Annex C           Derivation of Toxicity Reference Dose for Marine Mammals

 

Toxicological effects data were reviewed from various scientific literature, database and guidelines, including toxicological profiles of ATSDR, Sample et al. (1996), IRIS Database, WHO (2000) and NHMRC (2004).  As toxicological data are not available specifically for dolphins or porpoises, it was necessary to use toxicological data for surrogate species.  The toxicological data reviewed were summarized at the end of this Annex.

 

The following rules are adopted to derive COC-specific toxicity reference dose (equivalent to a chronic No Observable Adverse Effect Level (NOAEL)) for marine mammals from the toxicological data reviewed, based on the hierarchy described in SSDS/EIAS DRA (1998):

·         Rule 1: Toxicity data shall be ecologically relevant to the Study

o        Ecological endpoint: ecologically relevant endpoint such as reproduction, development and survival (desired endpoint) shall be used when available

·         Rule 2: For exposure duration, chronic exposure is preferred to subchronic exposure; subchronic exposure is preferred to acute exposure

·         Rule 3: The following framework shall be followed for selection of study endpoint:

o        If highest reported NOAEL is below all available LOAELs (Lowest Observed Adverse Effect Level) across all species for the desired endpoints à the highest NOAEL is selected

o        If a LOAEL for a test species is same to or below the highest NOAEL (either from the same test species or another species) à the highest NOAEL is not selected; the highest NOAEL which fells below the lowest LOAEL is selected    

o        If the lowest NOAEL is greater than the lowest LOAEL (of a different study) à the lowest available LOAEL is selected

o        If only one NOAEL and LOAEL are available à the lowest of the two values is selected

·         Rule 4: UF shall be applied to convert a toxicity endpoint (not a chronic NOAEL) to a chronic NOAEL (adopted from USEPA (1999b)):

o        Chronic LOAEL should be multiplied by a UF of 0.1

o        Subchronic NOAEL should be multiplied by a UF of 0.1

o        Acute lethal value (such as LD50) should be multiplied by an UF of 0.01

·         Rule 5: UF shall be applied to extrapolate a NOAEL for one type of organism to another:

o        NOAEL = NOAEL of organism in different family but same order x 0.5

o        NOAEL = NOAEL of organism in different order but same class x 0.5

o        NOAEL = NOAEL of organism which is non-protected species x 0.5 

 

The derived toxicity reference doses are presented in Table 1.

Table 1    Toxicity Reference Doses

COC

Toxicological Data Adopted

(mg/kg/d)

UF Used

Toxicity Reference Dose Derived (mg/kg/d)

Bromoform

100, chronic NOAEL (reproductive effect) for mouse

0.5 x 0.5 x 0.5

= 0.125

12.5

Chloroform

30, chronic NOAEL (reproductive effect) for dog

0.5 x 0.5 x 0.5

= 0.125

3.75

Dibromochloromethane

80, chronic NOAEL (reproductive effect) for rat

0.5 x 0.5 x 0.5

= 0.125

10.0

Dibromoacetic acid

2, subchronic NOAEL (reproductive effect) for rat

0.5 x 0.5 x 0.5 x 0.1 = 0.0125

0.025

Chloroacetic acid

15, chronic LOAEL (decreased survival) for rat

0.5 x 0.5 x 0.5 x 0.1 = 0.0125

0.1875


 

COC

Toxicological Data Adopted

(mg/kg/d)

UF Used

Toxicity Reference Dose Derived (mg/kg/d)

