A good resource with full documentation is the ACGIH Documentation of the Threshold Limit Values published by the ACGIH. Some libraries carry the documentation as a reference. Includes exposure values and full documentation of how that value was derived.
Lawrence M. Gibbs, CIH, FAIHA
Associate Vice Provost
480 Oak Road
Stanford, CA 95305
From: ACS Division of Chemical Health and Safety [mailto:DCHAS-L**At_Symbol_Here**PRINCETON.EDU]
On Behalf Of Dan Nowlan
Sent: Monday, January 22, 2018 8:33 AM
Subject: [DCHAS-L] acute toxicity estimates (ATEs) for methanol
I am in need of human acute toxicity estimates (ATEs) for neat methanol in order to calculate/derive the "numerical measures of toxicity" for several of our SDSs. Irrelevant rodent LD50/LC50 abound, but I cannot find a consensus for human ATEs. Can someone kindly point me in the direction of an authoritative source for this information (preferably with a concise synopsis so I don't have to sift through a dissertation-length publication)? Among other regulatory bodies, the source(s) will need to please OSHA and DOT. Thanks in advance.
Berryman Products, Inc.
(817) 640-2376, ext. 147
Just some quick thoughts you should consider:
Are they storing in fixed tanks, portable liquid cylinders, or dewars?
How big are they?
How big is the room?
Are they dispensing or using for cold storage?
Have you done back of the envelope calculations to determine the concentration during a catastrophic release? For a small spill?
I've been working with one lab being fed with a 1500 gallon tank (tank is outside) for cooling then vented back outside and the vendor recommended that we install an O2 sensor.
I'm also aware of a smallish electron microscope lab that uses 100-gallon cylinders that, after doing spill calculations, also had a sensor installed.
We did spec sensors into our new Chemistry Stores addition in the LN dispensing room.
The biology labs with 20L dewars being used for cold storage typically don't.
On Fri, Jan 19, 2018 at 3:48 PM Battles, Paul <pmb024**At_Symbol_Here**shsu.edu> wrote:
We are in the process of building a new biology building and one of the labs will regularly contain a liquid nitrogen tank. Are oxygen depletion sensors required? The only thing I have come across said "recommended if room doesn't have adequate ventilation."
Chemical Safety Officer
Compliance, Integrity, and Safety
Environmental Health and Safety
Michigan Technological University
Houghton, MI 49931
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