Description
Bromphenol blue is an ACS-grade indicator intended for microscopy, with CAS number 115-39-9, EG number 204-086-2 and empirical formula C₁₉H₁₀Br₄O₅S. Its molar mass is 669,99 g/mol, enabling accurate weighing for stock and working solutions. The product is In the laboratory, bromphenol blue serves as a pH indicator and as a visualisation aid in microscopy-related applications where a defined ACS quality is preferred. Material from manufacturer Carl ROTH carries the dual designation ACS and for microscopy, aligning the dye with analytical and imaging-oriented protocols. Documented identity parameters—CAS, EG number, formula and molar mass—support method transfer, reagent qualification and inventory control. Glass packaging helps maintain integrity of the solid dye until use in buffered systems, gels or microscopic preparations according to local procedures.
This article is part of Reference substances & reagents (other), in Analytical standards & reference materials.
Key features
- Appearance: pink powder
- Appearance of solution: complies
- pH-transition range: 3.0 (yellow)- 4.6 (blue)
- Loss on drying (110 °C): ≤1.0 %
- CAS number: 115-39-9
- Pack sizes: 5 g, 10 g, 25 g
- EG nr.: 204-086-2
- Empirical formula: C₁₉H₁₀Br₄O₅S
- Molar mass: 669,99 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Bromphenol blue, ACS, for microscopy, 5 g, glass
What is this article?
Bromphenol blue, ACS, for microscopy, 5 g, glass is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Reference substances & reagents (other), inside Analytical standards & reference materials, in Lab chemicals.
A reference substance has a stated identity and a stated content, used to check a method or to standardise a titration. It is a more tightly specified article than a reagent grade bottle of the same name. The lot's certificate is part of the product.
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.
Which category should I open next?
The category is Analytical standards & reference materials. The sub-category is Reference substances & reagents (other). The catalogue is Lab chemicals.
Shelves beside this one are ICP, AAS & ion standards, Chromatography standards (GC, HPLC, pesticides), Volumetric standard solutions (titration), Reagents for analysis (Ph. Eur., ASTM, DIN), Spectroscopy & physical property standards and Indicators & indicator solutions.
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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