N-(1,3-Dimethylbutyl)-N

OECD SIDS
N-(1,3-DIMETHYLBUTYL)-N´-PHENYL-1,4-PHENYLENEDIAMINE
1. GENERAL INFORMATION ID: 793-24-8
DATE: 11.05.2005
6PPD were released in Germany in the year 2000. With the age of the
tyres the PPD content decreases sharply (John et al. 1984) to about 0.1 %
(Baumann and Ismeier 1998). Thus, it is more likely that the amount of
6PPD in tyre abrasion particles is less than 100 t/a.
Flag : Critical study for SIDS endpoint
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Source of exposure : Environment: exposure through recovery / waste disposal
Exposure to the : Substance
Result : After their use rubber articles might be a source of environmental 6PPD.
The amount of rubber wastes in Germany is estimated to be 1 Mio. t, of
which 55 % are used tyres. For 1993, the fate of 91 % of the used tyres
was traced. Only 2 % of tyres were landfilled in 1993. On the other hand,
most other used rubber products were deposited after use, in 1990 about
370,000 t/a (Löffler 1998). Assuming the 6PPD content to be 0.8 %, about
3000 t 6PPD were transfered to dumps in 1990 in Germany. Since 1993,
the landfilling of wastes containing more than a limited amount of organics
is prohibited (e.g. 3 % TOC in household wastes, TA Siedlungsabfall 1993)
in Germany. The amount of rubber products deposited was decreased
considerably due to increased
· recycling of used rubber e.g. in road or sports ground covers, as
insulation material, by pyrolysis
· thermic recycling e.g. as a fuel in cement production
· waste incineration.
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1.11 ADDITIONAL REMARKS
1.12 LAST LITERATURE SEARCH
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