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Tetrafluoroethylene

Product Name
Tetrafluoroethylene
CAS No.
116-14-3
Chemical Name
Tetrafluoroethylene
Synonyms
C2F4;R1114;MS-122;PFC-1114;fluoroplast4;Fluoroplast 4;Perfluoroethene;Tetrafluorethen;Tetrafluorethene;Perfluoroethylene
CBNumber
CB6225793
Molecular Formula
C2F4
Formula Weight
100.01
MOL File
116-14-3.mol
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Tetrafluoroethylene Property

Melting point:
-142°C
Boiling point:
-76.3°C
Density 
1.1507
refractive index 
1.2420 (estimate)
Stability:
Stable. Reactive when heated.
CAS DataBase Reference
116-14-3(CAS DataBase Reference)
NIST Chemistry Reference
Ethene, tetrafluoro-(116-14-3)
IARC
2A (Vol. 19, Sup 7, 71, 110) 2017
EPA Substance Registry System
Tetrafluoroethene (116-14-3)
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Safety

Hazard Codes 
C,F
Risk Statements 
11
Safety Statements 
16-36/37/39-45
RIDADR 
1081
Hazard Note 
Corrosive/Flammable
HazardClass 
2.1
Hazardous Substances Data
116-14-3(Hazardous Substances Data)
Toxicity
LC50 (4 hr) in rats, mice, hamsters, guinea pigs (ppm): 37500-45000, 35000, 28500, 28000 (Kennedy)
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Hazard and Precautionary Statements (GHS)

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Tetrafluoroethylene Chemical Properties,Usage,Production

Description

Tetrafluoroethylene is a synthetic, colorless, flammable gas that is insoluble in water. Tetrafluoroethylene is used primarily in the synthesis of polytetrafluoroethylene resins. It is also used as a monomer in the synthesis of copolymers and as a propellant for food product aerosols. When heated to decomposition, tetrafluoroethylene emits highly toxic fluorocarbon fumes. The primary route of human exposure to this compound is inhalation. Acute inhalation exposure to tetrafluoroethylene may result in irritation of the respiratory tract and buildup of fluid in the lungs (pulmonary edema). Contact with this gas can cause eye irritation. This chemical is reasonably anticipated to be a human carcinogen. (NCI05)

Chemical Properties

TFE is a colorless, flammable gas.

Uses

In manufacture of polymers and synthesis of fluorinated refrigerants, dielectric media and solvents. In vinyl polymerization, cycloalkylation and addition reactions.

Preparation

TFE is manufactured from chloroform. Chloroform is fluorinated by reaction with hydrogen fluoride to produce chlorodifluoromethane (R-22). Pyrolysis of chlorodifluoromethane then yields TFE.
CHCl3 + 2 HF → CHClF2 + 2 HCl
2CHClF2 → C2F4 + 2 HCl
A laboratory synthesis entails pyrolysis of a PTFE under a vacuum. The PTFE polymer "cracks" and depending on the pressure, produces mainly C2F4.

Definition

A gaseous organic compound (a fluorocarbon and a haloalkene) used to make the plastic polytetrafluoroethene (PTFE).

General Description

A colorless odorless gas. Easily ignited. Vapors are heavier than air. May asphyxiate by the displacement of air. May violently polymerize under prolonged exposure to fire or heat, violently rupturing the container. Under prolonged exposure to fire or heat the containers may rupture violently and rocket. Water insoluble.

Air & Water Reactions

Flammable. Forms polymeric peroxides that are explosive [Bretherick 1979 p. 164].

Reactivity Profile

TETRAFLUOROETHYLENE reacts with air (oxygen) to form polymeric peroxides that are explosive [Bretherick 1979 p. 164]. Probably susceptible to similar reactions with a number of oxidizing agents.May polymerize violently (inhibitor tends to prevent this reaction). May react violently with aluminum. Contamination of a tetrafluoroethylene gas supply system led to a reaction between the inhibitor, limonene, and the contaminant, iodine pentafluoride. This initiated an explosive polymerization event [MCA Case History No. 1520].

Hazard

Flammable, dangerous fire risk. Kidney and liver damage; kidney and liver cancer. Possible carcinogen.

Health Hazard

Inhalation causes irritation of respiratory system. Contact with eyes causes slight irritation.

