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109959

Sigma-Aldrich

2-Ethylbutyric acid

99%

Synonym(s):

Diethylacetic acid

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About This Item

Linear Formula:
(C2H5)2CHCO2H
CAS Number:
88-09-5
Molecular Weight:
116.16
Beilstein:
1098634
EC Number:
201-796-4
MDL number:
MFCD00002670
UNSPSC Code:
12352100
PubChem Substance ID:
24846948
NACRES:
NA.22
Pricing and availability is not currently available.

vapor pressure

0.08 mmHg ( 20 °C)

Assay

99%

refractive index

n20/D 1.413 (lit.)

bp

99-101 °C/18 mmHg (lit.)

mp

−16-−13 °C (lit.)

density

0.92 g/mL at 25 °C (lit.)

functional group

carboxylic acid

SMILES string

CCC(CC)C(O)=O

InChI

1S/C6H12O2/c1-3-5(4-2)6(7)8/h5H,3-4H2,1-2H3,(H,7,8)

InChI key

OXQGTIUCKGYOAA-UHFFFAOYSA-N

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Application

2-Ethylbutyric acid is used as the internal standard for determining volatile fatty acids (VFAs) in wastewater from the constructed wetlands[1]. It is used in the determination of both free and fatty acids in milk and milk products by HPLC method with direct derivatisation[2].

Pictograms

Skull and crossbonesHealth hazard
GHS06,GHS08

Signal Word

Danger

Hazard Statements

H311,H315,H319,H373

Hazard Classifications

Acute Tox. 3 Dermal - Eye Irrit. 2 - Skin Irrit. 2 - STOT RE 2 Oral

Target Organs

Blood,Liver,Kidney

Storage Class Code

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

WGK

WGK 1

Flash Point(F)

188.6 °F - closed cup

Flash Point(C)

87 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
STBL2239
STBL0368
STBL0924
STBK3499
STBK2748

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Lin Feng et al.
Journal of chromatographic science, 46(7), 577-584 (2008-08-23)
A headspace solid-phase microextraction (HS-SPME) followed by gas chromatography coupled to flame ionization detector (GC-FID) is developed for the direct determination of volatile fatty acids (VFAs) in wastewater from constructed wetlands. Through the investigation on extraction behavior of different coatings
Yi Liu et al.
Food & function, 7(9), 3772-3781 (2016-10-08)
Indigestible resistant starches (RS) are substrates for gut-microbial metabolism and have been shown to attenuate intestinal inflammation but the supporting evidence is inconsistent and lacks mechanistic explanation. We have recently reported dietary RS type 4 (RS4) induced improvements in immunometabolic
Evangelia N Kerezoudi et al.
Food & function, 12(4), 1529-1546 (2021-02-02)
Recent data have highlighted the role of the gut microbiota and its several metabolites in maintaining bone health. Thus, gut microbiota manipulation, e.g., by prebiotics, might offer a plausible target in the fight against bone degenerative diseases. This study aimed
Faiga Magzal et al.
Scientific reports, 11(1), 4052-4052 (2021-02-20)
Insomnia is a disorder characterized by difficulty falling asleep and poor sleep continuity and is associated with increased risks for physical and cognitive decline. Insomnia with short sleep duration is considered the most biologically severe phenotype of the disorder. Evidence
H Miwa et al.
Journal of chromatography, 523, 235-246 (1990-12-07)
A high-performance liquid chromatographic (HPLC) method with direct derivatization is described for the determination of both free fatty acids and total fatty acids in milk and milk products. The method is based on the reaction of these acids with 2-nitrophenylhydrazine
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Questions

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  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

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  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

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