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Merck

00612

Water

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About This Item

Linear Formula:
H2O
CAS Number:
Molecular Weight:
18.02
UNSPSC Code:
12191602
NACRES:
NB.21
PubChem Substance ID:
EC Number:
231-791-2
Beilstein/REAXYS Number:
2050024
MDL number:
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InChI key

XLYOFNOQVPJJNP-UHFFFAOYSA-N

InChI

1S/H2O/h1H2

Quality Level

impurities

≤10 μg/kg acetate, ≤10 μg/kg formiate, ≤10 μg/kg glycolate, ≤10 μg/kg oxalate

conductivity

≤2 μS/cm

bp

100 °C (lit.)

mp

0 °C (lit.)

anion traces

bromate (BrO3-): ≤1 μg/kg, bromide (Br-): ≤1 μg/kg, chlorate (ClO3-): ≤1 μg/kg, chloride (Cl-): ≤1 μg/kg, chlorite (ClO2-): ≤1 μg/kg, fluoride (F-): ≤1 μg/kg, iodide (I-): ≤1 μg/kg, nitrate (NO3-): ≤1 μg/kg, nitrite (NO2-): ≤1 μg/kg, phosphate (PO43-): ≤1 μg/kg, sulfate (SO42-): ≤1 μg/kg

cation traces

Al: ≤0.005 mg/kg, Ba: ≤0.005 mg/kg, Bi: ≤0.005 mg/kg, Ca: ≤0.01 mg/kg, Cd: ≤0.005 mg/kg, Co: ≤0.005 mg/kg, Cr: ≤0.005 mg/kg, Cu: ≤0.005 mg/kg, Fe: ≤0.005 mg/kg, K: ≤0.01 mg/kg, Li: ≤0.005 mg/kg, Mg: ≤0.005 mg/kg, Mn: ≤0.005 mg/kg, Mo: ≤0.005 mg/kg, NH4+: ≤0.01 mg/kg, Na: ≤0.01 mg/kg, Ni: ≤0.005 mg/kg, Pb: ≤0.005 mg/kg, Sr: ≤0.005 mg/kg, Zn: ≤0.005 mg/kg

form

liquid

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General description

Water is of high purity and is used especially for the needs of ion chromatography (IC). It is suitable for trace analysis of anions, cations and some organics, which are usually analyzed by ion chromatography (IC).

Application

Metrohm IC application note AN-S-336:Anion traces on the Metrosep A Supp 16 - 250/2.0 after Inline Preconcentration and Matrix Elimination

Metrohm IC application note AN-Q-008:Trace monitoring in distilled water using ion chromatography.

Metrohm IC application note AN-C-159:Cation traces on the Metrosep C 4 - 250/2.0 column after Inline Preconcentration with matrix elimination.

Metrohm IC application note AN-S-304:Variable Inline Preconcentration including Matrix Elimination for trace anion analysis (MiPCT-ME).

Other Notes

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Storage Class

12 - Non Combustible Liquids

wgk

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves


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M Lieveld et al.
Virchows Archiv : an international journal of pathology, 465(6), 703-713 (2014-10-12)
Giant cell tumor of bone (GCTB) displays worrisome clinical features such as local recurrence and occasionally metastatic disease which are unpredictable by morphology. Additional routinely usable biomarkers do not exist. Gene expression profiles of six clinically defined groups of GCTB
Liming Zhou et al.
Nature, 509(7498), 86-90 (2014-04-25)
Tropical forests are global epicentres of biodiversity and important modulators of climate change, and are mainly constrained by rainfall patterns. The severe short-term droughts that occurred recently in Amazonia have drawn attention to the vulnerability of tropical forests to climatic
Katrin Linke et al.
Biochimica et biophysica acta, 1837(1), 14-32 (2013-08-28)
Water is clearly important for the functioning of Photosystem II (PSII). Apart from being the very substrate that needs to be transported in this water oxidation enzyme, water is also vital for the transport of protons to and from the
Susu Duan et al.
Nature communications, 5, 5029-5029 (2014-10-10)
Oseltamivir-resistant H1N1 influenza viruses carrying the H275Y neuraminidase mutation predominated worldwide during the 2007-2009 seasons. Although several neuraminidase substitutions were found to be necessary to counteract the adverse effects of H275Y, the order and impact of evolutionary events involved remain
Boris Nowka et al.
Applied and environmental microbiology, 81(2), 745-753 (2014-11-16)
Nitrification has an immense impact on nitrogen cycling in natural ecosystems and in wastewater treatment plants. Mathematical models function as tools to capture the complexity of these biological systems, but kinetic parameters especially of nitrite-oxidizing bacteria (NOB) are lacking because

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