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Dipropylene glycol (SIDS)

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OECD <strong>SIDS</strong> PROPYLENE GLYCOL<br />

5. Toxicity<br />

Id 25265-71-8<br />

Date 30.05.2001<br />

GLP : yes<br />

Test substance : as prescribed by 1.1 - 1.4<br />

Method : Animals and treatments<br />

Six mice per group were treated by gavage on two consecutive days with<br />

0, 500, 1000, or 2000 mg/kg dipropylene <strong>glycol</strong> in water at a volume of 10<br />

ml/kg. Survivors were killed by carbon dioxide inhalation 24 hours after the<br />

second<br />

dose. Bone marrow was collected for assessment of micronuclei.<br />

Postmortem examination<br />

None.<br />

Result : No mice died. General signs of toxicity or necropsy observations were not<br />

reported.<br />

Source : Lyondell Chemical Co. Houston, Texas<br />

Conclusion : Based on the results of this study, an LD50 of >2000 mg/kg<br />

was determined for dipropylene <strong>glycol</strong> in the mouse.<br />

Reliability : (2) valid with restrictions<br />

limited necropsy performed; animals not observed full 14 days after dosing.<br />

Flag : Critical study for <strong>SIDS</strong> endpoint<br />

22.05.2001 (17)<br />

5.1.2 ACUTE INHALATION TOXICITY<br />

Type : LC50<br />

Species : other: Rat & Guinea Pig<br />

Strain : other: not specified<br />

Sex : no data<br />

Number of animals :<br />

Vehicle :<br />

Exposure time :<br />

Method :<br />

Year : 1961<br />

GLP : no<br />

Test substance :<br />

Method : Dose Level-Vapor concentrations not reported, aerosol nominal<br />

concentrations were 6000-8000 mg/m3.<br />

<strong>Dipropylene</strong> <strong>glycol</strong> was heated to 170°C for 8 hours, 6 rats individually<br />

exposed to vapors in small chambers.<br />

<strong>Dipropylene</strong> <strong>glycol</strong> was heated to 120°C for 4 hours, 6 rats individually<br />

exposed to vapors in small chambers.<br />

<strong>Dipropylene</strong> <strong>glycol</strong> was heated to 170°C for 5 hours with the vapors being<br />

drawn off, allowed to cool; then reheated to 120°C for 5 hours, 6 rats<br />

individually exposed to vapors in small chambers.<br />

<strong>Dipropylene</strong> <strong>glycol</strong> was heated to 170°C for 5 hours with the vapors being<br />

drawn off, allowed to cool; 6 rats were individually exposed in small<br />

chambers to an aerosol generated at room temperature.<br />

An aerosol of dipropylene <strong>glycol</strong> was generated at room temperature, 6<br />

rats and 6 guinea pigs were individually exposed in small chambers.<br />

(duration not reported)<br />

Remarks: Because this study was conducted before any standardized<br />

guidelines were established, the question of guideline methodology and<br />

GLP conduct is not applicable.<br />

UNEP PUBLICATIONS 65

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