Fluorine suppliers
Fluorine
- CAS:
- 7782-41-4
- MF:
- F2
- MW:
- 38
Properties
- Melting point:
- -220°C
- Boiling point:
- -188°C
- Density
- 1.695（15℃）
- vapor pressure
- >760 mmHg at 20 °C
- refractive index
- 1.000195
- storage temp.
- -20°C
- solubility
- reacts with H2O
- form
- pale yellow gas
- color
- pale
- Odor
- Strong ozone-like odor detectable at 0.1 to 0.2 ppm
- Water Solubility
- reacts
- Dielectric constant
- 1.5（-201℃）
- Exposure limits
- TLV-TWA 1 ppm (～2 mg/m3) (ACGIH and MSHA), 0.1 ppm (OSHA); IDLH 25 ppm (NIOSH).
- Stability:
- Stable. Extremely strong oxidant which may react violently with combustible materials, including plastics, reducing agents and organic material. Reacts with water to form corrosive acids.
Safety Information
- Symbol(GHS)
GHS04,GHS03,GHS06,GHS05
- Signal word
- Danger
- Hazard statements
- H270-H314-H330
- Precautionary statements
- P220-P244-P370+P376-P403-P260-P264-P280-P301+P330+P331-P303+P361+P353-P363-P304+P340-P310-P321-P305+P351+P338-P405-P501-P260-P271-P284-P304+P340-P310-P320-P403+P233-P405-P501
- Hazard Codes
- T+,C
- Risk Statements
- 7-26-35
- Safety Statements
- 9-26-36/37/39-45
- RIDADR
- UN 1045/9192
- OEB
- C
- OEL
- TWA: 0.1 ppm (0.2 mg/m3)
- DOT Classification
- 2.3, Hazard Zone A (Gas poisonous by inhalation)
- HazardClass
- 2.3
- Toxicity
- LC50 (1 hr) inhalation by rats, mice, guinea pigs: 185, 150, 170 ppm (by vol) (Keplinger, Suissa)
- IDLA
- 25 ppm
Use
Probably the most common use of fluorine is its addition to municipal water supplies tohelp prevent tooth decay. Stannous (II) fluoride (SnF2) is added to the water in proportionsof about one part per million (1 ppm). In addition, many brands of toothpaste add stannousfluoride or other fluoride compounds to their product to help prevent tooth decay. Toothenamel degenerates overtime. Fluorine promotes remineralization, essentially making a formof new enamel called “fluorapatite,” which is resistant to decay. Another popular use for the element fluorine is the plastic called Teflon. This is a fluoropolymerconsisting of long chainlike inert molecules of carbon linked chemically to fluorine.Teflon is useful as a coating for nonstick surfaces in cookware, ironing board covers, razorblades, and so forth.
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