1. Concern: Supplementary dyeing agents like thiox, soda ash, citric acid, urea, sodium alginate, ammonium sulfate, synthrapol, vinegar, monogum, bleach, baking soda, salt, and ludigol must be stored in airtight container in a cool, dry, well-ventilated area. Rating: C
Suggested Improvement: We suggest having the supplementary agents’ containers be moved from the metal table into a storage cabinet, where they would be organized into each type. Each container should have a largely visible label indicating what it is, rather than it written in sharpie marker. The marker fades over time, making it harder to identify the substance in the container. Without proper organization or clear labels for the supplementary agents, students are more prone to spill or use the wrong agent leading to unnecessary material waste and mess.
- Concern: Washfast Acid Dyes and Mx Fiber Reactive Dyes need to be stored in an airtight container in a cool, dry, well-ventilated space locked up, away from oxidizing and reducing agents.
Rating: C
Suggested improvement: To avoid a mix up of powdered dye, the Washfast Acid Dyes and Mx Fiber Reactive Dyes should be placed on different shelves and further organized in a lock-up cabinet. To assist students with putting back the dye powders back on the designated shelves, a color sticker indicating which type of dye it is could be placed on the top of the cap. A blue sticker would be put on every Washfast Acid Dye container lid and a red sticker on the Mx Fiber Reactive Dyes container lid. The shelf where the dyes would be stored would also have a red or blue label to assist further and indicate to the student were each dye belongs. On the door of the cabinet, there would be a helpful poster explaining the sticker color system.
- Concern: Signs informing students of proper disposal and spill protocol.
Rating: B
Suggested improvements: There are signs informing students of how to safely dispose and clean a spill of Mx Fiber Reactive Dyes and Wash fast Acid Dyes, but they could be made more visible to students. We suggest printing the signs larger and laminating them so they are easier to read and will last longer. The signs should be placed in 2-3 different areas, near the supplementary agents, the lockup dye cabinet, and another highly visible spot in the lab, like the doors. Large, colorful and laminated signs should be posted inside and outside the dye lab. Possible places to put signs are on the doors and cabinet containing the dyes. Closed toed shoes should also be enforced with a sign on the entrances to the dye lab saying closed toed shoes are required. If possible extra gloves, goggles, respirators, and aprons should be provided
- Concern: Measuring cups, spoons, other dye accessory storage.
Rating: B+
Suggested improvement: here are enough measuring tools in the dye lab but, further organization and relabeling are required. A lot of the measuring spoon’s and cup’s labels have worn off, making it hard to tell what measurement it is. We suggest going through them and relabel them or get rid of the bad ones and replacing them with newer ones.
- Concern: Personal Protective Equipment
Currently, the dye lab relies on people remembering to bring their own gloves, apron, respiratory mask, and protective eyewear and does not carry any extra equipment in the event of something breaking or someone forgetting something. The lab also does not have enough reminders about requiring the use of personal protective equipment when dyeing.
Rating: C
Suggested improvements: Large, colorful and laminated signs should be posted inside and outside the dye lab. Possible places to put signs are on the doors and cabinet containing the dyes. Closed toed shoes should also be enforced with a sign on the entrances to the dye lab saying closed toed shoes are required. If possible extra gloves, goggles, respirators, and aprons should be provided
Sources: https://www.dharmatrading.com/info/fiber-reactive-dye-general-information.html
Prochemicalanddye.com MSDS
http://www.wildcolours.co.uk/html/indigo.html#indigo-natural-synthetic
https://www.pure-chemical.com/msds/Soda_ash.pdf
https://labricoleuse.livejournal.com/10331.html
https://sunproductsmsdsbrand.thewercs.com
http://dept.harpercollege.edu/chemistry/msds/Vinegar%20ScholAR.pdf