2540-56-9

Basic information

• Product Name: 9(Z),11(E)-OCTADECADIENOIC ACID
• Synonyms: DELTA 9 CIS DELTA 11 TRANS OCTADECADIENOIC ACID;CLA 9C,11TR;CONJUGATED (9Z,11E)-LINOLEIC ACID;CONJUGATED LINOLEIC ACID (9Z,11E);BOVINIC ACID;13-OXO-9(Z),11(E)-OCTADECADIENOIC ACID;13-OXOODE;13-KETO-OCTADECA-9Z,11E-DIENOIC ACID
• CAS NO: 2540-56-9
• Molecular Formula: C₁₈H₃₂O₂
• Molecular Weight: 280.45
• Mol File: 2540-56-9.mol
• Article Data: 27

Chemical Properties

• Boiling Point: 381.6 °C at 760 mmHg
• Flash Point: 278.5 °C
• Appearance: /
• Density: 0.911 g/cm³
• Vapor Pressure: 7.01E-07mmHg at 25°C
• Refractive Index: n20/D1.481
• Storage Temp.: −20°C
• PKA: 4.78±0.10(Predicted)
• CAS DataBase Reference: 9(Z),11(E)-OCTADECADIENOIC ACID(CAS DataBase Reference)
• NIST Chemistry Reference: 9(Z),11(E)-OCTADECADIENOIC ACID(2540-56-9)
• EPA Substance Registry System: 9(Z),11(E)-OCTADECADIENOIC ACID(2540-56-9)

Safety Data

• Hazard Codes: F,T
• Statements: 11-23/24/25-39/23/24/25
• Safety Statements: 24-36/37-45
• RIDADR: UN 1230 3/PG 2
• WGK Germany: 3
• Hazardous Substances Data: 2540-56-9(Hazardous Substances Data)

Usage

Uses

Rumenic Acid is a trans fatty acid that may potentially reduce the risk of cancer and cardiovascular diseases.?It may also prevent disease processes that lead to chronic inflammation, atherosclerosis, and diabetes.

Definition

ChEBI: An octadeca-9,11-dienoic acid having 9-cis,11-trans-stereochemistry.

Synthesis Reference(s)

Tetrahedron Letters, 27, p. 3745, 1986 DOI: 10.1016/S0040-4039(00)83869-1

InChI:InChI=1/C18H32O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h7-10H,2-6,11-17H2,1H3,(H,19,20)/b8-7+,10-9-

Upstream product

• 2578-97-4 trans-ximenynic acid 
• 2462-85-3 linoleic acid methyl ester 
• 60-33-3 linoleic acid 
• 822-10-6 (9Z,11E)-methyl octadeca-9,11-dienoate 
• 141-22-0 Ricinoleic acid 
• 544-70-7 cis-9,trans-11-octadecadienoic acid 
• 540-12-5 ricinelaidic acid 
• 822-10-6 octadeca-9,11-dienoic acid methyl ester 
• 56-23-5 tetrachloromethane 
• 111-46-6 diethylene glycol 
• 112-63-0 Methyl linoleate 
• 8001-23-8 safflower oil 
• 692-86-4 ethyl 10-undecenenoate 
• 41059-02-3 9-bromononanoic acid 

Downstream Products

• 822-10-6 octadeca-9,11-dienoic acid methyl ester 
• 544-70-7 trans-9,trans-11-octadecadienoic acid 
• 87-93-4 9r_F,10t_F,11r'_F,12t'_F-tetrahydroxy-octadecanoic acid 
• 822-10-6 (9Z,11E)-methyl octadeca-9,11-dienoate 
• 119589-84-3 9,10;11,12-diepoxy-octadecanoic acid 
• 123-99-9 azelaic acid 
• 111-14-8 oenanthic acid 
• 15719-64-9 methylammonium carbonate 
• 903581-73-7 octadeca-9t,11t-dienoyl chloride 
• 86372-29-4 (+/-)-3c-hexyl-6c-(7-methoxycarbonyl-heptyl)-cyclohex-4-ene-1r,2c-dicarboxylic acid dimethyl ester 
• 102958-03-2 8-(7-hexyl-1,3-dioxo-phthalan-4-yl)-octanoic acid 
• 102756-33-2 3-hexyl-6-(7-methoxycarbonyl-heptyl)-phthalic acid-anhydride 
• 114909-10-3 8-(4-hexyl-[1]anthryl)-octanoic acid 
• 7330-06-5 (+/-)-3c-hexyl-6c-(7-methoxycarbonyl-heptyl)-cyclohex-4-ene-1r,2c-dicarboxylic acid-anhydride 

Relevant articles and documents

Revealing ruthenium and basicity synergetic effects in Ru-MgAl catalysts for isomerization of linoleic acid to conjugated linoleic acid

Ru-MgAl catalysts were prepared by co-precipitation at different pH values (x = 7-12), with the aims of investigating the effect of pH on their catalytic performance for isomerization of linoleic acid to conjugated linoleic acid and of understanding the relationship of basicity site and ruthenium activity site. The results showed that strong basicity and highly dispersed ruthenium may be the active sites for linoleic acid isomerization. Only if all three conditions, i.e., high Ru dispersion, appropriate SMSI effect and high number of strong basicity sites, are fulfilled can highly effective active sites be formed for the isomerization of linoleic acid to conjugated linoleic acid. A possible reaction mechanism for the isomerization was also proposed.

Investigation of Micellization and Vesiculation of Conjugated Linoleic Acid by Means of Self-Assembling and Self-Crosslinking

Bioactive and biocompatible conjugated linoleic acid (CLA) has been only considered as a food or medicine ingredient due to its rare natural occurrence. In this work, the surface activities and pH-induced self-assembling behaviors of the semi-synthetic CLA molecules into micelles or vesicles were systematically investigated. First, the self-assembling of CLA was studied in detail, and it was found that aside from temperature and ionic strength, pH is the prominent factor affecting the self-assembling of CLA. Moreover, stable CLA ufasomes (unsaturated fatty acid liposomes) in uniform size were obtained by self-crosslinking of the CLA ufasomes, and the morphologies of the crosslinked CLA assemblies were recorded by transmission electron microscopy, which made known the pH-induced formation of the CLA ufasomes or the CLA micelles. The crosslinked CLA assemblies presented improved properties such as a higher calcium stability, a lower lime soap dispersing requirement and a better solubilization ability than that of the CLA molecules themselves or the pre-crosslinked linoleic acids. These investigations could be helpful for comprehensively understanding effects of environment factors on self-assembling behaviors of conjugated fatty acids and responsive polymerization of polymerizable surfactants.

Method For The Production Of Conjugated Polyunsaturated Fatty Acids With Heterogenous Catalysts

The present invention relates to an improved process for the production of conjugated polyunsaturated fatty acids (PUFA), preferably conjugated linoleic acid (CLA), using finely dispersed heterogeneous metal catalysts on a mesoporous support, in the absence of Hg. The present invention also relates to a method to increase the large microporosity and (optionally) the small mesoporosity of a zeolite, thus obtaining a modified zeolite having a large and highly accessible internal surface.