Monday, January 19, 2009

Do not turn ON A/C Immediately as soon as you Enter the Car

Please open the windows after you enter your car and do not turn ON your air-conditioning immediately.

In brief, the above article says: According to research done by a U.C., the car dashboard, sofa, air freshener will emit Benzene, a cancer causing toxin (carcinogen- take note of the heated plastic smell in your car).

In addition to causing cancer, it poisons your bones, causes anemia, and reduces white blood cells. Prolonged exposure will cause Leukaemia, increasing the risk of cancer. May also cause miscarriage.

Acceptable Benzene level indoors is 50 mg per sq. ft. A car parked indoors with the windows closed will contain 400-800 mg of Benzene.. If parked outdoors under the sun at a temperature above 60 degrees F, the Benzene level goes up to 2000-4000 mg, 40 times the acceptable level.. The people inside the car will inevitably inhale an excess amount of the toxin.
It is recommended that you open the windows and door to give time for the interior to air out before you enter. Benzene is a toxin that affects your kidney and liver, and is very difficult for your body to expel this toxic stuff.

Source: Forwarded Email
Courtesy: Photo -

1 comment:

Cynical Synapse said...

There is no basis in fact for this. It also misinforms on what is an "acceptable" level of benzene exposure.

I checked it on As the Mythbusters would say, "busted". Although benzene is a carcinogen and a constituent in both plastics and fuel, auto components don't off-gas to that extreme. In fact, a Korean study found exposures higher during winter months.

OSHA's permissable exposure limit (PEL) for benzene is 1 part per million (PPM) over an 8-hour time-weighted average (TWA) or 5 PPM in 15 minutes. There is no authoritive basis for the claim 50 mg per sq ft is acceptable. In fact, OSHA's TWA converts to 16 mg/cubic meter which equals 4.8 mg/sq ft. Thus 50 mg/sq ft is excessive and is even double OSHA's short term exposure limit of 24.38 mg/sq ft.

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