Description
Urea, min. 99.5 %, Ph. Eur., crystalline is a pharmacopoeia-quality chemical with the empirical formula CH₄N₂O and CAS number 57-13-6. Supplied as a crystalline solid Eur. requirements with a minimum content of 99.5 %. Key physical data include a molar mass of 60,06 g/mol, a density of 1,33 g/cm³ and EG number 200-315-5. Urea is widely applied in protein denaturation and refolding studies, buffer systems, pharmaceutical formulation work and general laboratory synthesis. The crystalline form enables precise weighing and rapid dissolution when preparing stock solutions or reaction mixtures. Available from manufacturer Carl ROTH, the product supports laboratories that specify Ph. Eur. quality for chemicals used in research, development and controlled analytical environments. Its placement among pharmacopoeia-grade reagents reflects suitability for protocols where documented purity and consistent performance are required across chemical and life-science applications.
This article is part of Dehydrated culture media (agar & broth bases), in Culture media & microbiology. See also Petri dishes.
Key features
- Appearance: fine, white crystals
- Assay: ≥99,5 %
- Appearance of solution: complies
- Melting range: 132-135 °C
- Alkaline reacting substances: complies
- Loss on drying: ≤1,0 %
- Sulphated ash: ≤0,1 %
- Ammonium (NH4): ≤0,05 %
- Heavy metals (as Pb): ≤0,0003 %
- Biuret: ≤0,1 %
- CAS number: 57-13-6
- Pack sizes: 500 g, 1 kg, 5 kg, 25 kg
- EG nr.: 200-315-5
- Empirical formula: CH₄N₂O
- Molar mass: 60,06 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Urea, min. 99.5 %, Ph. Eur., cryst., 500 g, plastic
What is this article?
Urea, min. 99.5 %, Ph. Eur., cryst., 500 g, plastic is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Dehydrated culture media (agar & broth bases), inside Culture media & microbiology, in Microbiologie.
A dehydrated medium is a powder the laboratory dissolves, sterilises and pours. The formulation name, the supplements it still needs, and the grams per litre are the specification. Two powders with similar names, one selective and one not, grow different organisms.
A culture medium is the food and the solid or liquid home of a microorganism. Dehydrated media are powders the laboratory dissolves and sterilises. Ready-to-use plates and tubes are already that. A Petri dish is the plate. Selective media let one kind of organism grow and hold another back. The formulation and the supplements, not the colour of the agar, are the specification. Reference strains are at ATCC. Methods are on PubMed. Biosafety practice is the WHO laboratory biosafety topic.
Which category should I open next?
The category is Culture media & microbiology. The sub-category is Dehydrated culture media (agar & broth bases). The catalogue is Microbiologie.
Shelves beside this one are Petri dishes, Ready-to-use culture media (plates, tubes, bottles), Microbiology (other), Inoculation loops, spreaders & needles and Microbial identification, hygiene monitoring & rapid tests.
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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Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.