Safety Profile

Confirmed carcinogen. Mildly toxic by inhalation. Can act as an asphyxiant and may have other toxic properties. The gas is flammable when exposed to heat or flame. The inhibited monomer will explode if igntted. Explosive in the form of vapor when exposed to heat or flame. Will explode at pressures above 2.7 bar if limonene inhbitor is not added. Iodine pentafluoride depletes the limonene inhbitor and then causes explosive polymerization of the monomer. Mixtures with hexafluoropropene and air form an explosive peroxide. Reacts violently with SO3; air; dfluoromethylene dihypofluorite; loxygen difluoride; iodine pentafluoride; oxygen. When heated to decomposition it emits highly toxic fumes of F-. See also FLUORIDES.

Potential Exposure

A potential danger to those involved in the production of TFE and the manufacture of fluorocarbon polymers.

Carcinogenicity

Tetrafluoroethylene is reasonably anticipated to be a human carcinogen based on sufficient evidence of carcinogenicity from studies in experimental animals (NTP 1997).

Shipping

UN1081 Tetrafluoroethylene, stabilized, Hazard Class: 2.1; Labels: 2.1-Flammable gas. Cylinders must be transported in a secure upright position, in a well-ventilated truck. Protect cylinder and labels from physical damage. The owner of the compressed gas cylinder is the only entity allowed by federal law (49CFR) to transport and refill them. It is a violation of transportation regulations to refill compressed gas cylinders without the express written permission of the owner.

Incompatibilities

Reacts with air. Hazardous polymerization may occur unless inhibited. Will explode at pressures above 2.7 bar if terpene inhibitor is not added. Inhibited monomer can decompose explosively in fire, under pressure, or upon contact with materials with which it can react exothermically. Violent reaction with oxygen, oxidizers, sulfur trioxide; halogen compounds.

Waste Disposal

Return refillable compressed gas cylinders to supplier. Nonrefillable cylinders should be disposed of in accordance with local, state and federal regulations. Allow remaining gas to vent slowly into atmosphere in an unconfined area or exhaust hood. Refillable-type cylinders should be returned to original supplier with any valve caps and outlet plugs secured and valve protection caps in place.

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Tetrafluoroethylene Suppliers

Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
21-61259100-
Fax
86-21-61259102
Email
sh@meryer.com
Country
China
ProdList
40264
Advantage
62
Shanghai Hanhong Scientific Co.,Ltd.
Tel
021-54306202- ; ;
Email
jerry.ma@hanhonggroup.com;jerry.ma@hanhonggroup.com;jerry.ma@hanhonggroup.com
Country
China
ProdList
43255
Advantage
64
Hangzhou J&H Chemical Co., Ltd.
Tel
0571-87396432-
Fax
0571-87396431
Email
sales@jhechem.com
Country
China
ProdList
13967
Advantage
53
Chizhou Kailong Import and Export Trade Co., Ltd.
Tel
Please Email
Fax
-
Email
xg01_gj@163.com
Country
China
ProdList
9550
Advantage
50
Shenzhen SUNGENING Bio-Medical Co., Ltd.
Tel
0755-28967200-8056;0755-28967200-8062
Fax
0755-28967200
Email
hnsale203@sungening.com;wxf@sungening.com
Country
China
ProdList
9606
Advantage
60
Shanghai Orgchem Co.,Ltd.
Tel
+86-21-5877 1921
Fax
+86-21-5877 1925
Email
info@chemofchina.com
Country
China
ProdList
9687
Advantage
55
Chemwill Asia Co.,Ltd.
Tel
86-21-51086038
Fax
86-21-51861608
Email
chemwill_asia@126.com;sales@chemwill.com;chemwill@hotmail.com;chemwill@gmail.com
Country
CHINA
ProdList
23975
Advantage
58
Hubei Jusheng Technology Co.,Ltd.
Tel
86-18871470254
Fax
027-59599243
Email
linda@hubeijusheng.com
Country
CHINA
ProdList
28229
Advantage
58
Hubei xin bonus chemical co. LTD
Tel
86-13657291602
Fax
027-59338440
Email
linda@hubeijusheng.com
Country
CHINA
ProdList
23035
Advantage
58
Henan Huawen Chemical Co., Ltd
Tel
0370-2070108-
Fax
QQ:2712427897
Email
2712427897@qq.com
Country
China
ProdList
8898
Advantage
58
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View Lastest Price from Tetrafluoroethylene manufacturers

Career Henan Chemical Co
Product
Tetrafluoroethylene 116-14-3
Price
US $1.00/KG
Min. Order
1KG
Purity
97%-99.9%
Supply Ability
100kg
Release date
2020-03-05

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