Standard Test Method for p-Phenylenediamine Antidegradants Purity by Gas Chromatography

Importancia y uso:

5.1 This test method is designed to assess the relative purity of production PPDs. These additives are primarily used as antiozonants for tires and other rubber or polymeric products.

5.2 Since the results of this test method are based on area normalization, it assumes that all components are eluted from the column and each component has the same detector response. Although this is not strictly true, the errors introduced are relatively small and much the same for all samples; thus, they can be ignored since the intent of the test method is to establish relative purity.

5.3 Although trace amounts of “low boilers” are present in production samples, they are disguised by the solvent peak when using packed columns (Procedure A).

Subcomité:

D11.11

Referida por:

D4676-94R21

Volúmen:

09.01

Número ICS:

71.040.30 (Chemical reagents)

Palabras clave:

antidegradant; antioxidant; antiozanant; gas chromatography; N-isopropyl-N`-phenyl-p-phenylenediamene (IPPD); N-(1,3 dimethylbutyl)-N`-phenyl-p-phenylenediamene (6PPD); N,N`bis-(14-dimethylpentyl)-p-phenylenediamene (77PD); N,N`-ditolyl-p-phenylenediamene (DTPD); phenylenediamene; p-phenylenediamene (PPD);