Description
Bromophenol red sodium salt is a p.a. grade pH indicator reagent with CAS number 102185-50-2 and empirical formula C₁₉H₁₁Br₂O₅SNa. Its molar mass of 534,15 g/mol supports accurate weighing and preparation of indicator solutions for analytical and titrimetric work. This dye belongs to the bromophenol indicator family and is positioned among analytical chemicals and pH indicators for solution chemistry. The material is available from manufacturer Carl ROTH for laboratories that prepare aqueous or mixed-solvent indicator systems according to established protocols. Compact glass packaging aids orderly storage and controlled dispensing on the bench. Use the reagent within validated procedures to obtain reproducible endpoints in pH-related measurements and classical wet-chemical analyses where a reliable indicator response is required.
This article is part of Analytical grade solvents (p.a.), in Solvents.
Key features
- Appearance: red-brown to brown powder
- pH-transition range: 5.2 (yellow red)-7.0 (purple)
- CAS number: 102185-50-2
- Pack sizes: 1 g, 5 g, 50 g
- Empirical formula: C₁₉H₁₁Br₂O₅SNa
- Grade: p.a.
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Bromophenol red sodium salt, p.a., 1 g, glass
What is this article?
Bromophenol red sodium salt, p.a., 1 g, glass is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Analytical grade solvents (p.a.), inside Solvents, in Lab chemicals.
An analytical-grade solvent, often marked p.a., has impurity limits tight enough for classical analysis and for preparing reagents. It is not automatically low enough in UV absorbance for HPLC, and it is not dry enough for a water-sensitive reaction. The grade is the purchase.
A solvent dissolves. The grade says which impurities are low enough for the method. Analytical grade is the ordinary pure solvent. HPLC and LC-MS grades limit the absorbance and the ions that would become peaks or background. A dry solvent has had water removed. A deuterated solvent is for NMR, where the hydrogen signal would otherwise drown the sample. Technical grade is for cleaning and for synthesis that does not need a chromatogram. Identity is on PubChem. Names follow IUPAC. Hazards follow ECHA, the CLP Regulation and REACH.
Which category should I open next?
The category is Solvents. The sub-category is Analytical grade solvents (p.a.). The catalogue is Lab chemicals.
Shelves beside this one are HPLC & LC-MS grade solvents, Dry & deuterated solvents (NMR, synthesis), Technical & synthesis grade solvents and Green & alternative solvents.
What should I check before I order?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
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