Dichloroacetic acid

7.6, subchronic NOAEL for mice

0.5 x 0.5 x 0.5 x 0.1 = 0.0125

0.095

Trichloroacetic acid

36, subchronic NOAEL for rat

0.5 x 0.5 x 0.5 x 0.1 = 0.0125

0.45

Total residual chlorine

15, chronic NOAEL for rats and mice

0.5 x 0.5 x 0.5

= 0.125

1.875

Tetrachloroethylene

386, chronic LOAEL for mouse

0.5 x 0.5 x 0.5 x 0.1 = 0.0125

4.825

Trichloroethylene

500, chronic LOAEL for rat

0.5 x 0.5 x 0.5 x 0.1 = 0.0125

6.25

2,4,6-trichlorophenol

1300, chronic NOAEL for mouse

0.5 x 0.5 x 0.5

= 0.125

162.5

Hexachlorobenzene

11, chronic LOAEL for dog

0.5 x 0.5 x 0.5 x 0.1 = 0.0125

0.1375

Beta-BHC

0.2, chronic NOAEL for rat

0.5 x 0.5 x 0.5

= 0.125

0.025

Gamma-BHC

32, chronic LOAEL for rat

0.5 x 0.5 x 0.5 x 0.1 = 0.0125

0.4

Aluminum

49, chronic NOAEL for mouse

0.5 x 0.5 x 0.5 x 0.1 = 0.125

6.125

Antimony

1.25, chronic LOAEL for mouse

0.5 x 0.5 x 0.5 x 0.1 = 0.0125

0.015625

Barium

15, chronic NOAEL for rat

0.5 x 0.5 x 0.5

= 0.125

1.875

Chromium (III)

2,737, chronic NOAEL for rat

0.5 x 0.5 x 0.5

= 0.125

342.125

Copper

12, chronic NOAEL for mink

0.5 x 0.5 x 0.5

= 0.125

1.5

Lead

8, chronic NOAEL for rat

0.5 x 0.5 x 0.5

= 0.125

1

Nickel

40, chronic NOAEL for rat

0.5 x 0.5 x 0.5

= 0.125

5

Selenium

0.21, chronic NOAEL for rat

0.5 x 0.5 x 0.5

= 0.125

0.02625

Silver

222.2, chronic LOAEL for rat

0.5 x 0.5 x 0.5 x 0.1 = 0.0125

2.7775

Tin

23.4, chronic NOAEL for mouse

0.5 x 0.5 x 0.5

= 0.125

2.925

Vanadium

2.1, chronic LOAEL for rat

0.5 x 0.5 x 0.5 x 0.1 = 0.0125

0.02625

Zinc

160, chronic NOAEL for rat

0.5 x 0.5 x 0.5

= 0.125

20

Ammonia

412, subchronic NOAEL for rat

0.5 x 0.5 x 0.5 x 0.1 = 0.0125

5.15

Dioxins and furans (TEQ)

7.1E-5, chronic NOAEL for rat

0.5 x 0.5 x 0.5

= 0.125

8.875E-6

Toluene

260, chronic LOAEL for mouse

0.5 x 0.5 x 0.5 x 0.1 = 0.0125

3.25

Diazinon

12, chronic NOAEL for rat

0.5 x 0.5 x 0.5

= 0.125

1.5

Malathion

359, chronic LOAEL for rat

0.5 x 0.5 x 0.5 x 0.1 = 0.0125

4.4875

 

Toxicological Data of COCs Reviewed

 

NOAEL (mg/kg/d)

LOAEL (mg/kg/d)

Source

Bromoform

Rat (Fischer-344) male

103wk, 5d/wk (chronic)

 

200 (decreased survival)

ATSDR

Rat (Fischer-344) male

103wk, 5d/wk (chronic)

100 (reproductive)

200 (reproductive)

Rat (Fischer-344) female

103wk, 5d/wk (chronic)

200 (reproductive)

 

Mouse (B6C3F1) male

103wk, 5d/wk (chronic)

100 (reproductive)

 

Mouse (B6C3F1) female

103wk, 5d/wk (chronic)

200 (reproductive)

 

Rat, subchronic oral gavage bioassay

17.9 (hepatic lesions)

35.7 (hepatic lesions)

IRIS

Rat, 13 weeks oral gavage bioassay (subchronic)

25 (hepatic lesions)

 

