Fluorane

FH

fluorane

CAS7664-39-3
GHS06 Gefahrensymbol: Giftig – Totenkopf mit Knochen
GHS05 Gefahrensymbol: Ätzend – Ätzwirkung
Danger

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Identification

CAS Number
7664-39-3
EC Number
231-634-8
UN Number
1052
Index Number
009-002-00-6
PubChem CID
14917

Physical-chemical properties

Molecular Formula
FH
Molar Mass
20.01 g/mol
IUPAC Name
fluorane

Chemical Identifiers

InChI
InChI=1S/FH/h1H
InChI Key
KRHYYFGTRYWZRS-UHFFFAOYSA-N

Overview

Fluorane (CAS 7664-39-3) is a highly toxic and corrosive hydrogen halide compound with strong acidic properties and extreme reactivity with water. Fluorane, also known by its IUPAC name fluorane, represents one of the most hazardous hydrogen halides in industrial chemistry. With the molecular formula FH and a molecular mass of 20.0064 g/mol, this compound exhibits exceptional chemical reactivity and poses significant safety challenges in handling and storage. The substance is classified under multiple acute toxicity categories and carries a Skin Corr. 1A classification, indicating severe corrosive effects on skin and mucous membranes. The compound's extreme toxicity is reflected in its GHS06 skull and crossbones pictogram, while its corrosive nature is denoted by the GHS05 corrosion symbol. Transport regulations classify fluorane under ADR Class 8, emphasizing its corrosive properties during shipping and handling. Unlike related halogenated compounds such as pentachloro-lambda5-phosphane or tribromoborane, fluorane's unique hydrogen-fluorine bond creates distinctive chemical behavior patterns. Primary industrial applications include specialized etching processes in semiconductor manufacturing, where its aggressive chemical properties enable precise material removal. The compound also serves as an intermediate in fluorochemical synthesis and finds use in specialized analytical chemistry procedures requiring strong acidic conditions. Safety protocols demand specialized handling equipment, including acid-resistant materials and comprehensive ventilation systems. Personnel must utilize appropriate personal protective equipment due to the compound's severe health hazards. OYSI maintains availability of fluorane for qualified industrial customers, ensuring compliance with all European chemical distribution regulations and safety standards.

Safety & Classification

Danger
Classification:

Acute Tox. 2 *; Acute Tox. 1; Acute Tox. 2 *; Skin Corr. 1A

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H330

Fatal if inhaled.

H310

Fatal in contact with skin.

H300

Fatal if swallowed.

H314

Causes severe skin burns and eye damage.

Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).

First Aid Measures

Inhalation

Fatal

Measures if vapours or dust are inhaled

First Aid Actions

  • +P304IF INHALED:
  • +P340Remove person to fresh air and keep comfortable for breathing.
  • +P311Call a POISON CENTER/doctor.

Related hazard statements:

Skin Contact

Fatal

Measures if substance contacts the skin

First Aid Actions

  • +P302IF ON SKIN:
  • +P352Wash with plenty of water.
  • +P361Take off immediately all contaminated clothing.
  • +P313Get medical advice/attention.

Related hazard statements:

Eye Contact

Harmful

Measures if substance gets into the eyes

First Aid Actions

  • +P305IF IN EYES:
  • +P351Rinse cautiously with water for several minutes.
  • +P338Remove contact lenses, if present and easy to do. Continue rinsing.
  • +P313Get medical advice/attention.

Related hazard statements:

Ingestion

Fatal

Measures if substance is accidentally swallowed

First Aid Actions

  • +P301IF SWALLOWED:
  • +P330Rinse mouth.
  • +P331Do NOT induce vomiting.
  • +P310Immediately call a POISON CENTER/doctor.

Related hazard statements:

General Measures

Emergency 112 | Poison Control: +49 30 19240 (DE), +33 1 45 42 59 59 (FR), +31 30 274 88 88 (NL)

First aid measures are based on CLP classification and associated P-statements. They do not replace the Safety Data Sheet (SDS). In case of emergency, always consult the full SDS and a physician.

Transport (ADR)

UN Number1052
ADR Class8
Packing GroupI
Tunnel CodeC/D
Proper Shipping NameFluorwasserstoff, wasserfrei
Marine PollutantNo

Frequently Asked Questions

What is fluorane?

