随着天气转冷，许多人选择紧闭门窗以御寒，但对于纺织厂、化工厂和塑料厂等使用危险化学品的工作场所来说，良好的通风却是保护劳动者健康的重中之重。倘若通风不足，室内有毒化学物质可能会积聚，进而威胁到工人的身体健康。

Glycerol has a higher LD50 and is thus less toxic than organic solvents like C6H14. A less toxic chemical is one with a higher LD50 dose. Glycerol is ideal for use in food and drink because it is ...