WHO EHC 216

Chloroform

Rat (Osborne-Mendel), male

78wk, 5d/wk, 1 time/d (chronic)

180 (reproductive)

90 (decreased survival)

ATSDR

Rat (Osborne-Mendel), female

78wk, 5d/wk, 1 time/d (chronic)

200 (reproductive)

100 (decreased survival)

Mouse (B6C3F1), female

78wk, 5d/wk, 1 time/d (chronic)

477 (reproductive)

477 (decreased survival)

Mouse (B6C3F1), male

78wk, 5d/wk, 1 time/d (chronic)

277 (reproductive)

 

Dog (Beagle)

7.5yr, 6d/wk (chronic)

30 (reproductive)

 

Dog

Chronic oral bioassay

 

12.9 (moderate/marked fatty cyst formation in the liver and elevated SGPT)

IRIS

Mice

3 weeks, administration in corn oil (subchronic)

10 (cytolethality and regenerative hyperplasia)

 

WHO EHC 216

Rat

13 wk (subchronic)

15 (liver, kidney gonad condition)

41 (liver, kidney gonad condition)

ORNL

Dibromochloromethane

Mouse (B6C3F1)

105wk, 5d/wk (chronic)

 

100 (decreased survival)

ATSDR

Rat (Fischer-344)

2yr, 5d/wk (chronic)

80 (reproductive)

 

Mouse (B6C3F1)

105wk, 5d/wk (chronic)

100 (reproductive)

 

Rat

Subchronic gavage bioassay

21.4 (hepatic lesions)

42.9 (hepatic lesions)

IRIS

Rat

13 week corn oil gavage (subchronic)

30 (hisopathological effect)

 

WHO EHC 216


 

 

NOAEL (mg/kg/d)

LOAEL (mg/kg/d)

Source

Dibromoacetic acid

Rat, male

79 days (subchronic)

2 (reproductive)

 

WHO EHC 216

Chloroacetic acid

Rat

2-year (chronic)

 

15 (decreased survival)

NHMRC

Dichloroacetic acid

Mice

90-day (subchronic)

7.6

 

NHMRC

Dog

Subchronic oral

 

12.5 (lesions in the testes, cerebrum, cerebellum, and liver)

IRIS

Mice

8 weeks (subchronic)

40 (hepatomegaly and glycogen accumulation)

100 (hepatomegaly and glycogen accumulation)

WHO EHC 216

Trichloroacetic acid

Rat, male

90-day (subchronic)

36

 

NHMRC

Mice

Long-term study

40 (hepatic toxicity)

 

WHO EHC 216

Total residual chlorine

Rat

Chronic drinking water study

14.4

 

IRIS

Rats and mice

2-year drinking water study (chronic)

15

 

NHMRC, WHO EHC 216

Tetrachloroethylene

Rat

(Subchronic test)

14 (hepatotoxicity)

 

IRIS

Rat

(Subchronic test)

14

 

NHMRC

Rat, male

(Chronic test)

 

471 (decreased survival)

ATSDR

Rat, female

(Chronic test)

 

474 (decreased survival)

Mouse, female

(Chronic test)

 

386 (reduced survival)

Mouse, male

(Chronic test)

 

536 (reduced survival)

Rat

(Chronic test)

941 (systematic effect)

 

Rat, male

(Chronic test)

 

471 (renal nephropathy)

Rat, female

(Chronic test)

 

474 (renal nephropathy)

Mouse

(Chronic test)

1,072 (systematic effect)

 

Mouse, female

(Chronic test)

 

386 (renal nephropathy)

Mouse, male

(Chronic test)

 

536 (renal nephropathy)

Mouse

(Subchronic test)

1.4 (hepatotoxicity)

7 (hepatotoxicity)

ORNL


 

 

NOAEL (mg/kg/d)

LOAEL (mg/kg/d)

Source

Trichloroethylene

 

Mouse

(Subchronic test)

 

