Description
Water, ROTISOLV® HPLC Gradient Grade is high-purity water for liquid chromatography, with empirical formula H₂O, molar mass 18,02 g/mol and CAS number 7732-18-5 (EG nr. 231-791-2). It has a density of 1 g/cm³ and a boiling point of 100 °C, matching the expected physical profile of water while being positioned specifically for HPLC gradient applications in analytical laboratories. The grade is intended for chromatographic mobile-phase preparation, system flushing and related LC workflows where gradient performance and low background are critical. This ROTISOLV® HPLC Gradient Grade water from manufacturer Carl ROTH fits chromatography and liquid-chromatography reagent lines used in pharmaceutical, environmental and research settings. Laboratories can cite the CAS, EG number and molar mass in SOPs and instrument methods, using the glass litre bottle as a practical working volume for daily gradient HPLC without introducing unspecified purity claims beyond the stated grade designation.
Key features
- Spec. electric resistance (at time of preparation): ≥18 MΩ*cm
- Evaporation residue: ≤0,0003 %
- Free acid (as CH3COOH): ≤0,0002 %
- Free alkali (as NH3): ≤0,0002 %
- 210 nm: ≤5,0 mAU
- 254 nm: ≤1,0 ppb
- 365 nm: ≤0,5 ppb
- CAS number: 7732-18-5
- Pack sizes: 1 l, 2.5 l, 5 l, 20 l
- EG nr.: 231-791-2
- Empirical formula: H₂O
- Molar mass: 18,02 g/mol
- Technical Information Sheet:
- Safety Data Sheet: