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3M
FYI-0e-201378
April 12288,,2000 ing Mo [1]
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~ x 33:
Mr. Oscar Hemandez
=
US EPA/OPPT/CCD (7405)
.
401 M Street, SW
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RWaosohminEgt6o1n5,BDC 20460
HUET
Dear Oscar:
85000000005
Apesrfplarutoorofotcthaenoensguolifnongicvoalcuindta(rPyFsOuSb)mitsosEioPnAobfyda3tMa,aenndcilnofsoerdmiastiionnfoornmation on use:
afonldleoxwipnogsutrhee rfeolramtaitngotofaP*FUOsSe (aAntdtaEcxhpmoesnutre1).InfTohrimsatiinofnorPmraotfiiolne"is(pUrEeIsPe)ntaesd rcoevceormtmheencdheedmitcoa3l MpebrfyluEoPrAooOctPaPneTsmulafnoangiecmaecnitd.(COAnSe #U1E7I6P3f-o2rm3-waan1sd)fporeupraorfeidtstosalt forms (CAS #29081-56-9, 29457-72-5, 70225-14-8, 2795-39-3) that are manufactured
from the perfluorooctanc sulfonic acid.
Itis important to emphasize the following points:
=
The majorityof
involves higher
3M's fluo
molecular
rochemical production
weight functionalized
and
deri
product commercialization
vatives made from
psuelrffolnuiocroaoccitdaannedsuitlsfosnalytls falrueoraicdte.ualAly rceolmatmievrecliyaslmiazleldaamsoufinntisohfedpeprrfolduuocrtosoc(t<a2n0c0,000
Ibs/year).
~The secondary reactions producing allof these derivatives are single or sequential
batch processes that do not amountsoffluorochemical
necessarily produce residuals (unreacted
pure products. There may be varying or partially reacted starting materials
or intermediates) that are carried forward
present, these residuals can be found at a
to the final product.
concentration of 1-2
Typically,
% or less in
where
final
pprroodduuccttsioanndv,oliunmteh.e a3ggMrehgaastei,mprelpermeesnetntedroaunghalgygr1es-s2i%voefptortoaglrafmlutoorroecdhuecmeicoarl
eliminate such manufacturing residuals in the productionof commercialized products.
Someofthese fluorochemical residuals in 3M products have the potential to degrade
or metabolize to PFOS.
fluorochemical moicties
In addition, during some product use
added to the sulfonyl fluoride group
or disposal,
of POSF can
the non-
also be
removed through a varietyof degradation processes (chemical, environmental and
Ta mreestualbtoolfics)u.chIndesgurcahdaitnsitoanncweisl,l gtheenefrlaulolryobcehePmiFcOaSl.spTehceireesfourlet,imtahteerleyaprreoodtuhceerdpoatseantial
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1
on
of Eo =I 8 :
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Page 2
Mr. Oscar Hemandez US EPA/OPPT/CCD (7405)
sourcesof PFOS exposure or release than the actual production of perfluorooctanc.
sulfonic acid or its salts.
=
3flMuodrooechsehmaivcealdaptoalydmeemrosnsatnrdatfilnugortohcehsetmaibiclailtyphofohsipghahtemoelsetceruslatro
weight
various
mechanisms
ofdegradation.
commercialized
Therefore,
products is
it is
not
believed that
the principle
degradation of these materials
source of PFOS to human or
as
environmental exposure. 3M has provided to EPA as a supplemental submission
(TSCA Section 8(e) - Perfluorooctane Sulfonate -- Docket Numbers SEHQ-1180-373;
8EHQ-1180-374) the
Environment: Sources
white
, Disp
paper
ersion
entitled * Sulfonated
, Fate and Effects".
Perfluorochemicals in t
The informationin that
he
paper
contains analysis
worse case assumed all
estimatesofpotential exposure fluorochemical products could
and waste generation. completely degrade to
That PFOS
and
trheaptretsheensteecdonthsaetrvqautainvietaetsitviemlayteasso"fPPFFOOSS eeqquuiivvaalleennttss".ovOerusrtactuerreexnptousnudreerpsottaenndtiianlg tiso
PFOS.
- eEmPpAloryeeceisveatdtbhieoDmeocnaittuorr,inAgLdamtaanuffraocmtu3rMinognsiAtperhilav2e4,PF20O0S0 fionudincdatiinntghetihratsemrousmt,
The attached UEIP document shows that most PFOS is manufactured atCottage
Grove, MN
experienced
with only small numbers ofexposed employees. The exposure
by employees at the Decatur, AL site is to fluorochemical materials
that
are metabolized or hydrolyzed to PFOS.
Please feel free to contact me if you have any questions regarding this information.
Best regards,
Hitlins A Heppra Willian A. Weppner, PhD.
Director Environmental, Health, Safety & Regulatory Affairs
Specialty Material Markets Group
3M Center, Bldg. 236-1B-10 St. Paul, MN 55144
Attachment(s) = Voluntary Use and Exposure Information Profile ~ Perfluorooctane Sulfonic Acid and Its Salt Forms
2