100 (minor effect on relative liver weight)

IRIS

 

Rat, male

(Chronic test)

 

1,097 (decreased survival)

ATSDR

 

Rat, female

(Chronic test)

 

549 (decreased survival)

 

Rat, male

(Chronic test)

 

500 (decreased survival)

 

Rat, female

(Chronic test)

 

500 (decreased survival)

 

Mouse, female

(Chronic test)

 

869 (decreased survival)

 

Mouse, male

(Chronic test)

 

1,000 (decreased survival)

 

Rat

(Chronic test)

250 (systematic effect)

 

 

Rat, male

(Chronic test)

50 (renal effect)

250 (renal effect)

 

Rat

(Chronic test)

1,097 (systematic effect)

 

 

Rat

(Chronic test)

 

549 (toxic nephrosis, proximal tubular epithelium alterations)

 

Rat

(Chronic test)

 

549 (alopecia, roughening of hair coat, sores)

 

Rat

(Chronic test)

 

549 (squinting, red discharge)

 

Rat, male

(Chronic test)

549 (body weight decreased)

1,097 (body weight decreased)

 

Rat, female

(Chronic test)

 

549 (body weight decreased)

 

Rat

(Chronic test)

1,000 (systematic effect)

 

 

Rat

(Chronic test)

 

500 (toxic nephrosis, cytomegaly)

 

Rat, male

(Chronic test)

 

500 (body weight decreased)

 

Rat

(Chronic test)

1,000 (systematic effect)

 

 

Rat

(Chronic test)

 

500 (toxic nephrosis, cytomegaly)

 

Rat, male

(Chronic test)

500 (body weight decreased)

1,000 (body weight decreased)

 

Mouse, male

(Chronic test)

2,239 (systematic effect)

1,160 (toxic nephrosis)

 

Mouse, female

(Chronic test)

 

569 (alopecia, skin sores)

 

Mouse

(Chronic test)

1,000 (systematic effect)

1,000 (alight to moderate toxic nephrosis, cytomegaly)

 

Mouse, male

(Chronic test)

 

1,000 (decreased body weight)

 

Mouse

(Subchronic test)

0.7 (hepatotoxicity)

7 (hepatotoxicity)

ORNL

 


 

 

NOAEL (mg/kg/d)

LOAEL (mg/kg/d)

Source

2,4,6-trichlorophenol

Rat

(Chronic test)

4.5

 

NHMRC

Rat

(Chronic effect)

500 (systematic effect)

250 (bone marrow hyperplasia)

ATSDR

Rat, female

(Chronic effect)

 

500 (decreased body weight)

Mouse, male

(Chronic effect)

1,300 (systematic effect)

650 (hepatic hyperplasia)

Mouse

(Chronic effect)

1,356 (systematic effect)

 

Mouse, female

(Chronic effect)

 

658 (reduced body weight)

Rat

(Chronic test)

500 (immuno / lymphor effect)

 

Rat

(Chronic effect)

500 (neurological effect)

 

Mouse, female

(Chronic test)

1,356 (neurological effect)

 

Rat

(Chronic test)

500 (reproductive)

 

Mouse, male

(Chronic test)

1,300 (reproductive)

 

Mouse, female

(Chronic test)

1,356 (reproductive)

 

Hexachlorobenzene

Rat

(Chronic test)

0.08 (liver effect)

 

IRIS

Mouse

(Chronic test)

 

24 (decreased survival)

ATSDR

Dog, female

(Chronic test)

 

11 (decrease survival)

Rat

(Chronic test)

0.05 (hepatic effect)

0.25 (mitochondrial swelling and elongation)

Rat, female

(Chronic test)

 

7 (systematic effect)

Rat

(Chronic test)

 

10 (systematic effect)

Rat, female

(Chronic effect)

 

10 (hepatic effect)

Rat, female

(Chronic effect)

10 (decreased body weight)

 

Mouse, male

(Chronic test)

 

