METHANESULFONYL FLUORIDE

Liquid. (EPA, 1998)

• Water-Reactive

On contact with moisture it produces highly corrosive and toxic fumes of hydrogen fluoride gas.

When heated to decomposition, it emits very toxic fumes of fluorides and sulfur oxides. (EPA, 1998)

Highly toxic when inhaled. (EPA, 1998)

METHANESULFONYL FLUORIDE is corrosive, toxic liquid. Vigorous reaction with water, steam, alkali. A dangerous storage hazard. On contact with moisture it produces highly corrosive and toxic fumes of hydrogen fluoride gas. When heated to decomposition it emits toxic fumes of fluoride, and oxides of sulfur [M. K.]. May react vigorously or explosively if mixed with diisopropyl ether or other ethers in the presence of trace amounts of metal salts [J. Haz. Mat., 1981, 4, 291].

• Sulfonates, Phosphonates, and Thiophosphonates, Organic
• Acyl Halides, Sulfonyl Halides, and Chloroformates
• Halogenating Agents

Use caution: Liquids with this reactive group classification have been known to react with the absorbents listed below.

• Cellulose-Based Absorbents
• Mineral-Based & Clay-Based Absorbents
• Dirt/Earth

Excerpt from 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:

IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.

SPILL: See ERG Table 1 - Initial Isolation and Protective Action Distances on the UN/NA 3389 datasheet.

FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2020)

Excerpt from 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:

SMALL FIRE: Dry chemical, CO2 or water spray.

LARGE FIRE: Dry chemical, CO2, alcohol-resistant foam or water spray. If it can be done safely, move undamaged containers away from the area around the fire. Dike runoff from fire control for later disposal.

FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. (ERG, 2020)

Avoid inhalation. (EPA, 1998)

For emergency situations, wear a positive pressure, pressure-demand, full facepiece self-contained breathing apparatus (SCBA) or pressure- demand supplied air respirator with escape SCBA and a fully-encapsulating, chemical resistant suit. (EPA, 1998)

No information available.

Warning: Highly toxic when inhaled. Ingestion of methanesulfonyl fluoride produces highly corrosive hydrogen fluoride. Effects may be delayed for several hours. Caution is advised.

Signs and Symptoms of Methanesulfonyl Fluoride Exposure: Signs and symptoms of acute exposure to methanesulfonyl fluoride may include nausea, vomiting, dysphagia, bloody emesis, diarrhea, abdominal pains, and epigastric pain following ingestion. Acute hemorrhagic gastroenteritis has occurred after massive oral overdoses. Cardiac arrythmia, respiratory stimulation, followed by respiratory depression, coughing, and choking may occur following inhalation. Also, hyperactive reflexes, painful muscle spasms, weakness and tetanic (tetanuslike) contractures may be noted.Emergency Life Support Procedures: Acute exposure to methanesulfonyl fluoride exposure may require decontamination and life support for the victims. Emergency personnel should wear protective clothing appropriate to the type and degree of contamination. Air-purifying or supplied-air respiratory equipment should also be worn, as necessary. Rescue vehicles should carry supplies such as plastic sheeting and disposable plastic bags to assist in preventing spread of contamination.

Inhalation Exposure:
1. Move victims to fresh air. Emergency personnel should avoid self-exposure to methanesulfonyl fluoride.
2. Evaluate vital signs including pulse and respiratory rate and note any trauma. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer 100% humidified oxygen or other respiratory support.
3. Transport to a health care facility.
4. Obtain authorization and/or further instructions from the local hospital for performance of other invasive procedures.

Dermal/Eye Exposure:
1. Remove victims from exposure. Emergency personnel should avoid self-exposure to methanesulfonyl fluoride.
2. Evaluate vital signs including pulse and respiratory rate. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer 100% humidified oxygen.
3. Remove contaminated clothing as soon as possible.
4. If eye exposure has occurred, eyes must be flushed with lukewarm water for at least 15 minutes.
5. Wash exposed skin areas thoroughly with soap and water.
6. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures.
7. Transport to a health care facility.

Ingestion Exposure:
1. Evaluate vital signs including pulse and respiratory rate. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer 100% humidified oxygen.
2. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures.
3. DO NOT induce vomiting.
4. Give the victims water or milk: children up to 1 year old, 125 mL (4 oz or 1/2 cup); children 1 to 12 years old, 200 mL (6 oz or 3/4 cup); adults, 250 mL (8 oz or 1 cup). Water or milk should not be given if victims are not conscious and alert.
5. Milk of Magnesia should be administered if victims are conscious and alert. Use
2.5 mL (1/2 tsp) for children up to 1 year old, 5 mL (1 tsp) for children 1 to 12 years old, and 10 mL (2 tsp) for adults. Do not exceed 15 mL (3 tsp or 1 tbsp).
6. Transport to a health care facility. (EPA, 1998)

• FLUORO METHYL SULFONE
• FUMETTE
• MESYL FLUORIDE
• METHANESULFONYL FLUORIDE
• METHANESULPHONYL FLUORIDE
• METHYLSULFONYL FLUORIDE
• MSF