Synonym: BTB, bromothymol blue
Formula Wt.: 646.39
Notes: Sodium salt, water soluble; when making a solution with this, if it turns green, add 4% sodium hydroxide solution dropwise until it turns blue. Over time it may turn orange. It is still useable, but if you prefer to start with it blue, add another drop of sodium hydroxide solution.
Storage Code: Green—general chemical storage
Laboratory Grade—Intermediate purity. Suitable for educational laboratories. Use for qualitative analysis, not quantitative analysis.
This product is specially made for use in science education laboratories; no certificate of analysis is available.