13 (hepatic effect)

Hamster, male

(Chronic test)

 

16 (decreased in weight gain)

Dog

(Chronic test)

11 (Cardiovascular system)

110 (arteriopathy)

Dog

(Chronic test)

1 (Gastro effect)

11 (diarrhea, necrotic and inflammatory lesions of the omentum and abdominal serosa)

Dog

(Chronic test)

1 (hemato effect)

110 (anemia)

 

NOAEL (mg/kg/d)

LOAEL (mg/kg/d)

Source

Hexachlorobenzene (Con’t)

Dog

(Chronic test)

1 (hepatic effect)

 

11 (hepatomegaly, bile duct hyperplasia, pericholangitis, perioportal fibrosis)

 

Dog

(Chronic test)

1 (decreased body weight)

11 (decreased body weight)

Dog

(Chronic test)

 

0.1 (immuno / lymphoret effect)

Mouse

(Chronic test)

 

24 (tremors, convulsions)

b-BHC

Rat, female

(Chronic test)

5 (hemato effect)

 

ATSDR

Rat, male

(Chronic test)

 

22.5 (decreased red blood cells, leukocyte and hemoglobin concentrations)

Rat, male

(Chronic test)

 

4.5 (hyalinization of centrilobular cells)

Rat, male

(Chronic test)

4.5 (renal effect)

22.5 (calcinosis)

Rat, female

(Chronic test)

5 (decreased in body weight)

 

Mouse, female

(Chronic test)

20 (hepatic effect)

 

Mouse, male

(Chronic test)

 

54 (nuclear irregularities in foci of enlarged hepatocytes)

Mouse, male

(Chronic test)

 

45 (centrilobular hypertrophy)

Rat, female

(Chronic test)

5 (immuno / lymphoret effect)

 

Rat, male

(Chronic test)

 

22.5 (cortical atrophy in thymus)

Rat, female

(Chronic test)

5 (neurological effect)

 

Rat, male

(Chronic test)

 

22.5 (ataxia, coma)

Rat, male

(Chronic test)

0.9 (reproductive)

22.5 (atrophy of testes)

Rat, female

(Chronic test)

0.2 (reproductive)

25 (atrophy of ovary)


 

 

NOAEL (mg/kg/d)

LOAEL (mg/kg/d)

Source

g-BHC

Rat, female

(Chronic test)

 

32 (increased mortality rate)

ATSDR

Rat, male

(Chronic test)

 

 

7 (hepatic effect)

Rat, female

(Chronic test)

32 (renal effect)

 

Rat, female

(Chronic test)

4 (systematic effect)

 

Rat, male

(Chronic test)

 

112 (moderate microscopic damage of hepactic cell)

Rat, female

(Chronic test)

64 (decreased body weight gain)

 

Rat, male

(Chronic test)

 

112 (decreased body weight gain)

Rat

(Chronic test)

9 (hepatic effect)

 

Rat

(Chronic test)

8 (reproductive effect)

 

ORNL

Antimony

Rat

(Chronic test)

 

0.35 (longevity, blood glucose, and cholesterol)

IRIS

Rat

(Chronic test)

6 (decreased body weight gain and reduced food and water intake)

 

WHO (2004)

Rat

(Chronic test)

 

0.262 (decreased lifespan)

ATSDR

Mouse, female

(Chronic test)

 

0.35 (decreased lifespan)

Rat

(Chronic test)

0.262 (cardio effect)

0.262 (decreased nonfasting serum glucose, increased serum cholesterol)

Mouse

(Chronic test)

0.35 (hepatic effect)

 

Mouse

(Chronic test)

 

1.25 (longevity)

ORNL


 

 

NOAEL (mg/kg/d)

LOAEL (mg/kg/d)

Source

Barium

Mouse, male

(Chronic test)

 

160 (increased mortality)

ATSDR

Rat, male

(Chronic test)

15 (systematic effect)

 

Rat

(Chronic test)

