<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
font-size:11.0pt;
font-family:"Calibri",sans-serif;
mso-fareast-language:EN-US;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-AU" link="#0563C1" vlink="#954F72" style="word-wrap:break-word">
<div class="WordSection1">
<p class="MsoNormal">Hello all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We typically use a fish bubbler to mix ETOH and water together when we mix up 70% ETOH. We are in the stages of planning a new building, and I recently got the below feedback about doing this – the dangerous goods consultant says that this
has the risk of acidifying the solution, and that using N2 to mix the solution might be a better idea. Do any of you have thoughts on this? If so, I would really appreciate hearing them!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Cheers,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Tonya<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span lang="EN-US" style="mso-fareast-language:EN-AU">Email:<o:p></o:p></span></b></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">As per our conversation last week, you mentioned that CSIRO plan on using air to bubble through their ethanol solutions to help mix the solution. Can you please confirm if this is correct with CSIRO?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Normally when you mix/bubble air through ethanol solutions, you may run the risk of oxidation of the ethanol, although this reaction is very slow, you may generate some acetylaldehyde and eventually ethanoic acid.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Can you confirm with CSIRO if using nitrogen is better? This would still help mix the solutions and would have the added benefit of degassing the ethanol by removing dissolved oxygen from the solution. This long term, would help minimise
the risk of oxidation of the ethanol and generation of acetylaldehyde and eventually ethanoic acid.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-AU">Regards<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-AU">Paulo Da Silva<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="545" style="width:408.75pt;border-collapse:collapse;MIN-WIDTH: 0px !important">
<tbody>
<tr style="height:112.5pt">
<td width="221" valign="top" style="width:165.75pt;padding:0cm 0cm 0cm 0cm;height:112.5pt">
<p class="MsoNormal"><a href="https://www.cetec.com.au/" title="https://www.cetec.com.au/"><span style="mso-fareast-language:EN-AU;text-decoration:none"><img border="0" width="130" height="92" style="width:1.35in;height:.9583in" id="Picture_x0020_2" src="cid:image001.png@01D76768.4FF70F10"></span></a><span style="mso-fareast-language:EN-AU"><o:p></o:p></span></p>
</td>
<td width="320" valign="top" style="width:240.0pt;padding:13.5pt 0cm 0cm 0cm;height:112.5pt">
<p>Dr Paulo Da Silva<br>
<span style="color:#7D7D7D">PhD, BSc(Hons), M.RACI, M.AIDGC,<br>
</span><span style="color:#828282">NABERS Accredited Assessor</span><span style="color:#727272"><br>
</span>Principal Consultant - Dangerous Goods<br>
<br>
+61 458 639 888 | +61 2 9966 9211<span style="font-size:10.0pt"><br>
</span><a href="https://twitter.com/CETEC_Group"><span style="font-size:10.0pt;text-decoration:none"><img border="0" width="19" height="22" style="width:.2in;height:.225in" id="Picture_x0020_3" src="cid:image009.png@01D76768.4FF70F10"></span></a><span style="font-size:10.0pt"> </span><span style="font-size:12.0pt">
</span><a href="http://www.linkedin.com/company/1101170"><span style="font-size:12.0pt;text-decoration:none"><img border="0" width="19" height="22" style="width:.2in;height:.225in" id="Picture_x0020_4" src="cid:image010.png@01D76768.4FF70F10"></span></a><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p></o:p></span></p>
</td>
</tr>
<tr style="height:38.25pt">
<td nowrap="" colspan="2" style="padding:3.75pt 0cm 0cm 0cm;height:38.25pt">
<p class="MsoNormal"><span style="mso-fareast-language:EN-AU"><img border="0" width="127" height="40" style="width:1.325in;height:.4166in" id="Picture_x0020_5" src="cid:image011.png@01D76768.4FF70F10"></span><span style="mso-fareast-language:EN-AU"> <img border="0" width="41" height="40" style="width:.425in;height:.4166in" id="Picture_x0020_6" src="cid:image012.jpg@01D76768.4FF70F10">
<img border="0" width="40" height="40" style="width:.4166in;height:.4166in" id="Picture_x0020_7" src="cid:image013.png@01D76768.4FF70F10">
<img border="0" width="175" height="40" style="width:1.825in;height:.4166in" id="Picture_x0020_8" src="cid:image014.png@01D76768.4FF70F10"><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td colspan="2" style="padding:0cm 0cm 0cm 0cm">
<p class="MsoNormal"><span style="color:#7D7D7D;mso-fareast-language:EN-AU"><br>
</span><span style="font-size:7.5pt;color:#7D7D7D;mso-fareast-language:EN-AU">CETEC Pty Ltd (Aus) | CETEC Foray Ltd (UK) | CETEC Foray LLC (USA) | Foray Laboratories Pty Ltd - ISO 17025 Accredited<br>
This email and any attachments are confidential and may be privileged. If you are not the intended recipient, please delete and do not copy nor disseminate this email.
<a href="http://www.cetec.com.au/about/websiteinfo/emaildisclaimer.html">Full Disclaimer</a></span><span style="mso-fareast-language:EN-AU"><o:p></o:p></span></p>
</td>
</tr>
</tbody>
</table>
<p><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-AU"><o:p> </o:p></span></p>
<p>Message protected by MailGuard: e-mail anti-virus, anti-spam and content filtering.<br>
<a href="http://www.mailguard.com.au/mg">http://www.mailguard.com.au/mg</a><o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-AU"><br>
<a href="https://console.mailguard.com.au/ras/20O2ospFSF/6eUwQMk21thGXrSVBuh8xy/0.8">Report this message as spam</a> <br>
<o:p></o:p></span></p>
</div>
</body>
</html>