Is there some REASON why this unknown chemical must be analytically identif ied (such as regulatory issues or disposal issues, or because a worker or workers have been exposed, or because there have been some contamination or decontamination issues)? If not, why not simply incinerate it at a proper hazardous waste facility and remove the problem?
Just a thought.
Alan H. Hall, M.D.
Toxicology Consulting and Medical Translating Services, Inc. (TCMT S, Inc.)
Colorado School of Public Health
First off I would like to thank everyone for their time and thoughtsto our mystery, which as of now remains a mysery.
We ran GC and it is not in our library. I'm hoping someone might be
able to he lp with some new information.
ion 91 is the strongest peak
ion 61 is apx 75% of ion 91
ion 45 is apx 50% of ion 61.
the peaks were very light so we are extending run time to see if we
can generate more peaks.
we ran ph on all samples. 5 of the 7 are ph 12, 2 o f the samples are
ph 7. The two that are ph 7 are obviously the most concentrated based
on the odor that rushes at you when you open the jar.
Thanks for your continued help,
O n Mon, Jan 4, 2010 at 11:41 AM, Clark, Richard C <rcclark**At_Symbol_Here**bemis.com> wrote:
Just got back to work this morning after a week's vacation and read thepostings related to this problem.The chlordane speculation merits comment. I was the wor ks chemist forVelsicol at Marshall, IL just before the plant closed in the late 70's.That was the only site in the world that manufactured chlordane ; Velsicolalso manufactured hexachlor at another site (Tennessee, I thi nk). Chlordaneis a polychlorinated dicyclopentadiene and had lots of by-produ cts;hexachlor was hexachlorocyclopentadiene made by a different pro cess and wasmuch purer. Chlordane was so heavy that it could only be shipped in 30-gal.drums. It was diluted by reformulators with kerosene (5 -10% chlordane, Ithink). The kerosene-chlordane mixture could be dispers ed in water with theaid of detergent to make an emulsion for field spraying and ter mitetreatment. With the closure of the Marshall, IL plant , acquisition ofVelsicol by Great Lakes Chemical (now part of Chemtura), and& nbsp;environmentalissues, chlordane manufacture was never re-started. T his might explain theage of the drums.Chlordane is an impure mixture containing numerous chlor ination byproductsof cyclopentadiene and dicyclopentadiene. The EPA publi shed a GC-MS studyof it ca. 1976 in Analytical Chemistry which revealed dozens of compounds..Velsicol had no idea of that complexity; we were using packed column GCtechnology for process control. I'm not sure that  ;GC-MS will be useful foridentification given the mixture of kerosene and chlordane. Tha t would be anidentification nightmare.Chlordane yellows with age. The green flame is from the Bielstein test forchlorine. The emulsion of the kerosene mixture is cloud y-white. While theinitial boiling point may be 27=B0C, the boiling point may ri se quickly above100=B0C. An ASTM distillation will give some idea of th at. Infraredspectroscopy of the distillation fractions (10% volume cuts)&nb sp;should show amixture of saturated hydrocarbons and chlorination of saturated andunsaturated hydrocarbons. I'll be surprised if you can take thedistillation to a dry point before the flask contents start to smoke;chlordane will likely break down before it distills. If the low boilingcomponents are chlorinated by-products, they won't flash.
Hope this helps (and my memory isn't too inaccurate).
Rick ClarkSr. Research ChemistCurwood, Inc.________________________________From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**list.uvm.edu] On Behalf OfList ModeratorSent: Monday, December 28, 2009 11:38 AMSubject: Re: [DCHAS-L] Unknown Hazardous Chemical
From: Andrew Gross <gross.drew**At_Symbol_Here**gmail.com>Date: December 28, 2009 12:02:48 PM ESTSubject: Re: [DCHAS-L] Unknown Hazardous Chemical
Hi Everyone,My lab recieved a sample from a power plant that they do not kn ow whatit is and wish to have it identified. I am trying to ID it becauseuntil I have a better idea it is on hold for all testing (read on tofind out why). I'm hoping for some thoughts.
Sample is liquid in appearance, but lighter then di-chloromet hane. Ithink it is actually an oil of some kind. It is transpa rant yellowand some say it smells like kerosene.It forms a white emulsion when mixed with water.
There is no flash point. On closed cup method it flames out below25C. It does not ignite when exposed to direct flame.&n bsp; However itboils around 27C.Exposed flame turns green (like copper flame), vapors also tu rn flame green.When dried, it turns to a waxy white translucent crystal.&nbs p; My closedcup flame is still green meaning it is contaminated by the vapo rs.Vapors in small quanteties (under hood) cause nausea, light h eadednessand confusion.pH is 6ish (litmus paper) although client claims it to be caust ic.All PCB analysis came up negative.The exposure effects are why all tests are on hold till we have abetter idea as to what were dealing with as well as the remaini ngtests for my department involve reacting with acid and pumping< BR>nitrogen through it.Thoughts, ideas, experiences? Client has 5 unidenti fied drums of thisstuff and has no idea what it is. We need to identify b ut I am notgoing to put anyone in danger until I know more about it.
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