60 (systematic effect)

 

Rat, female

(Chronic test)

0.17 (cardio effect)

7.2 (depressed rates of cardiac contraction and electrical conductivity)

Rat, female

(Chronic test)

 

0.8 (increased blood pressure)

Mouse, male

(Chronic test)

160 (systematic effect)

 

Mouse, male

(Chronic test)

75 (renal effect)

160 (marked nephropathy)

Mouse, male

(Chronic test)

75 (body weight)

160 (weight loss)

Rat, male

(Chronic test)

15 (immuno/lymphoret effect)

 

Rat, male

(Chronic test)

60 (immuno/lymphoret effect)

 

Mouse, male

(Chronic test)

75 (immuno/lymphoret effect)

160 (lymphoid depletion in the spleen and decreased relative and absolute spleen weight)

Rat, male

(Chronic test)

15 (immuno/lymphoret effect)

 

Rat, male

(Chronic test)

60 (immuno/lymphoret effect)

 

Mouse, male

(Chronic test

160 (immuno/lymphoret effect)

 

Rat, male

(Chronic test)

15 (reproductive effect)

 

Rat, male

(Chronic test)

60 (reproductive effect)

 

Rat, female

(Chronic test)

75 (reproductive effect)

 

Mouse, male

(Chronic test)

160 (reproductive effect)

 

Mouse, female

(Chronic test)

200 (reproductive effect)

 

Rat

(Chronic test)

5.1 (growth)

 

ORNL

Rat

(Chronic test)

 

19.8 (mortality)


 

 

NOAEL (mg/kg/d)

LOAEL (mg/kg/d)

Source

Chromium

Rat

(Chronic test)

1,468

 

IRIS

Rat

(Chronic test)

2,040 (systematic effect)

 

ATSDR

Rat

(Chronic test)

3.6 (systematic effect)

 

Rat

(Chronic test)

0.46 (systematic effect)

 

Rat

(Chronic test)

2,737 (longevity)

 

ORNL

Copper

Mouse, male

(Chronic test)

42 (decrease in body weight)

 

ATSDR

Rat, male

(Subchronic test)

66 (reproductive effect)

 

Rat, female

(Subchronic test)

68 (reproductive effect)

 

Mink

(Subchronic test)

12 (reproductive effect)

 

Mink

(Chronic test)

11.7 (reproductive effect)

15.14 (reproductive effect)

ORNL

Lead

Rat

(Chronic test)

8 (reproductive effect)

80 (reproductive effect)

ORNL

Nickel

Rat

(Chronic test)

5 (decreased body and organ weights)

 

IRIS, WHO (2004)

Rat

(Chronic test)

187.5 (systematic effect)

 

ATSDR

Rat

(Chronic test)

7.5 (decrease in body weight)

187.5 (decreased body weight gain)

Dog

(Chronic test)

25 (respiratory effect)

62.5 (cholesterol granulomas, emphysema, bronchiolectasis)

Dog

(Chronic test)

62.5 (systematic effect)

 

Dog

(Chronic test)

25 (hemato effect)

62.5 (decreased hemaocrit and hemoglobin levels)

Dog

(Chronic test)

25 (renal effect)

62.5 (increased kidney weight)

Dog

(Chronic test)

25 (decreased in body weight gain)

62.5 (decreased in body weight gain)

Rat

(Chronic test)

187.5 (immuno/lymphoret effect)

 

Dog

(Chronic test)

62.5 (immuno/lymphoret effect)

 

Rat

(Chronic test)

187.5 (neurological effect)

 

Dog

(Chronic test)

62.5 (neurological effect)

 

Rat

(Chronic test)

40 (reproductive effect)

80 (reproductive effect)

ORNL


 

 

NOAEL (mg/kg/d)

LOAEL (mg/kg/d)

Source

Selenium

Rat

(Chronic test)

 

0.5 (reduced longevity)

ATSDR

Rat

(Chronic test)

