If you're using the material in a fume hood, then the risk of inhalation exposure is significantly minimized. And if the material is aqueous, then the risks of vaporization and exposure by inhalation are also minimized.There. That's a pretty brief risk assessment that would support you not using respirators.The use of respiratory protection is not without risks of its own. Regulatory requirements are complex and while students wouldn't necessarily be subject to the occupational safety regulations for respirators, the prudent safety person would apply those requirements anyway - if the risk assessment showed respiratory protection was indicated.HTHDebbiePS - SDS' are often subject to review by legal. It would seem this guidance had been included as fanny cover.--- 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**acsdchasOn Fri, Sep 3, 2021, 1:02 PM Murphy, Dr. Ruth Ann <rmurphy**At_Symbol_Here**umhb.edu> wrote:--- 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
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
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).
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.
Impervious clothing, The type of protective equipment must be selected according
to the concentration and amount of the dangerous substance at the specific
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.
Professor of Chemistry
Chairperson, Department of Chemistry, Environmental Science and Geology
Co-Chairperson, Health Professions Advisory Committee
Amy LeVesconte Professorship of Chemistry
JAMP Faculty Director
University of Mary Hardin-Baylor
900 College Street
Belton, TX 76513-2599
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