Substance profile
Sulfuryl fluoride
Sulfuryl fluoride is a colorless gas and is odorless.
01 · Identification
What Sulfuryl fluoride is
Sulfuryl fluoride is a colorless gas and is odorless. Its molecular formula is F2O2S and its molecular weight is 102.06 g/mol. It boils at -55.4 °C, melts at -136 °C.
Under the GHS it carries the signal word Danger. It is classed as corrosives.
Other names for Sulfuryl fluoride
- sulphuryl difluoride
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H331 | Toxic if inhaled. |
| H373 | May cause damage to organs <or state all organs affected, if known> through prolonged or repeated exposure <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H400 | Very toxic to aquatic life. |
Precautionary statements: P260, P270, P271, P273, P304, P310, P314, P391, P501
03 · Physical and chemical properties
Sulfuryl fluoride properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | -55.38 °C (-67.7 °F) | HSDB | |
| -55.56 °C (-68 °F) | NIOSH | ||
| -55.56 °C (-68 °F) | at 760 mmHg | CAMEO | |
| Melting point | -135.82 °C (-212.5 °F) | HSDB | |
| -135.56 °C (-212 °F) | NIOSH | ||
| Density | 0.0037 g/cm³ | HSDB | |
| 0.0042 g/cm³ | HSDB | ||
| Solubility | 4-5 ml gas/100 ml water; 24-27 ml gas/100 ml alc; 136-138 ml gas/100 ml carbon tetrachloride; 210-220 ml gas/100 ml toluene | HSDB | |
| SLIGHTLY SOL IN ALKALIS | HSDB | ||
| MISCIBLE WITH METHYL BROMIDE; SPARINGLY SOL IN MOST ORG SOLVENTS | HSDB | ||
| Vapor pressure | 12010 mmHg | at 21.11 °C | NIOSH |
| 12750 mmHg | at 21 °C | HSDB | |
| Lower explosive limit (LEL) | Nonflammable Gas | NIOSH | |
| Vapor density | 3.5 (air = 1) | HSDB | |
| 3.72 (air = 1) | CAMEO | ||
| Critical temperature and pressure | 20 °C (68 °F) | HSDB | |
| Corrosivity | NON-CORROSIVE | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Sulfuryl fluoride
Storage conditions
MAY BE STORED IN COMPRESSED FORM IN STEEL CYLINDERS OR IN GASOMETER OVER SULFURIC ACID.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Can react with water, steam.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
SULFURYL FLUORIDE is a gas which is unaffected by water at temperatures up to 300F, but is slowly hydrolyzed by solutions of strong bases (Adv. Inorganic Chemistry, Cotton and Wilkinson, 1972, p. 455). The products of hydrolysis are hydrofluoric acid and sulfuric acid and it is soluble in ethanol, toluene and carbon tetrachloride (Pesticide Profiles, Kamrin, ed., 1997, p. 548). It is much less reactive than sulfuryl chloride (Adv. Inorganic Chemistry, Cotton and Wilkinson, 1972, p. 455).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Sulfuryl fluoride in the storage compatibility matrix →