0.1 (muscular/skeletal effect)

0.2 (soft bones)

Rat

(Chronic test)

0.025 (hepatic effect)

0.1 (hyperplastic lesions)

Rat

(Chronic test)

0.025 (renal effect)

0.1 (nephritis)

Rat, female

(Chronic test)

0.5 (systematic effect)

 

Rat, female

(Chronic test)

 

0.25 (slight to moderate cirrhosis)

Mouse

(Chronic test)

 

0.57 (amyloidosis)

Mouse

(Chronic test)

0.57 (decrease in body weight)

 

Rat

(Chronic test)

0.21 (reproductive effect)

1.05 (decreased fertility, maternal toxicity)

Rat

(Chronic test)

0.20 (reproductive effect)

0.33 (reproductive effect)

ORNL

Silver

Rat

(Subhronic test)

 

222.2 (decreased weight gain)

ATSDR

Mouse

(Subhronic test)

 

18.1 (hypoactivity)

Tin

Rat

(Chronic test)

63 (systematic effect)

 

ATSDR

Rat

(Chronic test)

 

0.7 (systematic effect)

Mouse

(Chronic test)

164 (systematic effect)

 

Mouse

(Chronic test)

0.7 (decrease in body weight)

 

Mouse

(Chronic test)

23.4 (reproductive effect)

35 (reproductive effect)

ORNL

Vanadium

Rat

(Chronic test)

0.89 (decreased hair cystine)

 

IRIS

Rat

(Chronic test)

0.7 (systematic effect)

 

ATSDR

Mouse

(Chronic test)

4.1 (systematic effect)

 

Mouse

(Chronic test)

0.54 (other effect)

 

Rat

(Chronic test)

 

2.1 (reproductive effect)

ORNL

Zinc

Rat

(Chronic test)

160 (reproductive effect)

320 (reproductive effect)

ORNL


 

 

NOAEL (mg/kg/d)

LOAEL (mg/kg/d)

Source

Ammonia

Rat, female

(Subchronic test)

22 (decrease body weight)

3,150 (reduction in body weight)

ATSDR

Rat

(Subchronic test)

22 (decrease body weight)

3,102.2 (reduced body weight gain)

Rat

(Subchronic test)

412 (renal effect)

 

Rat, female

(Subchronic test)

79 (systematic effect)

 

Dog

(Subchronic test)

 

337 (bone deformity and softening)

Rat

(Subchronic test)

22 (neurological effect)

3,102.2 (decreased binding of somatostatin to receptors in frontoparietal cortex and hippocampus)

Rat

(Subchronic test)

 

4,293 (decreased body weight)

 

NOAEL (mg/kg/d)

LOAEL (mg/kg/d)

Source

Dioxins and Furans

Rat

(Chronic test)

 

0.1 (increased mortality)

ATSDR

Mouse

(Chronic test)

 

0.36 (increased mortality)

Mouse, male

(Chronic test)

 

1 (decreased survival)

Rat

(Chronic test)

0.01 (respiratory effect)

0.1 (local alveolar hyperplasia)

Rat

(Chronic test)

0.01 (cardio effect)

0.1 (myocardial degeneration, periateritis)

Rat

(Chronic test)

0.1 (gastro effect)

 

Rat

(Chronic test)

0.01 (hemato effect)

0.1 (decreased erythocytes)

Rat

(Chronic test)

0.1 (muscular/skeletal effect)

 

Rat

(Chronic test)

 

0.01 (severe and extensive hepatic nacrosis)

Rat

(Chronic test)

0.1 (renal effect)

 

Rat

(Chronic test)

 

0.1 (decreased in body weight gain)

Rat

(Chronic test)

0.071 (systematic effect)

 

Rat

(Chronic test)

0.0071 (hepatic effect)

0.071 (toxic hepatitis)

Rat

(Chronic test)

 

0.0014 (decrease in body weight gain)


 

 

