Amines, C12-14-tert-alkyl

[Superflan]

Hi,

Out of curiosity, I'm wondering what's the sole purpose of Amines, C12-14-tert-alkyl contained in at least 2 mineral axle oil I just bought.

Although it states on the bottle that it can cause allergic reactions.

 

[Linctex]

CAS No.: 68955-53-3
Synonyms: 9,9-dimethyldecan-1-amine, 10,10-Dimethyl-1-undecanamine and 11,11-dimethyldodecan-1-amine;
Formula: C39H87N3
Exact Mass: 597.69000
Molecular Weight: 598.12800
PSA: 78.06000
LogP: 14.43690

http://www.molbase.com/en/name-9%2C9-dimethyldecan-1-amine%2C%2010%2C10-Dimethyl-1-undecanamine%20and%2011%2C11-dimethyldodecan-1-amine.html

Density: 0.801g/cm3
Boiling Point: 224.7ºC at 760 mmHg
Flash Point: 85ºC
Refractive Index: 1.441

Sounds like something I would like to keep out of my liver and kidneys

 

[sloinker]

Pretty scientific when you read about them. Used all over the place in many products, medicines and food additives and for lubricants as wear and friction modifiers among other uses.

 

[SonofJoe]

I'm an engine oil additive guy so axle oils aren't exactly my area of expertise.

Alkyl amines aren't, to my knowledge, commonly used in engine oils. Other amines ARE however used. Di-phenyl amines are common antioxidants, polyamines are used in the manufacture of ashless dispersants & certain oil soluble Moly additives are based on amine chemistry. But simple alkyl amines? Nah! For one thing, they would be extremely aggressive to fluor-elastomer seals.

That said, I did a bit of Googling around and I read that alkyl amines are being used to suspend nano-particles in oil. This might make sense in axle oils where friction is of critical importance. StilI I might say avoid any oil which contains alkyl amines & go for something a bit less aggressive.