125-20-2
Product Name:
Thymolphthalein
Formula:
C28H30O4
Synonyms:
5′,5′′-Diisopropyl-2′,2′′-dimethylphenolphthalein;Thymolphthalein
Inquiry
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Flame Flammables GHS02  Health Hazard GHS08 |
| GHS Hazard Statements |
H225:Flammable liquids H313:Acute toxicity,dermal H333:Acute toxicity,inhalation H371:Specific target organ toxicity, single exposure |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P260:Do not breathe dust/fume/gas/mist/vapours/spray. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P405:Store locked up. |
PRODUCT INTRODUCTION
Description
Thymolphthalein is a phthalein dye used as an acid–base (pH) indicator. Its transition range is around pH 9.3–10.5. Below this pH, it is colorless; above, it is blue. The molar extinction coefficient for the blue thymolphthalein dianion is 38,000 M−1 cm−1 at 595 nm.