RE: [AV Media Matters] Transcript Discs

[kbradley@nla.gov.au]

Now I thought that cetrimide was n-cetyl pyridinium chloride, which
is often used in medicated throat drops.  I'll stop gargling with it
till I check that out (grin).

Kevin Bradley
a/g Manager: Digital and Audio Preservation Resources
National Library of Australia
Canberra   ACT 2600
AUSTRALIA

Tel:  +61-2 6262-1381
Fax: + 61-2 6262-1653
Email: kbradley@nla.gov.au
NLA home page: http://www.nla.gov.au
Change is inevitable, except from a vending machine

>----------
>From: 	hkaplan@sos.state.ga.us[SMTP:hkaplan@sos.state.ga.us]
>Sent: 	Thursday, 6 April 2000 9:31 AM
>To: 	AV-Media-Matters@topica.com
>Subject: 	RE: [AV Media Matters] Transcript Discs
>
>>Cetrimide is a generic name for n-cetyl ammonium bromide and should be
>>available from chemical supply companies.
>>
>>Eucalyptus oil is a mild solvent which we have observed to
>>work well on all manner of sticky, greasy or oily contamination.
>
>>HFE's (hydro fluoro ethers) are good solvent based cleaners
>>for lacquers, and can be used with care on cracked or flaking lacquer
>>discs.  HFE 7100 is a good replacement for Freon TF.
>>
>>These solvents are safe, but  can be quite expensive.
>
>In that there are individuals on this list with varying degrees of
>expertise, I think it would be of great benefit if contributors could
>be a bit more specific when alluding to the safety of the materials
>they describe.  I have quickly attempted to locate MSDS on all of the
>substances described above, but was unable to find adequate
>information that would lead me to believe these materials can be
>considered "safe" in the way that word would be most widely interpreted.
>Please keep in mind that many of us have learned to understand that
>"use in a well ventilated area" really means in a fume hood and/or
>with a respirator.  "Safe" will depend on the manner of use. Also keep
>in mind that your workspace may be shared by others and that your
>air may be recirculated to other parts of a building in which unsuspecting
>individuals may be susceptible to contamination.
>
>I have been cautioned that no ether (especially a fluorine compound)
>can be very safe for inhalation and that there is probably a dermal
>question as well.  In addition, all refrigerants are considered
>nasty to some degree and are aphyxiants in tight unventilated
>quarters.
>
>Hilary A. Kaplan
>Conservator
>Georgia Department of Archives and History
>330 Capitol Avenue
>Atlanta, GA 30334
>404 656 3554
>FAX 404 651 8471
>hkaplan@sos.state.ga.us