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432369

Sigma-Aldrich

Dimer acid, hydrogenated

average Mn ~570

Synonym(s):

Fatty acids, C18 -unsatd., dimers, hydrogenated, Hydrogenated C36 dimer fatty acid

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About This Item

CAS Number:
68783-41-5
MDL number:
MFCD00211870
UNSPSC Code:
12162002
NACRES:
NA.23

form

liquid

Quality Level

100

mol wt

average Mn ~570

impurities

<1 wt. % monomer
<2 wt. % trimer

refractive index

n20/D 1.477 (lit.)

viscosity

8,000 mPa.s(25 °C)(lit.)

acid number

190‑198 mg KOH/g

iodine value

<10

transition temp

pour point ~0 °C

density

0.95 g/mL at 25 °C (lit.)

General description

Dimer acid, hydrogenated is a fatty acid with 36 carbon atoms. It consists of a cyclohexene ring which can be synthesized by clay-catalyzed dimerization at 230-250°C.
Improves flexibility, toughness, impact resistance, dyeability and hydrolytic stability of polymers.

Application

Comonomer in polyesters, polyamides and polyurethanes.
Dimer acid, hydrogenated can be used as a corrosion inhibitor for the protection of lead metal substrates. It can also be used in polyamide based hot melting adhesives as a thermoplastic polymer for electronic boards, textiles and packaging systems.

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

572.0 °F - open cup

Flash Point(C)

300 °C - open cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

432369-250ML:
432369-BULK:
432369-VAR:
432369-1L:

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Certificates of Analysis (COA)

Lot/Batch Number
MKCV8506
MKCP5013
MKCM1737
MKCK4786
MKCD8303

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Selective formation of C36-dimer fatty acids via thiol-ene addition for copolyamide synthesis
Unverferth M and Meier MAR
European Journal of Lipid Science and Technology, 118(10), 1470-1474 (2016)
Lower purity dimer acid based polyamides used as hot melt adhesives: synthesis and properties
Freitas RFR, et al.
Journal of Adhesion Science and Technology, 29(17), 1860-1872 (2015)
Study of liquid-crystalline behaviour of aliphatic-aromatic polyamides derived from castor oil based dimer acid by DSC
Khare K, et al.
Indian Journal of Advances in Chemical Science, 2(1), 89-94 (2013)
Hydrogenated dimer acid as a corrosion inhibitor for lead metal substrates in acetic acid
De Keersmaecker M, et al.
Journal of the Electrochemical Society, 162(4), C167-C179 (2015)

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