Ruth Ann,
It would be helpful to know which compound we are talking about. However, let's look at the basic information you gave us from a Chemistry perspective. You said it was an ionic liquid. Hence it is a liquid salt! So it will not be volatile. Thus, unless it is sprayed around there should be no exposure, i.e. very low risk. Therefore, use in a chemical fume hood with controlled transfers is appropriate.
Seems like the respirator information in Section 8 of the SDS was boilerplate for industrial scale and legal protection.
Best,
Craig
Craig A. Merlic
Professor of Chemistry, UCLA Department of Chemistry and Biochemistry
Executive Director, UC Center for Laboratory Safety
Los Angeles, CA 90095-1569
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> on behalf of John Callen <jbcallen**At_Symbol_Here**GMAIL.COM>
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Date: Friday, September 3, 2021 at 1:47 PM
To: <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Subject: Re: [DCHAS-L] Quick Question
Ruth Ann,
It would be helpful to know what the "ionic liquid" or the exact chemical is to make an assessment. Also, it would be even better if you could provide us with the CAS Number and SDS. Thanks!
The information in the SDS regarding "respiratory protection" as highlighted below is not cryptic and I believe is very straight forward, based of course, upon the required monitoring the air quality respect to the contaminant(s) in question.
Be Safe and Stay Healthy!
3M Personal Safety Division - Retired
ACS/DCHAS Founding Member
(312) 632-0195
Greetings and Happy Labor Day Weekend,
Should a compound (ionic liquid) with the following SDS statement be safe to use in small amounts, e.g., 5 g, in a fume hood, without a respirator? We would just be making solutions and running them through a viscometer. Students are enthusiastic about this project, but I am cautious. The highlighted info in the SDS statement below about a risk assessment seems a bit cryptic.
SECTION 8: Exposure controls/personal protection
8.1 Control parameters
Components with workplace control parameters
Contains no substances with occupational exposure limit values.
8.2 Exposure controls
Appropriate engineering controls
Handle in accordance with good industrial hygiene and safety practice. Wash hands
before breaks and at the end of workday.
Personal protective equipment
Eye/face protection
Safety glasses with side-shields conforming to EN166 Use equipment for eye
protection tested and approved under appropriate government standards such as
NIOSH (US) or EN 166(EU).
Skin protection
Handle with gloves. Gloves must be inspected prior to use. Use proper glove
removal technique (without touching glove's outer surface) to avoid skin contact
with this product. Dispose of contaminated gloves after use in accordance with
applicable laws and good laboratory practices. Wash and dry hands.
Body Protection
Impervious clothing, The type of protective equipment must be selected according
to the concentration and amount of the dangerous substance at the specific
workplace.
Respiratory protection
Where risk assessment shows air-purifying respirators are appropriate use a full-
face respirator with multi-purpose combination (US) or type ABEK (EN 14387)
respirator cartridges as a backup to engineering controls. If the respirator is the sole
means of protection, use a full-face supplied air respirator. Use respirators and
components tested and approved under appropriate government standards such as
NIOSH (US) or CEN (EU).
Ruth Ann Cook Murphy, Ph.D.
Chairperson, Department of Chemistry, Environmental Science and Geology
Co-Chairperson, Health Professions Advisory Committee
Amy LeVesconte Professorship of Chemistry
University of Mary Hardin-Baylor
Accepting Christ is life's greatest decision; following Christ is life's greatest adventure.
--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas
--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas
