Description
Chlorophenol red p.a. is an analytical indicator dye with CAS number 4430-20-0, empirical formula C₁₉H₁₂Cl₂O₅S and molar mass 423,27 g/mol. Supplied as a p.a. grade solid EG number 224-619-2 supports substance identification in laboratory documentation and purchasing records. This material from manufacturer Carl ROTH belongs to the indicator and pH-indicator group used for visual end-point detection and solution monitoring. The compact glass presentation helps preserve reagent integrity during storage and dispensing of small analytical portions. Analysts employ chlorophenol red in titrations, buffer checks and teaching or routine assays that rely on clear colour transitions. Specification of purity grade, molecular formula and molar mass enables straightforward integration into validated methods and reagent inventories without ambiguity about identity or pack format.
Key features
- Maximum absorption: 560-575 nm
- Loss on drying (110 °C): ≤5 %
- CAS number: 4430-20-0
- Pack sizes: 5 g, 10 g, 25 g
- EG nr.: 224-619-2
- Empirical formula: C₁₉H₁₂Cl₂O₅S
- Molar mass: 423,27 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
Warning
Hazard Statements (H-Phrases)
Precautionary Statements (P-Phrases)