PRODUCT Properties
| Melting point: | >250°C |
| storage temp. | Amber Vial, Refrigerator, Under inert atmosphere |
| solubility | Solubility Soluble in water, ethanol |
| form | Powder |
| pka | 9.1(at 25℃) |
| color | Dark purple to dark brown |
| PH Range | Colorless (8.0) to pink (10.0) |
| λmax | 553nm |
| Stability: | Hygroscopic, Light Sensitive |
| Major Application | Inks, fire-resistant polymers, permanent hair straightener |
| EPA Substance Registry System | 1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxyphenyl)-, disodium salt (518-51-4) |
Description and Uses
Phenolphthalein (disodium), 95% is a pH indicator.
Safety
| Signal word | Warning |
| Hazard statements | H315-H319-H335 |
| Precautionary statements | P280-P271-P261-P264-P304-P340-P312-P302-P352-P362-2-P363-P332-P313-P305-P351-P338-P337-P405-P501 |
| Risk Statements | 36/37/38 |
| Safety Statements | 24/25 |
| HS Code | 29322985 |
