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Subject: Re: [DCHAS-L] chemical receiving
Date: June 29, 2012 8:31:10 AM EDT
Author: "Robert E. Belford" 		Next by Date:
Subject: Re: [DCHAS-L] Lab Safety Discussion List
Date: June 29, 2012 9:19:14 AM EDT
Author: 8524828hau**At_Symbol_Here**COMCAST.NET

From: ACTSNYC**At_Symbol_Here**CS.COM
Subject: Re: [DCHAS-L] silica gel
Date: June 29, 2012 9:16:52 AM EDT
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: <1f1be.78564da9.3d1f04c4**At_Symbol_Here**cs.com>


The forms of amorphous silica for which there are or have been health standards are * ditomaceous earth-calcined,
* diatomaceous earth-uncalcined,
* precipitated and gel,
* fumed, and
* fused. 

fumed is the only one that has no NIOSH, MAK, OSHA, of AIHA standard and the TLV was withdrawn. 

Monona

In a message dated 6/28/2012 8:34:40 PM Eastern Daylight Time, rmainer**At_Symbol_Here**GMAVT.NET writes:


All,

Is silica gel the same thing as fumed silica (e.g. Cabosil, Aerosil)?

Ray

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