Chapter 3 Hazardous materials
School Science Laboratory Safety Regulations
Polvacrylamide/acrylamide >R.
Students Students are not allowed to handle polyacrylamide.
i.
Schools should use the suggested checklist in Annex F to ensure that teachers and laboratory technicians meet the necessary criteria before they are allowed to work with polyacrylamide in laboratories.
j.
Acrylamide and bisacrylamide are neurotoxins. The and use of acrylamide and bisacrylamide in purchase powder form to prepare polyacrylamide are strictly prohibited. Schools are permitted to handle and use only precast polyacrylamide (gel) from a reliable supplier.
k.
Appropriate impermeable gloves should protect the skin when handling polyacrylamide.
always
be
worn
to
Ethanol I.
Ethanol is a flammable liquid and its vapour can travel a considerable distance to an ignition source and cause a "flash back". Ethanol vapour also forms explosive mixtures with air at concentrations of 4 to 19% (by volume).
m. Quantities greater than 1 litre should be stored in tightly sealed metal containers in areas separate from oxidisers. Ethanol should not come into contact with strong oxidisers and peroxides as this may result in fires and explosions. Tris powder ?.
A
mask must always be avoid inhaling Tris powder.
worn
over
the
nose
and
mouth
to
3.3.6. Disposal of chemicals a.
The Environmental Public Health (Toxic Industrial strial Waste) Indu 6 to be collected Regulations require certain chemical waste for disposal by licensed toxic chemical waste collectors approved by the National Environment Agency (NEA). A list of licensed toxic chemical waste collectors can be found at the Internet site maintained by NEA. The site can be accessed via the hyperlink at: http://intranet.moe.gov.sg/science/labsafety/labsafety.htm
6
The list of Toxic Industrial/Chemical Waste (under Schedule 1) is stated in Appendix 6 of the National
Environment Agency's
Code of Practice on Pollution Control (amended in 2004). ~250~