Description
o-Cresolphthalein indicator solution is a ready-to-use 0,1 % preparation in denatured ethanol, offered in a 250 ml pack for analytical acid–base work. The dissolved indicator corresponds to the empirical formula C₂₂H₁₈O₄ with a molar mass of 346,39 g/mol. Physical data for the solution include a density of 0,88 g/cm³, a flash point of 13 °C and a boiling point of 78 °C; it is assigned UN number 1170. As a pre-dissolved pH indicator, it supports direct addition to titration vessels and rapid visual end-point recognition without separate solid weighing steps. This format from manufacturer Carl ROTH suits routine laboratory titration, teaching experiments and quality-control procedures that call for a consistent ethanolic indicator strength. The denatured ethanol matrix keeps the reagent convenient for bench use while the 250 ml volume balances consumption and shelf handling. Laboratories working with ready-to-use indicator solutions can integrate this product into standard operating procedures for acid–base analytics where o-cresolphthalein colour change is the preferred indication principle.
This article is part of Indicators & indicator solutions, in Analytical standards & reference materials.
Key features
- Pack size: 250 ml
- Molar mass: 346,39 g/mol
- Density: 0,88 g/cm³
- Flash point: 13 °C
- Boiling point: 78 °C
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
DangerHazard Statements (H-Phrases)
Precautionary Statements (P-Phrases)
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Questions about o-Cresolphthaleine indicator solution, 0.1 % in ethanol, denatured, 250 ml
What is this article?
o-Cresolphthaleine indicator solution, 0.1 % in ethanol, denatured, 250 ml is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Indicators & indicator solutions, inside Analytical standards & reference materials, in Lab chemicals.
An indicator solution changes colour at a stated point, usually a pH interval or a redox potential, so a titration endpoint can be seen. The solvent and the concentration decide how sharp the change is. A solid indicator dye and a ready solution are different articles.
A reference material is the article against which another result is compared. Its value is stated, and the uncertainty of that value is part of the product. An ICP or ion standard is a solution of known concentration. A volumetric standard is for titration. A chromatography standard is the peak you match. The grade names, including pharmacopoeia and ASTM, say which impurities were limited. Identity is checked on PubChem. Names follow IUPAC. Medicinal grades follow the European Pharmacopoeia and USP.
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The category is Analytical standards & reference materials. The sub-category is Indicators & indicator solutions. The catalogue is Lab chemicals.
Shelves beside this one are ICP, AAS & ion standards, Chromatography standards (GC, HPLC, pesticides), Reference substances & reagents (other), Volumetric standard solutions (titration), Reagents for analysis (Ph. Eur., ASTM, DIN) and Spectroscopy & physical property standards.
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