Description
Water ROTIPURAN® Ultra is high-purity laboratory water with empirical formula H₂O, CAS number 7732-18-5 and molar mass 18,02 g/mol. It has a density of 1 g/cm³ and a boiling point of 100 °C, providing a clearly defined solvent and diluent for sensitive analytical work. The EG number is 231-791-2. Laboratories use such water for blank preparation, standard dilution, rinsing and matrix matching where low residual contamination is essential. This ROTIPURAN® Ultra water from manufacturer Carl ROTH supports reproducible instrumental methods and environmental or process monitoring protocols. Documented molar mass, density and boiling point aid method transfer, SOP writing and day-to-day reagent control across routine and research laboratories.
This article belongs on Analytical grade solvents (p.a.), in Solvents.
Key features
- Colour (APHA): ≤10
- Chloride (Cl): ≤1 ppb
- Phosphate (PO4): ≤1 ppb
- Sulphate (SO4): ≤1 ppb
- Aluminium (Al): ≤20 ppt
- Antimony (Sb): ≤10 ppt
- Arsenic (As): ≤10 ppt
- Barium (Ba): ≤10 ppt
- Beryllium (Be): ≤10 ppt
- Lead (Pb): ≤10 ppt
- CAS number: 7732-18-5
- Pack sizes: 500 ml, 1 l, 2 l
- EG nr.: 231-791-2
- Empirical formula: H₂O
- Molar mass: 18,02 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
Recently viewed
You may also like
Questions about Water , ROTIPURAN® Ultra, 500 ml, LDPE
What is this article?
Water , ROTIPURAN® Ultra, 500 ml, LDPE is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Analytical grade solvents (p.a.), inside Solvents, in Lab chemicals.
An analytical-grade solvent, often marked p.a., has impurity limits tight enough for classical analysis and for preparing reagents. It is not automatically low enough in UV absorbance for HPLC, and it is not dry enough for a water-sensitive reaction. The grade is the purchase.
A solvent dissolves. The grade says which impurities are low enough for the method. Analytical grade is the ordinary pure solvent. HPLC and LC-MS grades limit the absorbance and the ions that would become peaks or background. A dry solvent has had water removed. A deuterated solvent is for NMR, where the hydrogen signal would otherwise drown the sample. Technical grade is for cleaning and for synthesis that does not need a chromatogram. Identity is on PubChem. Names follow IUPAC. Hazards follow ECHA, the CLP Regulation and REACH.
Which category should I open next?
The category is Solvents. The sub-category is Analytical grade solvents (p.a.). The catalogue is Lab chemicals.
Shelves beside this one are HPLC & LC-MS grade solvents, Dry & deuterated solvents (NMR, synthesis), Technical & synthesis grade solvents and Green & alternative solvents.
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.
How does ordering and shipping work?
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.