From: Jim Kaufman <jim**At_Symbol_Here**labsafetyinstitute.org>
Subject: Re: [DCHAS-L] 20% Ethanol
Date: Wed, 28 Jan 2015 12:18:27 -0500
Message-ID: !&!AAAAAAAAAAAYAAAAAAAAAF5z3Xg0GChGvIQHFvPKss/CgAAAEAAAANPyKWIFgqlHslpm0f+MwUsBAAAAAA==**At_Symbol_Here**labsafetyinstitute.org

### Flammability[]

An ethanol-water solution that contains 40% ABV (alcohol by volume) will catch fire if heated to about 26 =B0C (79 =B0F) and if an ignition source is applied to it. This is called its flash point.[80] The flash point of pure ethanol is 16.60 =B0C (61.88 =B0F), less than average room temperature.

The flash points of ethanol concentrations from 10% ABV to 96% ABV are shown below:[81]

=B7        10% — 49 =B0C (120 =B0F)

=B7        20% — 36 =B0C (97 =B0F)

=B7        30% — 29 =B0C (84 =B0F)

=B7        40% — 26 =B0C (79 =B0F)

=B7        50% — 24 =B0C (75 =B0F)

=B7        60% — 22 =B0C (72 =B0F)

=B7        70% — 21 =B0C (70 =B0F)

=B7        80% — 20 =B0C (68 =B0F)

=B7        90% — 17 =B0C (63 =B0F)

=B7        96% — 17 =B0C (63 =B0F)

James A. Kaufman, Ph.D.

President/CEO
The Laboratory Safety Institute (LSI)

A Nonprofit Educational Organization for

Safety in Science, Industry, and Education

192 Worcester Street, Natick, MA 01760-2252
508-647-1900  Fax: 508-647-0062
Cell: 508-574-6264  Res: 781-237-1335
Skype: labsafe; 508-319-1225

Chair, ICASE Committee on Safety in Science Education

International Council for Associations of Science Education

P We thank you for printing this e-mail only if it is necessary

From: DCHAS-L Discussion List [mailto:dchas-l**At_Symbol_Here**MED.CORNELL.EDU] On Behalf Of NEAL LANGERMAN
Sent: Tuesday, January 27, 2015 8:30 PM
To: DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU
Subject: [DCHAS-L] 20% Ethanol

Does anyone have flashpoint data on 20% ethanol in water they can share?

Thanks

Neal

------------------------------------------------------------------------------------

The information contained in this message is privileged and confidential and protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by replying to the message and deleting it from your computer.

NEAL LANGERMAN, Ph.D.

PO Box 152329

SAN DIEGO CA 92195

We no longer support FAX.