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♥ Executive standard: Q/YTH 001-2006
♥ English name: Antioxidant H
♥ English another name: N,N-diphenyl-p-phenylenediamine
♥ English abbreviation: DBS
♥ CAS RN :74-31-7
1. Physical and chemical properties:
1.1 Appearance: Greyish brown powder
1.2 Molecule formula: C18H16N2
1.3 Molecule weight: 260.34
1. Technique indexes:
Item | Index | ||
Refined | 1stgrade | 2ndgrade | |
Initial melting point,°C | ≥140.0 | ≥135.0 | ≥125.0 |
Ash content , %(m/m) | ≤0.40 | ≤0.40 | ≤0.40 |
Decrement by heating ,%(m/m) | ≤0.40 | ≤0.40 | ≤0.40 |
Remainder through sieving (100),% (m/m) | ≤1.0 | ≤1.0 | ≤1.0 |
Appearance | Greyish brown powder | ||
Application
It's used for those rubbers and latices of natural, styrene-butadiene, acrylonitrile-butadiene,cis-1,4-polybutadiene,butyl,butylhedroxyl,cis-1,4-polyisopreneetc,so that to possess them those properties such as good resistance to many times of flexure and chap-resisting , highten the elongating strength , strengthen the defending function to hot-oxygen , ozone and some harmful metals such as copper , manganese and so on , and do not influence vulcanization of those rubbers.
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