merck Index.