From: Lawrence M Gibbs <lgibbs**At_Symbol_Here**STANFORD.EDU>
Subject: Re: Fwd: [DCHAS-L] Formic acid
Date: Thu, 6 Apr 2017 20:15:36 +0000
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: 1573C3AD-1D7C-4C5C-924A-C7F7861A0736**At_Symbol_Here**

These are relative statements made based on standardized toxicity testing. A reasonable reference for for if acid would be the National Toxicological Program report on Formic acid evaluation.

Need to recall that all thing are toxic depending on the dose. 


On Apr 6, 2017, at 12:40 PM, Ferm, Barret <000003e16e810599-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU> wrote:

Is it just me, or is the following entry in the Wikipedia entry on formic acid misleading, or even deceptive?


Formic acid has low toxicity [emphsis added] (hence its use as a food additive), with an LD50 of 1.8 g/kg (oral, mice). The concentrated acid is corrosive to the skin.[6]"

Farther below in the same section, however, it says the OSHA PEL is 30 ppm. Elsewhere it gives the NFPA hazard codes: H=3, F=2, R=1. 

How can they say it is "low toxicity"?

~Barry Ferm 

Chemical Hygiene Officer
Chemistry Laboratory Coordinator

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