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Previous by Date: Subject: Re: [DCHAS-L] LETTER: Beware of flammable chemical in wood stain, shed caught fire Date: Wednesday, July 12, 2017 at 6:56:25 AM Author: NEAL LANGERMAN <neal**At_Symbol_Here**CHEMICAL-SAFETY.COM> |
Next by Date: Subject: Re: [DCHAS-L] Flammables Date: Wed, 12 Jul 2017 08:52:25 -0400 Author: ILPI Support |
Well, that explanation doesn't make a lot of damn sense. There is no proprietary chemical that caused this. And it has nothing to do with the resin being an epoxy. Shame on that fire inspector.
I pulled up the 2017 SDS -- one of the most informative and complete SDSs I've ever seen. Just about everything is there and the percentages are out to the hundredth's position (but be sure to get the 2017 version, earlier ones don't include the "non-hazardous ingredients" which in this case, are the most hazardous).
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The problem is the word "natural" in the advertising. Look at the "non-hazardous components" on the 2017 SDS:
68333-62-0 fatty acids, tall-oil, polymers with ethylene glycol 11.3%
8001-20-5 Tung Oil 3.27%
There's your fuel and the fire-starter, PLAIN OLD TUNG OIL. All these "natural" plant-derived setting oils will do this.
The warning on the can about putting the rags in water is the one NFPA debated over for so long for all of these spontaneous-combusting natural oils triggered by the fire that put Watco into bankruptcy (a lawyer and his two daughters were killed). Watco is now owned by Flecto.
The minute you see the word "natural" on any paint or varnish, assume you have the kiss of fire in a can.
Monona Rossol, M.S., M.F.A., Industrial Hygienist
President: Arts, Crafts & Theater Safety, Inc.
Safety Officer: Local USA829, IATSE
181 Thompson St., #23
New York, NY 10012 212-777-0062
-----Original Message-----
From: Secretary, ACS Division of Chemical Health and Safety <secretary**At_Symbol_Here**DCHAS.ORG>
To: DCHAS-L <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Sent: Wed, Jul 12, 2017 4:14 am
Subject: [DCHAS-L] LETTER: Beware of flammable chemical in wood stain, shed caught fire
I think that this is a nice example of a Lessons Learned story related to chemical safety...
- Ralph
http://www.vashonbeachcomber.com/opinion/letter-beware-of-flammable-chemical-in-wood-stain-shed-caught-fire/
LETTER: Beware of flammable chemical in wood stain, shed caught fire
Tue Jul 11th, 2017 11:22am
OPINION
Last month, our shed burned down, taking with it at least one of our large stately cedar trees. The cause? A chemical ingredient (penofin) in the stain being used on our house.
It turns out that penofin self-combusts in the presence of air, so when our contractor placed one small brush, one empty can and a small rag just outside the shed, eight hours later the fire began. If one reads the very small print about this ingredient (found in several wood stains), the manufacturer details that all tools and containers used to apply the stain are to be placed in a tub of water for a week to avoid combustion.
When I talked with the fire inspector, he informed me that four recent fires he had written investigation reports on had penofin as the cause. When I asked why on earth would such a product be available, he replied that because it is an epoxy (rather than a resin), it does a better job of protecting structures from the elements. Once the product is applied and dry, self-combustion will not happen. We were evidently about 20 minutes away from losing our house and starting a major forest fire on the north end.
The purpose of this communication is to warn residents about the perils of using products with this ingredient and to urge users to follow the instructions carefully. The other fact I have discovered is that not all manufacturers state that penofin is an ingredient in their product, rather placing it under the category "proprietary ingredients."
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