432369

Dimer acid, hydrogenated

average M_n ~570

• Synonym(s): Fatty acids, C18 -unsatd., dimers, hydrogenated, Hydrogenated C36 dimer fatty acid
• CAS Number: 68783-41-5
• MDL number: MFCD00211870
• UNSPSC Code: 12162002
• NACRES: NA.23

Properties

• form: liquid
• mol wt: average M_n ~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.)

Description

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.

Safety Information

• Storage Class: 10 - Combustible liquids
• wgk_germany: WGK 1
• flash_point_f: 572.0 °F - open cup
• flash_point_c: 300 °C - open cup
• ppe: Eyeshields, Gloves