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Post Info TOPIC: For Immediate Release - Do Roof Cleaning Chemicals Cause Cancer?


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For Immediate Release - Do Roof Cleaning Chemicals Cause Cancer?
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This is something we should look at. My chemist specifically blended our Green Wash so that it wont release harmful chloramines that have been proven to cause cancer. 

What kind of exposure are we exposing ourselves to when mixing other soaps, borax, alcholhol, scents and other chemicals in our mix?

Lets open up a discussion on this.

AC



-- Edited by AC Lockyer on Saturday 14th of May 2011 01:44:09 PM



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RE: Do Roof Cleaning Chemicals Cause Cancer?
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One major concern arising from sodium hypochlorite use is that it tends to form chlorinated organic compounds; this can occur during household storage and use as well during industrial use.[3] For example, when household bleach and wastewater were mixed, 1-2% of the available chlorine was observed to form organic compounds.[3] As of 1994, not all the byproducts had been identified, but identified compounds include chloroform and carbon tetrachloride.[3] The estimated exposure to these chemicals from use is estimated to be within occupational exposure limits.[3]
A recent European study indicated that sodium hypochlorite and organic chemicals (e.g., surfactants, fragrances) contained in several household cleaning products can react to generate chlorinated volatile organic compounds (VOCs).[8] These chlorinated compounds are emitted during cleaning applications, some of which are toxic and probable human carcinogens. The study showed that indoor air concentrations significantly increase (8-52 times for chloroform and 1-1170 times for carbon tetrachloride, respectively, above baseline quantities in the household) during the use of bleach containing products. The increase in chlorinated volatile organic compound concentrations was the lowest for plain bleach and the highest for the products in the form of “thick liquid and gel”. The significant increases observed in indoor air concentrations of several chlorinated VOCs (especially carbon tetrachloride and chloroform) indicate that the bleach use may be a source that could be important in terms of inhalation exposure to these compounds. While the authors suggested that using these cleaning products may significantly increase the cancer risk,[9] this conclusion appears to be hypothetical:
The highest level cited for concentration of carbon tetrachloride (seemingly of highest concern) is 459 micrograms per cubic meter, translating to 0.073 ppm (part per million), or 73 ppb (part per billion). The OSHA-allowable time-weighted average concentration over an eight-hour period is 10 ppm,[10] almost 140 times higher;
The OSHA highest allowable peak concentration (5-minute exposure for five minutes in a 4-hour period) is 200 ppm,[10] twice as high as the reported highest peak level (from the headspace of a bottle of a sample of bleach plus detergent).
Further studies of the use of these products and other possible exposure routes (i.e., dermal) may reveal other risks. Though the author further cited ozone depletion greenhouse effects for these gases, the very low amount of such gases, generated as prescribed, should minimize their contribution relative to other sources.

http://en.wikipedia.org/wiki/Sodium_hypochlorite

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http://potency.berkeley.edu/chempages/SODIUM%20HYPOCHLORITE.html

This study shows no proof of cancer for just exposure to Sodium Hypochlorite alone.

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http://www.atsdr.cdc.gov/toxfaqs/tf.asp?id=928&tid=192



How can sodium and calcium hypochlorite affect my health?
The toxic effects of sodium and calcium hypochlorite are due primarily to the corrosive properties of hypochlorite. If you ingest a small amount of household bleaches (3-6% hypochlorite) you may experience gastrointestinal irritation. If you ingest a more concentrated commercial bleach (10% or higher hypochlorite) or hypochlorite powder you may suffer severe corrosive injuries to the mouth, throat, esophagus and stomach with bleeding, perforation, and eventually death. Permanent scars and narrowing of the esophagus may occur in survivors of severe intoxication.

If you inhale chlorine gas released from concentrated hypochlorite solutions you may experience nasal irritation, sore throat, and coughing. Contact of strong hypochlorite solutions with your skin may cause burning pain, inflammation, and blisters. Contact of the eye with mild bleach solutions may cause mild and transitory irritation. More concentrated solutions may cause severe eye injuries. Long-term exposure to low levels of hypochlorite can cause dermal irritation.

We do not know if exposure to chlorine can result in reproductive effects.

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Trihalomethanes cause cancer?


http://en.wikipedia.org/wiki/Trihalomethane

Trihalomethanes (THMs) are chemical compounds in which three of the four hydrogen atoms of methane (CH4) are replaced by halogen atoms. Many trihalomethanes find uses in industry as solvents or refrigerants. THMs are also environmental pollutants, and many are considered carcinogenic. Trihalomethanes with all the same halogen atoms are called haloforms.



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RE: For Immediate Release - Do Roof Cleaning Chemicals Cause Cancer?
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Hopefully by now we're all wearing respirators of some sort and don't have to worry!!

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Scott,

Post that respirator 3M number we use please.

AC

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