Description
Water particle-free is a reagent water specified as Reag. Ph. Eur., Chapter 4.1.1 (1095507), with CAS number 7732-18-5 and empirical formula H₂O. This material has a molar mass of 18,02 g/mol, a density of 1 g/cm³ and a boiling point of 100 °C; it is also identified by EG nr. 231-791-2. The particle-free water is supplied in a 1 l glass bottle for laboratory use among reagents of the European Pharmacopoeia. It is grouped with Reagents 4.1.1 and with reagents and volumetric standard solutions (Ph. Eur.), so it can be selected wherever that chapter requires particle-free water. Typical laboratory tasks include preparing test solutions and supporting analytical procedures that cite this reagent. The item is offered by manufacturer Carl ROTH in the chemicals in pharmacopoeia quality range. Stated physical constants, including density and boiling point, allow straightforward identification and handling under ordinary laboratory conditions. The 1 l glass presentation suits routine dispensing while maintaining the named particle-free character of the reagent water.
Key features
- CAS number: 7732-18-5
- Pack size: 1 l glass
- EG nr.: 231-791-2
- Empirical formula: H₂O
- Molar mass: 18,02 g/mol
- UNSPSC: 12190000
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Water particle-free, Reag. Ph. Eur., Chapter 4.1.1
What is this article?
Water particle-free, Reag. Ph. Eur., Chapter 4.1.1 is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Reagents for analysis (Ph. Eur., ASTM, DIN), inside Analytical standards & reference materials, in Lab chemicals.
A reagent for analysis is a chemical whose impurities are limited so they do not become a signal in a titration, a digestion or a photometric method. Pharmacopoeia, ASTM and DIN names point at different limit lists. The grade, not only the identity, is the purchase.
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.
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The category is Analytical standards & reference materials. The sub-category is Reagents for analysis (Ph. Eur., ASTM, DIN). The catalogue is Lab chemicals.
Shelves beside this one are ICP, AAS & ion standards, Chromatography standards (GC, HPLC, pesticides), Reference substances & reagents (other), Volumetric standard solutions (titration), Spectroscopy & physical property standards and Indicators & indicator solutions.
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