320072

Water

ACS reagent, suitable for EPA 601

• Linear Formula: H₂O
• CAS Number: 7732-18-5
• Molecular Weight: 18.02
• Beilstein/REAXYS Number: 2050024
• EC Number: 231-791-2
• MDL number: MFCD00011332
• UNSPSC Code: 12191602
• PubChem Substance ID: 329753952
• NACRES: NA.21

Properties

• product name: Water, ACS reagent
• grade: ACS reagent
• Quality Level: 200
• agency: suitable for EPA 601
• vapor density: <1 (vs air)
• vapor pressure: 3 mmHg
• form: liquid
• impurities: MnO₄^- reducers, passes test; ≤0.01% Silicate (as SiO₂); ≤0.01 ppm silicate
• refractive index: n20/D 1.34 (lit.)
• pH: 6.0-8.0 (25 °C)
• conductivity: ≤2 μmho per cm at 25 °C
• bp: 100 °C (lit.)
• mp: 0 °C (lit.)
• density: 1.000 g/mL at 3.98 °C (lit.)
• anion traces: chloride (Cl^-): ≤0.4 ppm; nitrate (NO₃^-): ≤0.4 ppm; phosphate (PO₄^3-): ≤1.0 ppm; sulfate (SO₄^2-): ≤1.0 ppm
• cation traces: heavy metals (as Pb): ≤0.01 ppm
• SMILES string: O
• InChI: 1S/H2O/h1H2
• InChI key: XLYOFNOQVPJJNP-UHFFFAOYSA-N

Description

Application

Water can be used as a:

• Solvent to ensure the appropriate deposition and recrystallization of the matrix material used in the matrix-assisted laser desorption/ionization (MALDI) analysis.
• Mobile phase component in the high-performance liquid chromatography (HPLC) method used for the separation of polar compounds.

Safety Information

• Storage Class: 12 - Non Combustible Liquids
• wgk_germany: nwg
• flash_point_f: Not applicable
• flash_point_c: Not applicable