Does methylene chloride have an odour threshold (at what level can I smell it)?
A wide range of values are reported (1.2 to 440 ppm), but detection occurs around 150 ppm and recognition around 230 ppm. Is the odour of methylene chloride reliable as a warning property? Poor/unreliable – odour threshold is above the TLV, olfactory fatigue may occur (smell may not be noticed after short exposures). How can I work with methylene chloride safely? This material is VERY TOXIC (SUSPECTED CANCER HAZARD). Before handling, it is extremely important that engineering controls are operating and that protective equipment requirements and personal hygiene measures are being followed. Only authorized personnel should have access to this material. They should be properly trained regarding its hazards and its safe use. Maintenance and emergency personnel should be advised of potential hazards. If methylene chloride is released, immediately put on a suitable respirator and leave the area until the severity of the release is determined. Attach appropriate warning signs to storage area
