BIS(p-OCTYLPHENYL)AMINE

PRODUCT IDENTIFICATION
CAS NO. 101-67-7

DIOCTYLDIPHENYLAMINE

EINECS NO. 202-965-5
FORMULA C28H43N
MOL WT. 393.65
H.S. CODE  
TOXICITY  
SYNONYMS 4-Octyl-N-(4-octylphenyl)benzenamine; ODPA; 4,4'-Dioctylphenylamine;
4,4'-Dioctyldiphenylamine; Octylated Diphenylamine; Bis(p-octylphenyl)amine; Di-n-octyl diphenylamine; p,p-Dioctyldiphenylamine;

SMILES

 c1(Nc2ccc(CCCCCCCC)cc2)ccc(CCCCCCCC)cc1

CLASSIFICATION

 Phenylamine, Antioxidant

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE

brown flakes

MELTING POINT 96 C
BOILING POINT  
SPECIFIC GRAVITY

 

SOLUBILITY IN WATER Insoluble
AUTOIGNITION

 

pH  
VAPOR DENSITY  
NFPA RATINGS Health: 1; Flammability: 0; Reactivity: 0
FLASH POINT

213 C

STABILITY Stable under ordinary conditions

GENERAL DESCRIPTION & EXTERNAL LINKS
Antioxidant is a substance added in small quantities to hydrocarbons which are susceptible to oxidation, such as rubbers, plastics, foods, and oils to inhibit or slow oxidative processes, while being itself oxidized.  Antioxidants work in two different ways. In primary antioxidants (also called free-radical scavengers), antioxidative activity is implemented by the donation of an electron or hydrogen atom to a radical derivative. These antioxidants are usually hindered amines (p-Phenylene diamine, trimethyl dihydroquinolines, alkylated diphenyl amines) or substituted phenolic compounds with one or more bulky functional groups such as a tertiary butyl at 2,6 position commonly. All four major antioxidants classified by functional moiety include phenols amines, phosphites and thioesters.

http://ksundaram.tripod.com/
...The Primary antioxidants consist mainly of hindered phenols and hindered aromatic amines. They scavenge and destroy the chain propagating peroxy and alkoxy radicals before they can react with the polymer. These materials contain hydrogen atoms that can be easily donated to the chain-propagating peroxy, alkoxy,and hydroxy radicals. The alkoxy and hydroxy radicals are converted to alcohols and water, respectively, which are inert and do not hamper polymer stability. The antioxidant radicals formed are stable and do not abstract more hydrogens from polymer. A typical primary antioxidant of the hindered aromatic amine variety is AO-TMQ (Polymerized 1,2-dihydro-2,2,4-trimethylquinoline)....
The amine antioxidants are generally more powerful than the hindered phenols. This is due to a cyclic process which the amine antioxidant undergoes in which a nitroxyl radical is regenerated and consumes more radicals. A drawback of the aminic AO¡¯s is that they are oxidized to products which are more discoloring and staining than their hindered phenol counterparts. AO-1010 is exceptional among hindered phenolic AO¡¯s. It has one of the highest molecular weights in its class and is non-staining, nondiscoloring, and effective in non-black, colorable rubber compounds.......

http://www.sciencedirect.com/
Antioxidants can be divided into two broad classes, primary and secondary, depending upon their mode of action. The most broadly used primary antioxidants are hindered phenolics. Phenolic antioxidants have traditionally been based on 2,6-di-t-butyl-4-methylphenol (BHT). This functional moiety has been incorporated into larger molecules affording products with lower volatility or greater polymer compatibility. More recently, molecules have been introduced which vary in steric hindrance about the phenol and also the way in which multiple phenol functional groups are linked to form larger molecules. This has led to structures which have lower colour contribution. Surprisingly, in some cases these molecules have shown higher levels of efficiency relative to other antioxidants with similar phenol/molecular weight ratios. This has included enhanced levels of synergism with secondary antioxidants. An attempt is made to correlate structural features of these molecules to the enhanced performance and/or lower colour.
SALES SPECIFICATION

APPEARANCE

brown flakes

MONO- OCTYL DPA

10% max

MELTING POINT

84 C

HEAT LOSS

0.5% max

ASH

0.3% max

INSOLUBLES

0.3% max  (in acetone)

TRANSPORTATION
PACKING  
HAZARD CLASS  
UN NO.  
REMARKS