Description
Polyvinylpyrrolidone K 12, CELLPURE® is a low-molecular-weight polyvinylpyrrolidone polymer supplied for laboratory and materials applications, with CAS number 9003-39-8 and the repeating empirical formula (C₆H₉NO)ₙ. The K 12 grade is characterised by a molar mass range of 2000–3000 g/mol and a density of 1,2 g/cm³, placing it among lighter PVP fractions used where moderate chain length and solution behaviour are required. Laboratories select PVP K 12 when they need a defined K-value grade for solubility studies, binder or stabiliser trials, film-forming experiments, or as a reference polymer in method development. The combination of stated molar-mass window, density, and clear chemical identity supports reproducible preparation of aqueous or organic polymer solutions. Within polymer and monomer reagent portfolios, this grade complements other PVP types by offering a lower molecular-weight option for controlled viscosity and handling characteristics in research and process evaluation.
This article is part of Biochemicals (other), in Biochemicals & reagents.
Key features
- Endotoxins: tested
- Appearance: white to off-white powder
- K-value: 10,2-13,8
- Nitrogen content (N): 11,5-12,8 %
- Identity (IR): complies
- Clearness (5 % in H2O): clear
- Water (KF): ≤5,0 %
- Sulphated ash: ≤0,1 %
- pH value (5 % in H2O): 3,0-5,0
- Vinylpyrrolidone (HPLC): ≤0,001 %
- CAS number: 9003-39-8
- Pack sizes: 100 g, 500 g
- Empirical formula: (C₆H₉NO)ₙ
- Molar mass: 2000–3000 g/mol
- Density: 1,2 g/cm³
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Polyvinylpyrrolidone K 12, CELLPURE®, 100 g, plastic
What is this article?
Polyvinylpyrrolidone K 12, CELLPURE®, 100 g, plastic is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Biochemicals (other), inside Biochemicals & reagents, in Microbiology lab supplies.
These are the biochemical reagents that are not an amino acid, a sugar, a lipid, an enzyme or an antibiotic. Identity and purity still decide the bottle. If the compound is light-sensitive or hygroscopic, the handling on the label is part of the specification.
A biochemical is a molecule of life, sold as a reagent: an amino acid, a sugar, a nucleotide, a lipid, an enzyme, an antibiotic. The difference from a bulk chemical is that the use is a biological one, and the impurities that matter are the ones that change that use. An enzyme is specified by activity, not only by mass. An antibiotic is specified by potency. Papers are on PubMed. Structures are on PubChem. Strains and lines that consume these reagents are at ATCC.
Which category should I open next?
The category is Biochemicals & reagents. The sub-category is Biochemicals (other). The catalogue is Microbiology lab supplies.
Shelves beside this one are Amino acids & peptides, Carbohydrates & sugars, Coenzymes, nucleotides & vitamins, Enzymes & substrates, Antibiotics & antimycotics, Lipids, steroids & fatty acids and Detergents & surfactants.
What should I check before I order?
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.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Delivery across Europe, two to five days when in stock. 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.
