Description
PCB 91 is a discrete polychlorinated biphenyl congener supplied as ROTI®Star reference material for chromatography and environmental analysis. With CAS number 68194-05-8, empirical formula C₁₂H₅Cl₅ and molar mass 326,43 g/mol, it offers a clearly specified identity for quantitative and qualitative GC work. The standard is packed as 5 mg in glass, a compact solid format suited to the preparation of calibration solutions and quality-control spikes. In environmental laboratories, individual PCB congeners such as PCB 91 are essential for resolving complex residue patterns, confirming peak assignments and establishing method performance characteristics. Typical matrices include extracts from soil, sediment, water and biota analysed by gas chromatography with selective detection. Using a single-congener reference improves traceability compared with technical PCB mixtures alone. This ROTI®Star grade product from manufacturer Carl ROTH is intended for analytical teams that require reliable PCB standards for routine and research applications. Glass primary packaging helps maintain integrity of the solid during laboratory handling and storage.
This article is part of ICP, AAS & ion standards, in Analytical standards & reference materials.
Key features
- Assay (GC): ≥98 %
- CAS number: 68194-05-8
- Pack size: 5 mg glass
- EG nr.: 621-817-4
- Empirical formula: C₁₂H₅Cl₅
- Molar mass: 326,43 g/mol
- Safety Data Sheet:
Compliance & Safety Information
WarningHazard Statements (H-Phrases)
Precautionary Statements (P-Phrases)
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Questions about PCB 91, ROTI®Star, 5 mg, glass
What is this article?
PCB 91, ROTI®Star, 5 mg, glass is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in ICP, AAS & ion standards, inside Analytical standards & reference materials, in Lab chemicals.
An ICP, AAS or ion standard is a solution of a stated element or ion at a stated concentration, with an uncertainty. It is the calibration point of a spectrometer or an electrode. The matrix, often dilute acid, has to match the method. A standard past its expiry is not that concentration.
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 ICP, AAS & ion standards. The catalogue is Lab chemicals.
Shelves beside this one are Chromatography standards (GC, HPLC, pesticides), Reference substances & reagents (other), Volumetric standard solutions (titration), Reagents for analysis (Ph. Eur., ASTM, DIN), Spectroscopy & physical property standards and Indicators & indicator solutions.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.
