Useless MSDS Abbreviations
Here are some of the more useless abbreviations we've seen on MSDS's. Beware, the folks that use these may have meant something else...
- C - Ceiling Value. For example,
Toluene-2, 4-diisocyanate (TDI) has a PEL of (C)0.02 ppm.
- Code - On some MSDS's that come out of the Department of Defense (DoD) HMIRS database, we have seen codes associated with almost every field that have are typically "M" or "T". These do not appear to be HMIRS Health Characteristic Codes. We hear directly (third-hand) that in this post-9/11 world the DoD does not wish us to know what the codes represent, even though they have released the codes for each entry! If anyone knows more about these, let us know.
- EST -
Eastern Standard Time Estimated (could also be "Established" when written "Not Est").
- MST -
Mountain Standard Time Mist.
- N/A (sometimes "NA") - Not Applicable, Not Available.
- N/Ap (sometimes "NA") - Not Applicable.
- N/Av (sometimes "NA") - Not Available.
- ND -
North Dakota None Determined or Not Determined.
- NE -
Nebraska North-East None Established.
- NEGL -
Negligee Negligent Negligible.
- NF - None Found.
- N/K (sometimes "NK") - Not Known.
- N/P (sometimes "NP") - Not Provided.
- REC - (sometimes "R") Recommended. Do not confuse with RTECS.
- S/A (sometimes "SA") Simple Asphyxiant
- SKN - Skin.
- SUP DAT -
"whaSup (with) 'Dat?" Possibly "Supply Missing Data" or "Supplementary Data". Apparently a database artifact?
- TS - Trade Secret.
- UNK - "Unknown".
- UNR - "Unreported".
- WATER -Z26020 (or other Z-type numbers), found under the solubility description. This is an error on certain outdated Sigma-Aldrich MSDS's; looks like their computer forgot to put in the correct value.
- Wilson RISK Scale - as described in a separate entry, this is a proprietary hazard rating system for which we can find no detailed information. Without such information, this (or any other) rating system is essentially useless. Your opinion may differ, of course.
When you work around chemicals be sure you have a safety station like this one from Safety Emporium.
Ensure that your MSDS collection is "readily accessible" with these handy compliance centers from Safety Emporium.
If you find others, let us know.
See also: The Index Page of this site.
Entry last updated: Wednesday, August 10, 2016. This page is copyright 2000-2017 by ILPI. Unauthorized duplication or posting on other web sites is expressly prohibited. Send suggestions, comments, and new entry desires (include the URL if applicable) to us by email.
Disclaimer: The information contained herein is believed to be true and accurate, however ILPI makes no guarantees concerning the veracity of any statement. Use of any information on this page is at the reader's own risk. ILPI strongly encourages the reader to consult the appropriate local, state and federal agencies concerning the matters discussed herein.