NOAEL (mg/kg/d)

LOAEL (mg/kg/d)

Source

Dioxins and Furans (Con’t)

Rat

(Chronic test)

0.286 (systematic effect)

 

ATSDR

Rat

(Chronic test)

0.057 (decrease in weight gain)

 

Rat, male

(Chronic test)

 

0.0286 (decreased weight gain)

Mouse

(Chronic test)

 

0.36 (dermatitis)

Mouse

(Chronic test)

 

0.36 (decreased weight gain)

Mouse

(Chronic test)

0.3 (systematic effect)

 

Mouse

(Chronic test)

0.0071 (renal effect)

0.071 (lymphocytic inflammatory infiltration in kidney)

Monkey

(Chronic test)

0.001 (immuno/lymphoret effect)

 

Rat

(Chronic test)

0.01 (immuno/lymphoret effect)

0.1 (thymic atrophy)

Rat

(Chronic test)

0.071 (immuno/lymphoret effect)

 

ATSDR

Rat, male

(Chronic test)

0.286 (immuno/lymphoret effect)

 

Mouse

(Chronic test)

0.3 (immuno/lymphoret effect)

 

Mouse, female

(Chronic test)

 

0.03 (decrease in the effector and memory T cell phenotypes)

Rat

(Chronic test)

0.01 (neurological effect)

0.1 (hemorrhage in brain)

Rat

(Chronic test)

0.071 (neurological effect)

 

Mouse

(Chronic test)

0.3 (neurological effect)

 

Rat

(Chronic test)

0.1 (reproductive effect)

 

Rat

(Chronic test)

0.071 (reproductive effect)

 

Mouse

(Chronic test)

0.3 (reproductive effect)

 


 

 

NOAEL (mg/kg/d)

LOAEL (mg/kg/d)

Source

Toluene

Mouse

(Chronic test)

 

260 (reproductive effect)

ORNL

Diazinon

Rat, male
(Chronic test)

10 (systematic effect)

 

ATSDR

Rat, female
(Chronic test)

12 (systematic effect)

 

Rat, male
(Chronic test)

10 (immuno/lymphoret  effect)

 

Rat, female
(Chronic test)

12 (immuno/lymphoret  effect)

 

Rat, male
(Chronic test)

0.06 (neurological effect)

5 (decrease in brain AChE)

Rat, female
(Chronic test)

0.07 (neurological effect)

6 (decrease in brain AChE)

Rat, male
(Chronic test)

10 (reproductive effect)

 

Rat, female
(Chronic test)

12 (reproductive effect)

 


 

 

NOAEL (mg/kg/d)

LOAEL (mg/kg/d)

Source

Malathion

Rat, male

(Chronic test)

 

359 (significant increase in deaths)

ATSDR

Rat, male

(Chronic test)

 

166 (increased mortality)

Rat, female

(Chronic test)

35 (systematic effect)

415 (increased absolute and relative thyroid and parathyroid weight)

Rat, male

(Chronic test)

 

359 (systematic effect)

Rat

(Chronic test)

332 (systematic effect)

 

Rat, male

(Chronic test)

 

166 (chronic inflammation of the stomach and stomach ulcers)

Rat, female

(Chronic test)

 

166 (fatty metamorphosis of the liver)

Mouse

(Chronic test)

2,980 (systematic effect)

 

Mouse, male

(Chronic test)

17.4 (respiratory effect)

1,476 (systematic effect)

Mouse, female

(Chronic test)

167 (systematic effect)

 

Rat, male

(Chronic test)

2 (neurological effect)

359 (inhibition of plasma cholinesterase)

Mouse, female

(Chronic test)

20.8 (neurological effect)

 

Mouse, male

(Chronic test)

 

1,476 (inhibition of plasma and RBC cholinesterase activity)

Mouse

(Chronic test)

 

1,490 (cystic endometrial hyperplasia)

Note: Bolded value was used to derive toxicological reference dose