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Documenti fondamentali

N29902

Sigma-Aldrich

Nonanoic acid

96%

Sinonimo/i:

Acid C9, Pelargonic acid

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About This Item

Formula condensata:
CH3(CH2)7COOH
Numero CAS:
Peso molecolare:
158.24
Beilstein:
1752351
Numero CE:
Numero MDL:
Codice UNSPSC:
12352100
ID PubChem:
NACRES:
NA.22

Densità del vapore

5.5 (vs air)

Livello qualitativo

Tensione di vapore

<0.1 mmHg ( 20 °C)

Saggio

96%

Stato

liquid

Limite di esplosione

9 %

Indice di rifrazione

n20/D 1.432 (lit.)

P. ebollizione

268-269 °C (lit.)

Punto di fusione

9 °C (lit.)

Densità

0.906 g/mL at 25 °C (lit.)

Stringa SMILE

CCCCCCCCC(O)=O

InChI

1S/C9H18O2/c1-2-3-4-5-6-7-8-9(10)11/h2-8H2,1H3,(H,10,11)
FBUKVWPVBMHYJY-UHFFFAOYSA-N

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Pittogrammi

Exclamation mark

Avvertenze

Warning

Indicazioni di pericolo

Classi di pericolo

Eye Irrit. 2 - Skin Irrit. 2

Codice della classe di stoccaggio

10 - Combustible liquids

Classe di pericolosità dell'acqua (WGK)

WGK 1

Punto d’infiammabilità (°F)

278.6 °F - Pensky-Martens closed cup

Punto d’infiammabilità (°C)

137 °C - Pensky-Martens closed cup

Dispositivi di protezione individuale

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter


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Heptanoic acid &#8805;99.0% (GC)

Sigma-Aldrich

75190

Heptanoic acid

Flemming Andersen et al.
Contact dermatitis, 55(3), 148-154 (2006-08-22)
The term 'anti-irritant' (AI) was coined in 1965 by Goldemberg to describe a diverse group of topical product ingredients, which were able to reduce the irritation potential of other more irritating ingredients in the same product. 'AIs' are being added
Flemming Andersen et al.
Contact dermatitis, 55(3), 155-159 (2006-08-22)
So-called anti-irritants (AI) are widely used in cosmetic formulations, with the aim of reducing irritation from substances in the formulation. It may also be claimed that they are 'soothing' and 'healing' ingredients. However, the proof for these claims is circumstantial.
Natalia Kuzmina et al.
Contact dermatitis, 49(1), 26-31 (2003-12-04)
To assess interlaboratory variability in the measurement of skin electrical impedance (IMP), we evaluated irritant reactions to sodium lauryl sulfate (SLS) (2%) and nonanoic acid (NAA) (40%) in 2 laboratories. We studied the patch test responses in 40 healthy male
Anders Clemmensen et al.
The Journal of investigative dermatology, 130(9), 2201-2210 (2010-04-30)
The pathogenesis of irritant contact dermatitis (ICD) is poorly understood, and genes participating in the epidermal response to chemical irritants are only partly known. It is commonly accepted that different irritants have different mechanisms of action in the development of
Zhiyong Sun et al.
Applied microbiology and biotechnology, 74(1), 69-77 (2006-10-26)
Pseudomonas putida KT2440 grew on glucose at a specific rate of 0.48 h(-1) but accumulated almost no poly-3-hydroxyalkanoates (PHA). Subsequent nitrogen limitation on nonanoic acid resulted in the accumulation of only 27% medium-chain-length PHA (MCL-PHA). In contrast, exponential nonanoic acid-limited

Protocolli

In this study, SPME was used for the analysis of free fatty acids in Parmesan cheese using a 65 μm Carbowax/divinylbenzene (DVB) SPME fiber. Headspace extraction of the cheese sample was conducted at 65 °C for 15 minutes and analyzed by GC with FID detection. SPME is ideal for analyzing the volatiles associated with solid food samples. The phase chemistry of the Nukol GC column provides excellent peak shape of acidic compounds.

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