health and safety plan solid waste management unit assessment

STODDARD SOLVENT 67-2
l Log (Octanol-Water Partition Coefficient),
log K : 3.16-7.06 (f)
PHYSICO- l Soil Ad&don Coefficient, Koc:
CHEMICAL 700-5.5 x 10' ("1
DATA l Henry's Law Constant (atm*m3/mol at 2O'C):
(continued) 4.4 x lo-' - 7.4 (*)
l Bioconcentration Factor: no data ( 1
Stoddard solvent hydrocarbons are expected to be relatively
mobile and moderately persistent in most soil systems. Persistence
in deep soils and ground water may be higher. VOlatilization.
photooxidation and biodegradation are potentially
important fate procemses. Surface spills are expected to
PERSISTENCE be weathered by evaporation and photooxidation. Downward mi-
IN THE SOIL- gration of weathered surface spills and sub-surface dischar-
WATER SYSTEM ges represent a potential threat to underlying ground water.
Biodegradation of C,-C12 hydrocarbons is expected to be.significant
under environmental conditions favorable to microbial
oxidation: naturally-occurring, hydrocarbon-degrading
microorganisms have been isolated from polluted soils and,
to a lesser extent, non-polluted soils.
PATHWAYS
OF
EXPOSURE
Tne prrnrry pathway or concern rrom nne sorwgrouna-wa-r
systems is the contamination of ground water drinking water
supplies resulting from large spills of Stoddard solvent or
leaking underground storage tanka. Vapors from leaked or
spilled solvent mey diffuse through soils and migrate into
strrrctures resulting In inhalation exposures. Inhalation
exposures may also occur from the direct volatilization of
surface spills. Ingestion with food is not expected to be
significant.
eye8,
nose
cause skin irritation.
-- no data
XL0 (mg/m3)
inhalation [cat] (47)
10,000*2.5 hr.
Kar#O of ValWS for representative hydrocarbons from major component classes
(see Table 67-2).
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