Fluorane is hydrogen fluoride (HF), a highly corrosive inorganic compound with the molecular formula FH and CAS number 7664-39-3. This chemical substance has a molecular weight of 20.0064 g/mol and is classified as extremely hazardous due to its acute toxicity and severe corrosive properties. Fluorane is widely used in industrial processes but requires extreme caution during handling due to its dangerous nature.

What are the physicochemical properties of fluorane?

Fluorane is a colorless gas or liquid (depending on temperature) with a sharp, penetrating odor. It has exceptional solubility in water, forming hydrofluoric acid solutions. The compound has a low boiling point and high vapor pressure at room temperature. Its highly polar nature and ability to form strong hydrogen bonds make it miscible with polar solvents while exhibiting unique chemical reactivity, particularly with glass and metals.

What is fluorane used for?

Fluorane serves multiple industrial applications including glass etching, metal surface treatment, and as a catalyst in alkylation processes in petroleum refining. It is essential in fluorine chemistry for producing fluorinated compounds, pharmaceuticals, and refrigerants. The semiconductor industry uses fluorane for silicon wafer cleaning and etching processes. Additionally, it plays a role in uranium processing and as a precursor for various fluorine-containing chemicals in specialized manufacturing.

How to handle fluorane safely?

Fluorane requires extreme safety precautions including acid-resistant gloves, full face protection, and chemical-resistant clothing. Work must be conducted in well-ventilated areas or fume hoods with appropriate emergency shower facilities nearby. Personnel should use respiratory protection when vapor exposure is possible. All handling equipment must be HF-compatible materials. Emergency procedures and antidotes should be immediately available, and only trained personnel should handle this substance.

How to store fluorane correctly?

Fluorane must be stored in corrosion-resistant containers made of polyethylene or Teflon, never in glass or ordinary metals. Storage areas should be cool, dry, and well-ventilated with temperature control systems. The substance is incompatible with alkalis, metals, glass, concrete, and most organic materials. Secondary containment is essential, and storage facilities must include emergency response equipment including calcium gluconate gel for potential exposure incidents.

What to do in case of contact with fluorane?

Fluorane contact requires immediate emergency response. For skin contact, flush extensively with water for at least 20 minutes and apply calcium gluconate gel if available, then seek immediate medical attention. Eye contact demands immediate irrigation with water or saline for 15+ minutes followed by urgent medical care. If inhaled, move to fresh air and provide oxygen if breathing is difficult. All exposures require immediate professional medical evaluation due to fluorane's severe toxicity.

How to dispose of fluorane appropriately?

Fluorane disposal must comply with strict hazardous waste regulations and requires specialized treatment facilities. Neutralization with calcium hydroxide or calcium carbonate can convert it to less hazardous calcium fluoride under controlled conditions. Never dispose of fluorane through regular drainage systems or waste streams. Professional waste management companies certified for handling corrosive and toxic substances must manage disposal, ensuring compliance with local environmental and safety regulations.

How to transport fluorane?

Fluorane is classified under ADR Class 8 (corrosive substances) with Packaging Group I, indicating maximum danger level. Transportation requires specialized corrosion-resistant containers and vehicles equipped for hazardous materials transport. Drivers must hold ADR certification for dangerous goods. Shipping documentation must include proper shipping names, hazard labels, and emergency response information. Only authorized carriers experienced in handling highly corrosive chemicals should transport fluorane.

Is fluorane subject to particular regulations?

Fluorane is subject to comprehensive regulations under REACH, CLP, and national chemical safety legislation. The GHS classification includes pictograms GHS06 (toxic) and GHS05 (corrosive) with the signal word 'Danger.' Workplace exposure limits are strictly regulated, and users must implement rigorous safety management systems. Import, use, and handling require compliance with industrial chemical regulations, and some applications may need special permits or notifications to regulatory authorities.

Where to buy fluorane in Europe?

Fluorane is available through specialized chemical distributors in Europe, including OYSI, which supplies technical-grade chemicals to industrial customers. Due to its hazardous classification and regulatory requirements, purchases typically require verification of proper handling capabilities, storage facilities, and safety protocols. Buyers must demonstrate compliance with safety regulations and may need to provide end-use certificates. Professional consultation regarding handling and safety requirements is often included with supply.

Data Sources

Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.