Water
CAS 7732-18-5
EC 231-791-2
Formula H2O
MW 18 g/mol
Solvents Water TreatmentPharmaceuticals & HealthcareFood & NutritionBiotechnology & Life Sciences CatalysisSolvent & Carrier
Description
Water (CAS 7732-18-5, EC 231-791-2, H2O) is an inorganic compound also referred to as oxidane, pure water, purified water, or R 718 in refrigerant classification. It carries no E-code designation and is classified under HS code 28530010 for trade purposes.
In pharmaceutical manufacturing, purified water acts as the primary solvent for active ingredient dissolution and granulation, where its polarity drives ionic and hydrogen-bond interactions with solute molecules. In chemical synthesis, it functions as a catalyst or reaction medium, facilitating hydrolysis and condensation reactions without contributing to the organic load of the final product.
Water is available in grades including Purified Water Ph.Eur., USP Purified Water, FCC-grade, and ultrapure Milli-Q quality for laboratory and biotech applications. It is fully REACH-compliant and supplied in formats ranging from IBCs and tankers to laboratory-scale containers depending on purity grade.
In pharmaceutical manufacturing, purified water acts as the primary solvent for active ingredient dissolution and granulation, where its polarity drives ionic and hydrogen-bond interactions with solute molecules. In chemical synthesis, it functions as a catalyst or reaction medium, facilitating hydrolysis and condensation reactions without contributing to the organic load of the final product.
Water is available in grades including Purified Water Ph.Eur., USP Purified Water, FCC-grade, and ultrapure Milli-Q quality for laboratory and biotech applications. It is fully REACH-compliant and supplied in formats ranging from IBCs and tankers to laboratory-scale containers depending on purity grade.
Physical Properties
| Melting Point | 0 °C |
| Boiling Point | 100 °C |
| Density | 1.3019 g/cm³ |
| Flash Point | 100°C |
| Appearance | colourless liquid |
| Color | colorless |
| Odor | at 100.00?%. odorless |
| Form | powder |
| Water Solubility | Soluble in water. Insoluble in polar liquids. |
| Vapor Pressure | 3 mm Hg ( 37 °C) |
| Refractive Index | n 20/D 1.34(lit.) |
| pH | 14 (H2O, 20°C) |
| Log P | -1.380 (est) |
Trade & Regulatory
| HS Code | 28530010 |
| Storage Class | 12 - Non Combustible Liquids |
| WGK (Germany) | nwg |
Other Names
oxidanepure waterhydrogen oxideR 718AquafinaMilli-Q waterPurified WaterDOCTOR SOLUTIONdihydrogenoxide
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