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GHS Classification Guidance for the Japanese Government

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Relation between concentration(ppm)in diet and dosage per body weight(mg/kg weight /day)<br />

animal<br />

body<br />

weight<br />

(kg)<br />

Food<br />

consumption<br />

per day (g)<br />

(except <strong>for</strong><br />

liquids)<br />

Mouse 0.02 3<br />

Rat(Young) 0.1 10<br />

Rat(Matured) 0.4 20<br />

Guinea pig 0.75 30<br />

Rabbit 2 60<br />

Dog 10 250<br />

Cat 2 100<br />

Ape 5 250<br />

Dog 10 750<br />

102<br />

Type of diet<br />

Dry laboratory<br />

chow diet<br />

Moist, semi-solid<br />

diet<br />

Dosage (mg/kg body<br />

weight /day)per<br />

concentration in diet of<br />

1ppm<br />

0.15<br />

0.1<br />

0.05<br />

0.04<br />

0.03<br />

0.025<br />

0.05<br />

0.05<br />

0.075<br />

Lehman, A.J.(1954) Association of Food and Drug Officials Quarterly Bulletin, 18: 66, partially<br />

revised. Values in this table are <strong>the</strong> average of values obtained from many literatures.<br />

(Example)In cases of rats, what are <strong>the</strong> values in ppm and mg/kg body weight /day of a<br />

substrate which is contained in diet by 0.5%?<br />

(Solution) 0.5% is equal to 5000 ppm. From <strong>the</strong> table, in cases of matured rat, 1 ppm in <strong>the</strong> diet<br />

is equivalent to 0.050 mg/kg body weight /day. Consequently, 5000 ppm is equivalent to<br />

250 mg/kg body weight /day (5000×0.050).

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