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34877

Sigma-Aldrich

Agua

HPLC Plus, suitable for HPLC, suitable for SM 4500 - NH3

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About This Item

Fórmula lineal:
H2O
Número de CAS:
7732-18-5
Peso molecular:
18.02
Beilstein/REAXYS Number:
2050024
EC Number:
231-791-2
MDL number:
MFCD00011332
UNSPSC Code:
41116105
PubChem Substance ID:
329755083
NACRES:
NA.21

product name

Agua, HPLC Plus

grade

HPLC Plus

agency

suitable for SM 4500 - NH3

vapor density

<1 (vs air)

vapor pressure

3 mmHg

form

liquid

shelf life

limited shelf life, expiry date on the label

technique(s)

HPLC: suitable

impurities

≤0.0003% non-volatile matter
≤1 ppb fluorescence (quinine) at 254 nm
≤1 ppb fluorescence (quinine) at 365 nm

refractive index

n20/D 1.34 (lit.)

pH

6.0-8.0 (25 °C)

bp

100 °C (lit.)

mp

0 °C (lit.)

density

1.000 g/mL at 3.98 °C (lit.)

anion traces

chloride (Cl-): ≤0.1 mg/kg
fluoride (F-): ≤0.1 mg/kg
nitrate (NO3-): ≤0.1 mg/kg
sulfate (SO42-): ≤0.1 mg/kg

HPLC-gradient

≤1 mAU at 254 nm
≤5 mAU at 210 nm

SMILES string

O

InChI

1S/H2O/h1H2

InChI key

XLYOFNOQVPJJNP-UHFFFAOYSA-N

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General description

El agua de calidad HPLC Plus es útil para la elución en gradiente (cromatografía líquida de ultraalta presión) y estudios de HPLC.

Application

El agua se ha utilizado en los estudios siguientes:
  • Para preparar disoluciones de ácido clorhídrico diluido requeridas para la preparación de disoluciones patrón de aminoácidos.
  • En la etapa de extracción de la muestra durante el análisis mediante cromatografía de gases y espectrofotometría de masas (GC-MS) de aminoácidos libres (FAA) y combinados (CAA) en muestras en aerosol.
  • Preparación de productos de digestión con tripsina de muestras proteicas estándar y de muestras de leche.
  • Preparación de C60-aminopropilsílice.

Preparation Note

Producto filtrado a través de un filtro de 0,2 μm

Other Notes

Aviso importante
  • El artículo de referencia 34877-4X2.5L será descatalogado. Pida la botella 34877-2.5L que es físicamente idéntica con las mismas especificaciones exactas.

Recommended products

Descubra los reactivos LiChropur ideales para análisis mediante HPLC o LC-MS

Storage Class

12 - Non Combustible Liquids

wgk_germany

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificados de análisis (COA)

Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»

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Journal of chromatography. A, 1217(1), 143-150 (2009-12-08)
The analysis of amino acids by gas chromatography mass spectrometry (GC-MS) after their derivatization with N-(t-butyldimethylsilyl)-N-methyltrifluoroacetamide was investigated as an alternative approach for the determination of free (FAA) and combined amino acids (CAA) in aerosols. This technique showed excellent linearity
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