What chemicals is polypropylene resistant to?
Description: Polypropylene resins, like most polyolefin resins, are highly resistant to solvents and chemicals. They are appreciably affected by strong inorganic acids such as fuming nitric acid at room temperature and 98% sulfuric acid at 600C.
What chemicals react with HDPE?
| LDPE & HDPE resistance listed by chemical | |
|---|---|
| 1.4-dioxane | LDPE / HDPE at 20°C: little or no damage after 30 days. LDPE at 50°C: shows some effect after 7 days. |
| Hydrofluoric acid 4% | LDPE / HDPE at 20°C-50°C: little or no damage after 30 days. |
| Hydrofluoric acid 48% | LDPE / HDPE at 20°C-50°C: little or no damage after 30 days. |
What is the difference between polypropylene and polyethylene?
Polyethylene has a lower melting point compared to the higher melting point of polypropylene. Polypropylene is stiffer and resistant to chemicals and organic solvents compared to polyethylene. Polypropylene is pure, non-stretching and generally more rigid than polyethylene.
What plastic is resistant to sulfuric acid?
1. PTFE (or Teflon™) – PTFE, also commonly known as Teflon™, is one of the most acid resistant materials available and is commonly used in chemical and pharmaceutical lab applications.
What is TMAH used for in nanotechnology?
It is widely used in micro- or nanofabrication as an etchant and developer. TMAH is typically one of several ingredients in commercial etching / stripping mixtures, although it may also be used as a pure chemical. It is strongly basic and is known to be highly toxic if ingested or skin contact occurs.
How should I handle tetramethylammonium hydroxide (TMAH)?
Because tetramethylammonium hydroxide (TMAH) can potentially generate toxic and corrosive fumes, it must always be handled under a certified working chemical fume hood. If ventilation is not sufficient, respirator suitable for basic (alkali) vapors should be worn. Always contact EHS for fit-testing before using any kind of respirator.
What are the disadvantages of polyethylene?
Polyethylene is susceptible to attack by some chemicals which may cause stress cracking, swelling, oxidation or may permeate the polyethylene. These reactions may reduce the physical properties of polyethylene.
What are the health effects of TMAH?
Exposure to TMAH will result in acute health effects such as intense burning of the eyes, nose, throat, lungs and skin. Repeated or prolonged exposure may cause skin irritation. Solution, mist and spray are very corrosive to skin, eyes and mucous membranes and may cause dermatitis or permanent eye damage.