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1-Methylnaphthalene CAS 90-12-0 Assessor A: Andreas
Neymeyer, Buro
Happold
Assessor B: Mike Rogers, OPUS
JOYNES PIKE Ltd
Final review:
Panel/SF
Date 09/04/2009 Date 09/04/2009 Date 28/08/2009
MDI
Recommended
MDIoral
n/a
Units
Justification: Exposure to methylnaphthalenes is mainly by inhalation.
Organisation Date Media Value Units Description Reference Web link
MDI
Recommended
MDIinh
Units
10 ug day-1
Justification: Based on a single source of information available (ATSDR).
Estimate is based on ambient air samples taken from 64 locations and
assuming human daily intake of 20 m3.
Organisation Media Value Units Description Reference Web link
US Agency for Toxic Substances
and Disease Registry (ATSDR)
Toxicological Profiles and
Minimal Risk Levels
27/03/2009 Air 10 ug day-1 Exposure to
methylnaphthalen
es is mainly by
inhalation. The
estimated average
daily intake from
ambient air may be
Estimate is based
on ambient air
samples taken
from 64 locations
and assuming
human daily intake
of 20 m3
Shah and Heyerdahl 1988 in
Research Triangle Institute. 1995.
TOXICOLOGICAL PROFILE FOR
NAPHTHALENE, 1-
METHYLNAPHTHALENE, AND 2-
METHYLNAPHTHALENE. Prepared
for: U.S. DEPARTMENT OF HEALTH
AND HUMAN SERVICES Public
Health Service Agency for Toxic
Substances and Disease Registry
(http://72.30.186.56/search/cache
ei=UTF-8&p=NAPHTHALENE%2C+1-
METHYLNAPHTHALENE%2C+AND+2-
METHYLNAPHTHALENE&rd=r1&fr=y
fp-t-
501&u=www.regulations.gov/fdms
public/ContentViewer%3FobjectId%
3D09000064800c0b6d%26dispositi
on%3Dattachment%26contentType
%3Dpdf&w=naphthalene+1+methyl
naphthalene+2+methylnaphthalene
&d=MPzhTExISdsK&icp=1&.intl=uk)
www.atsdr.cdc.gov/
Page 1 of 1 EIC proforma 1-methylnaphthalene.xls 28/08/2009