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Merck
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Documentos clave

CRM47791

Supelco

Linoleic Acid Methyl Ester Mix

cis/trans, certified reference material, 10 mg/mL in dichloromethane

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About This Item

Número CE:
200-838-9
Código UNSPSC:
85151701
NACRES:
NA.24
En este momento no podemos mostrarle ni los precios ni la disponibilidad

grado

certified reference material
TraceCERT®

Nivel de calidad

300

Línea del producto

TraceCERT®

Formulario

liquid

CofA

current certificate can be downloaded

envase

ampule of 1 mL

concentración

10 mg/mL in dichloromethane

técnicas

HPLC: suitable
gas chromatography (GC): suitable

aplicaciones

food and beverages

Formato

single component solution

grupo funcional

carboxylic acid
ester

temp. de almacenamiento

-10 to -25°C

Categorías relacionadas

Descripción general

This Certified Reference Material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis.

Aplicación

The CRM has been used as follows:

  • To study the retention of two FAME mixtures on three types of available commercial capillary columns having different polarities for developing a gas chromatography-mass spectrometry (GC-MS) based method to separate geometrical isomers of polyunsaturated fatty acids (PUFAs)
  • Development and validation of a GC-MS method to simultaneously determine C18 fatty acids in 20 raw milk and 30 commercial milk samples
  • Identification of fatty acid methyl ester peaks in the GC-MS analysis of C18 fatty acids in milk samples to evaluate the hydrogenation of α-Linolenic acid in the rumen of dairy cows
  • Determination of fatty acids following their methyl esterification in goat milk samples by gas chromatography coupled to a flame ionization detector (GC-FID) in the study to investigate the effect of production systems on the fatty acid composition of goat milk
  • GC-FID analysis of typical Indian ready-made snacks to determine their fatty acid composition based on Association of Official Analytical Chemists (AOAC) Official Method 996.06
  • To study the fatty acid profile of 69 different cold-pressed vegetable oil samples by gas chromatography coupled to a flame ionization detector

Otras notas

Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

Información legal

TraceCERT is a registered trademark of Merck KGaA, Darmstadt, Germany

Analito

Descripción
    cis-9,cis-12-Octadecadienoic acid methyl ester 10 % (w/w)
    cis-9,trans-12-Octadecadienoic acid methyl ester 20 % (w/w)
    trans-9,cis-12-Octadecadienoic acid methyl ester 20 % (w/w)
    trans-9,12-Octadecadienoic acid methyl ester 50 % (w/w)

Pictogramas

Health hazardExclamation mark
GHS08,GHS07

Palabra de señalización

Warning

Frases de peligro

H315,H319,H336,H351

Clasificaciones de peligro

Carc. 2 - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Órganos de actuación

Central nervous system

Código de clase de almacenamiento

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

Clase de riesgo para el agua (WGK)

WGK 2

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

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Certificados de análisis (COA)

Lot/Batch Number

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Daniel Enriquez-Hidalgo et al.
Frontiers in veterinary science, 7, 576944-576944 (2020-12-18)
The winter diet of dairy cows in Mediterranean climate regions is usually a total mixed ration with a base of conserved summer crops such as corn silage and alfalfa hay. However, there is increased labor and financial cost related to
Arkadiusz Szterk et al.
Foods (Basel, Switzerland), 11(8) (2022-04-24)
The study aimed to examine samples of different market original sheep cow and goat cheeses, in respect of the content and profile of FA with special emphasis on health-promoting FA. The content of fatty acids in the examined cheeses was

Questions

1–3 of 3 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

  3. How is the standard prepared for injection into a gas chromatograph ?

    1 answer

    1. This product is provided as a ready-to-use solution, at a nominal concentration of 10 mg/mL, so no further preparation is necessary. The typical injection volume for the GC is 1 microliter.

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