Perfiuoroisobutylene Property

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

RIDADR 

3162

HazardClass 

2.3

Hazardous Substances Data

382-21-8(Hazardous Substances Data)

Toxicity

LC50 ihl-rat: 500 ppb/6H 34ZIAG -,310,69

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H330Fatal if inhaled

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P271Use only outdoors or in a well-ventilated area.

P284Wear respiratory protection.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P310Immediately call a POISON CENTER or doctor/physician.

P320Specific treatment is urgent (see … on this label).

P403+P233Store in a well-ventilated place. Keep container tightly closed.

P405Store locked up.

P501Dispose of contents/container to..…

Perfiuoroisobutylene Chemical Properties,Usage,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.

Synthesis Reference(s)

Journal of the American Chemical Society, 75, p. 2698, 1953 DOI: 10.1021/ja01107a044

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.

Toxicity evaluation

PFIB is a strong electrophile that reacts with nucleophiles. The toxicity of PFIB may be correlated with its susceptibility to nucleophilic attack and the generation of reactive intermediates.