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Old 06-14-2012, 09:48 AM
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Default Dawn dish detergent????

I was just reading an article on the Gulf oil spill clean up and noticed something that surprised me. Dawn is a petroleum based detergent. Many of our members have stated that they use Dawn to clean their trailer roofs. (Myself included) All the warnings for RV EPDM roof material say"Avoid the use of petroleum products."
Have we been doing more harm than good????
On commercial EPDM roofs (black) we always used unleaded gasoline to prep the seams for gluing and to clean an area for patching??
Does anyone else have any other info on this subject???? Sometimes I even scare myself when I start thinking, Hank
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Old 06-14-2012, 10:26 AM
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I can't answer the question but I can say the Spic and Span does a great job and, obviously, is not a petroleum product.
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Old 06-14-2012, 02:05 PM
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I think what you want to avoid is the use of anything which includes petroleum distillates... Not just any petroleum based product.
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Old 06-14-2012, 03:51 PM
hankaye hankaye is offline
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Hank, Howdy;

just skimming the surface here ...;

http://www.onegoodthingbyjillee.com/...s-anymore.html

hankaye
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Old 06-14-2012, 04:58 PM
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Quote:
Originally Posted by hankaye View Post
Hank, Howdy;

just skimming the surface here ...;

http://www.onegoodthingbyjillee.com/...s-anymore.html

hankaye
Hank, I have been doing plumbing and maintenance work all my life and I must disagree with one of those suggestions. Never put hot water in a toilet ... it will crack it. (ask me how I know this)

I have also been involved with marine mammal rescue for many years so I don't doubt that Dawn is good stuff. My question was as a petroleum based product how does it effect EPDM rubber??? Your wisdom is always appreciated, The other Hank
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Old 06-14-2012, 05:39 PM
f6bits f6bits is offline
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Google for “dawn petroleum distillate” doesn’t turn anything up except *one* claim that Dawn has it.

My opinion is that Dawn is safe, but a call or email to Dicor should clear things up. This Escapees post says that Dicor routinely recommends Dawn:
http://www.rvnetwork.com/index.php?showtopic=89379
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Old 06-14-2012, 06:24 PM
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Hank -
I've Googled Dawn looking for any sign of the words "petroleum distillates" in the literature as to what Dawn contains. All I've seen in the ingredients/contents are numerous chemicals and other products but no mention of anything to do with petroleum distillates or citrus-based products -- another no-no for EPDM roofs.

Dicor recommends a non-abrasive cleaner such as RC 100TM, Borax, or Dawn TM was another statement coming from the Dicor website.
It seems that petroleum distillates somehow react with the EPDM rubber which may cause it to "lift" and possibly form bubbles since the rubber and the adhesive no longer form a proper bond. I wasn't a chemistry major so I have no idea what really takes place.

Not sure if that sheds any light on your concern .........
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Last edited by Festus2; 06-14-2012 at 06:30 PM.
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Old 06-14-2012, 08:00 PM
hankaye hankaye is offline
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Hank, Howdy;

Here's some good reading;

http://www.ffsinc.com/MSDS/P&Gpdf/Dawn_Detergent.pdf

Section II is probably what was referred to.
Probably a missunderstanding by the person that wrote what you read and caused the ?.
Page 3 Sect. XIV has the transportation requirments. If packaged in bulk (excess of 119 gal.)
then it requires a placard. The Class 3 that would apply is Combustiable.
DOT Reg Part 40 CFR ...

http://environmentalchemistry.com/yo...ds/class3.html

short version from the link ...;

Combustible Liquids
173.120(b)(1)
1.For the purpose of this subchapter, a combustible liquid means any liquid that does not meet the definition of any other hazard class specified in this subchapter and has a flash point above 60.5°C (141°F) and below 93°C (200°F).
2.A flammable liquid with a flash point at or above 38°C (100°F) that does not meet the definition of any other hazard class may be reclassed as a combustible liquid. This provision does not apply to transportation by vessel or aircraft, except where other means of transportation is impracticable. An elevated temperature material that meets the definition of a Class 3 material because it is intentionally heated and offered for transportation or transported at or above its flash point may not be reclassed as a combustible liquid.
3.A combustible liquid which does not sustain combustion is not subject to the requirements of this subchapter as a combustible liquid. Either the test method specified in ASTM 4206 or the procedure in Appendix H of this part may be used to determine if a material sustains combustion when heated under test conditions and exposed to an external source of flame.

This is the kind of 'stuff' I had to deal with when i hauled Hazardous Waste for a living.

Hang the wrong placard or Not hang a placard and it's a huge fine...

hankaye
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Last edited by hankaye; 06-14-2012 at 08:20 PM.
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Old 06-15-2012, 04:41 AM
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According to the MSDS, Dawn has ethanol as an ingredient. Ethanol is combustible so Dawn becomes a flammable cargo when transported in bulk. Has anyone ever tried to ignite Dawn?

From what I can read of the ingredients, the only petroleum based product is a couple of " zene" components. But I'm no chemist, so I may have missed something in my translation of the ingredients.

Hank, like you, I think DOT guidelines for bulk storage and transportation may have confused the issue. In them, from what I can read, no hazard if transported in packaged configuration, but bulk transportation of more than 119 gallons requires placarding as a hazardous cargo.
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Last edited by JRTJH; 06-15-2012 at 04:46 AM.
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Old 06-15-2012, 07:15 AM
Festus2 Festus2 is offline
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The Dawn that is being referred to in hankaye's link seems to be a commercial grade and consequently may only be used or available in large applications and facilities. I am thinking of restaurants or other establishments that go through a lot of dishes.
As I mentioned earlier, Dicor seems to think it is ok for their products. I use Borax myself whenever I do clean the roof and it performs quite well. I must admit though that it isn't my intention to have the roof "sparkling and shiny clean" like dishes. Clean is good.
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