Water for LC-MS
| Formula (Hill): | H2O |
| Density: | 1.00g/cm3 (20 °C) |
| Molar mass: | 18.02 g/mol |
| CAS number: | 7732-18-5 |
| HS code: | 28510010 |
| EC number: | 231-791-2 |
| Storage : | Store at +5 to +30 °C |
| SDS | Available |
| RTECS: | ZC0110000 |
| Odour: | Odourless |
| Form: | Liquid |
| Color: | Colourless |
| Boiling point: | 100 °C |
| Melting point: | 0 °C |
| Vapour pressure: | 23hpa (20 °C) |
| Viscosity dynamical: | 0.952 mPa*s (20 °C) |
| Spec.conductance at 25 °C | ≤ | 1.0 | μS/cm |
| (at the time of manufacturing) | |||
| Aluminium | ≤ | 10.0 | ppb |
| Calcium | ≤ | 100.0 | ppb |
| Iron | ≤ | 5.0 | ppb |
| Potassium | ≤ | 10.0 | ppb |
| Magnesium | ≤ | 20.0 | ppb |
| Sodium | ≤ | 200.0 | ppb |
| Any other metal (ICP-MS) | ≤ | 5.0 | ppb |
| Oxidizing substances | ≤ | 30.0 | ppb |
| Evaporation residue | ≤ | 5.0 | mg/l |
| Gradient grade@ 254 nm | ≤ | 0.5 | mAU |
| Gradient grade @210 nm | ≤ | 20.0 | mAU |
| Chloride | ≤ | 10.0 | ppb |
| Nitrate | ≤ | 10.0 | ppb |
| Phosphate | ≤ | 10.0 | ppb |
| Sulfate | ≤ | 10.0 | ppb |
| Suitable for LC-MS (Backgrand intensity) | ≤ | 20.0 | ppb |
Water for LC-MS is a high‑purity, analytical‑grade solvent specifically prepared for use in pharmaceutical and analytical laboratories in LC-MS applications, ensuring minimal background noise and maximum sensitivity.
🏭⚗️ Production
Produced from ultra‑pure water through multiple purification steps, including reverse osmosis, deionization, and filtration, to remove ions, organic contaminants, and particulates. Standardized for conductivity, resistivity, and low total organic carbon (TOC). Supplied in chemically resistant, tightly sealed containers to prevent contamination or microbial growth.
🔬 Properties
A clear, colorless liquid with extremely low UV absorption and negligible background signal for LC-MS analysis. Chemically stable under normal laboratory conditions. Non-flammable, non-toxic, and compatible with most HPLC and LC-MS equipment. Store in a cool, dry, well‑ventilated area in appropriate containers.
🧪 Applications
Used in pharmaceutical, biochemical, and analytical laboratories for LC-MS mobile phase preparation, sample dilution, and as a carrier for gradient or isocratic separations. Ensures minimal ion suppression, high reproducibility, and reliable mass spectrometric detection. Solutions and equipment should be handled carefully to maintain analytical-grade purity.
⚠️ Safety
Generally considered low hazard; can cause irritation if contaminated or improperly handled. Use in a clean environment with gloves and proper lab attire. Avoid contamination with incompatible chemicals or equipment. Store in tightly closed, chemically resistant containers in a cool, dry, well-ventilated area away from potential sources of contamination.
