Description
Water ammonium-free is reagent-quality water according to Reag. Ph. Eur., Chapter 4.1.1 (1095501), with CAS number 7732-18-5 and empirical formula H₂O. Molar mass is 18,02 g/mol, density is 1 g/cm³ and boiling point is 100 °C. The product is packed as 1 l in plastic. Ammonium-free water from manufacturer Carl ROTH is used where pharmacopoeial reagents of Chapter 4.1.1 require water that is free from ammonium for tests and preparations. It belongs to chemicals in pharmacopoeia quality, specifically reagents and volumetric standard solutions (Ph. Eur.) under Reagents 4.1.1. Laboratories employ this grade when an unspecified water would not meet the ammonium-free stipulation of the monograph or reagent recipe. The 1 l plastic pack suits bench-scale preparation of reagents and related aqueous solutions. Physical data for H₂O are molar mass 18,02 g/mol, density 1 g/cm³ and boiling point 100 °C, as stated for this material. Water ammonium-free, Reag. Ph. Eur., Chapter 4.1.1, thus supplies a defined 1 l quantity of ammonium-free water for pharmacopoeial laboratory work identified by CAS 7732-18-5.
Key features
- CAS number: 7732-18-5
- Pack size: 1 l plastic
- EG nr.: 231-791-2
- Empirical formula: H₂O
- Molar mass: 18,02 g/mol
- UNSPSC: 12190000
- Technical Information Sheet:
- Safety Data Sheet:
Recently viewed
You may also like
Browse related categories
Category
Analytical standards & reference materials
Sub-category
Reagents for analysis (Ph. Eur., ASTM, DIN)
Catalogue
Brand
Questions about Water ammonium-free, Reag. Ph. Eur., Chapter 4.1.1
What is this article?
Water ammonium-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.
Which category should I open next?
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.
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.
