Phenolphthalein solution
SIAL/319236 - 0.5 wt. % in ethanol: water (1:1)
CAS Number: 77-09-8
Empirical Formula (Hill Notation): C20H14O4
Molecular Weight: 318.32
MDL Number: MFCD00005913
Linear Formula: C20H14O4
Product Type: Chemical
λmax | 552 nm |
application(s) | diagnostic assay manufacturing hematology histology |
concentration | 0.5 wt. % in ethanol: water (1:1) |
density | 0.918 g/mL at 25 °C |
form | liquid |
InChI | 1S/C20H14O4/c21-15-9-5-13 |
InChI key | KJFMBFZCATUALV-UHFFFAOYSA |
mp | -35 °C |
Quality Level | 200 ![]() |
SMILES string | Oc1ccc(cc1)C2(OC(=O)c3ccc |
storage temp. | room temp |
visual transition interval | 8.0-10, colorless to red |
Application: | Phenolphthalein solution has been used to measure total titratable acids by titration method. |
General description: | Phenolphthalein is an acid base indicator. It is a weak acid, which is colorless in acidic solution and turns puce pink in alkaline solution. Phenolphthalein is genotoxic. It might cause oxidative damage and binds to estrogen receptors. |
General description: | Phenolphthalein solution is a synthetic indicator. It is colorless in acidic and neutral conditions. Phenolphthalein gives pink color when added to a base, therefore it is considered as a base indicator. |
Packaging: | 100 mL in glass bottle |
Symbol | ![]() ![]() |
Signal word | Warning |
Hazard statements | H226 - H319 |
Precautionary statements | P210 - P233 - P240 - P241 - P242 - P305 + P351 + P338 |
Risk Statements | 10 |
RIDADR | UN1170 - class 3 - PG 3 - Ethanol, solution |
WGK Germany | WGK 3 |
Flash Point(F) | 75.2 °F - closed cup |
Flash Point(C) | 24 °C - closed cup |
mp | -35 °C |
Density | 0.918 g/mL at 25 °C |
Storage Temp. | room temp |
UNSPSC | 12171500 |