Perfiuoroisobutylene
![Perfiuoroisobutylene Structure](CAS/GIF/382-21-8.gif)
- CAS No.
- 382-21-8
- Chemical Name:
- Perfiuoroisobutylene
- Synonyms
- PFIB;Perfluoroisobutylene;PERFLUOROISOBUTENE;1,1,3,3,3-PENTAFLUORO-2-TRIFLUOROMETHYL-1-PROPENE;PERFLUORISOBUTYLENE;Perfiuoroisobutylene;Octafluoroisobutylene;Octafiuoroisobutylene;Perfluor-2-methylprop-1-ene;DAFIBNSJXIGBQB-UHFFFAOYSA-N
- CBNumber:
- CB5851872
- Molecular Formula:
- C4F8
- Molecular Weight:
- 200.03
- MOL File:
- 382-21-8.mol
- Modify Date:
- 2023/5/4 15:15:09
Melting point | -130°C |
---|---|
Boiling point | -3°C (estimate) |
Density | 1.5231 (rough estimate) |
refractive index | 1.2600 (estimate) |
form | A gas at room temp |
EPA Substance Registry System | 1-Propene, 1,1,3,3,3-pentafluoro-2-(trifluoromethyl)- (382-21-8) |
SAFETY
Risk and Safety Statements
Symbol(GHS) | ![]() ![]() GHS08,GHS06 |
---|---|
Signal word | Danger |
Hazard statements | H330 |
Precautionary statements | P260-P271-P284-P304+P340-P310-P320-P403+P233-P405-P501 |
RIDADR | 3162 |
HazardClass | 2.3 |
Toxicity | LC50 ihl-rat: 500 ppb/6H 34ZIAG -,310,69 |
Perfiuoroisobutylene Chemical Properties,Uses,Production
Description
Perfluoroisobutylene (PFIB) is a schedule 2A substance under the Chemical Weapons Convention, which means that while it has significant ability to be used as a chemical weapon, it also serves various other industrial uses.
Uses
Perfluoroisobutylene or perfluoroisobutene is a monomer used in synthesis of Teflon and other polymeric materials. It is also used in etching for semiconductor fabrication, and is potentially used as a chemical warfare agent. The US Food and Drug Administration’s CFR 21 Section 173.360 allows for use of octafluorocyclobutane as a propellant and also allows for PFIB at a level of <.01% as an impurity in formulation.
Safety Profile
A deadly poison by inhalation. Askin, eye, and mucous membrane irritant. Human acuteexposure causes marked irritation of conjunctivae, throat,and lungs. When heated to decompos
Environmental Fate
PFIB exists as a gas in the atmosphere, and is degraded by reaction with hydroxyl radicals, with a reaction half-life of ~5.7 days. PFIB is not susceptible to significant photolysis. The Henry’s law constant of PFIB suggests volatization as an important fate process. The half lives for volatization calculated from a model lake and river were 5.6 days and 4.1 h, respectively, though a small portion will adsorb to suspended solids and sediment. PFIB can also volatize substantially from moist soils, and to a small degree from dry soils.
Perfiuoroisobutylene Preparation Products And Raw materials
Raw materials
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