BORON TRIFLUORIDE DIMETHYL ETHERATE

A fuming liquid. Corrosive to skin, eyes and mucous membranes. May be toxic by inhalation. Used as a catalyst in chemical reactions.

• Highly Flammable
• Known Catalytic Activity
• Water-Reactive
• Air-Reactive

Highly flammable. In moist air forms dense white pungent fumes, corrosive to skin, avoid inhalation [Merck 11th ed. 1989]. Upon exposure to water may emit flammable and corrosive vapors, including hydrofluoric acid fumes.

Fire may produce irritating or poisonous gases. Flammable/combustible material which may be ignited by heat spark or flame. Vapors may travel to a source of ignition and flash back. Container may explode in heat of fire. Vapor explosion hazard indoors, outdoors, or in sewer. Runoff to sewer may create fire or explosion hazard. When heated to decomposition, it emits toxic fumes of fluorides. (EPA, 1998)

This material is highly toxic by inhalation. (EPA, 1998)

BORON TRIFLUORIDE DIMETHYL ETHERATE is a flammable, corrosive, and toxic liquid, moisture-sensitive. Emits toxic fluoride fumes when heated to decomposition [Lewis, 3rd ed., 1993, p. 189].

• Ethers
• Fluoride Salts, Soluble
• Acids, Weak

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

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

Excerpt from 139 [Substances - Water-Reactive (Emitting Flammable and Toxic Gases)]:

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 2965 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)

Wear self-contained, positive- pressure breathing apparatus and full protective clothing. Move containers from fire area if possible. Do not get water inside containers. Spray cooling water on containers that are exposed to flame until well after fire is out. Withdraw immediately in case of rising sound from venting safety device or any discoloration of tank due to fire. Isolate for 1/2 mile in all directions if tank car or truck is involved in fire.

This material may react violently with water. For small fires, use dry chemical, carbon dioxide, water spray, or foam. For large fires, use water spray, fog, or foam. (EPA, 1998)

Excerpt from 139 [Substances - Water-Reactive (Emitting Flammable and Toxic Gases)]:

ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area. Do not touch or walk through spilled material. Stop leak if you can do it without risk. DO NOT GET WATER on spilled substance or inside containers. Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material. FOR CHLOROSILANES, use AFFF alcohol-resistant medium-expansion foam to reduce vapors.

SMALL SPILL: Cover with DRY earth, DRY sand or other non-combustible material followed with plastic sheet to minimize spreading or contact with rain. Dike for later disposal; do not apply water unless directed to do so.

POWDER SPILL: Cover powder spill with plastic sheet or tarp to minimize spreading and keep powder dry. DO NOT CLEAN-UP OR DISPOSE OF, EXCEPT UNDER SUPERVISION OF A SPECIALIST. (ERG, 2020)

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)

Normalized Breakthrough Times (in Minutes)

Chemical	CAS Number	State	QS	QC	SL	C3	TF	TP	RC	TK	RF
Boron trifluoride dimethyl etherate	353-42-4	Liquid				>480	>480	>480

Special Warning from DuPont: Tychem® and Tyvek® fabrics should not be used around heat, flames, sparks or in potentially flammable or explosive environments. Only...

(DuPont, 2023)

Warning: This material is highly toxic by inhalation.

Signs and Symptoms of Boron Trifluoride Compound With Methyl Ether Exposure: Acute exposure to boron trifluoride compound with methyl ether may result in strong irritation of the eyes, skin, and respiratory tract. Direct contact may cause dermal or corneal burns. Boron trifluoride itself can cause severe respiratory irritation with chemical pneumonitis and pulmonary edema. Irritation or burns of the esophagus or gastrointestinal tract may occur following ingestion. Neurologic effects may include CNS depression and coma.

Emergency Life-Support Procedures: Acute exposure to boron trifluoride compound with methyl ether 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 trifluoride compound with methyl ether.
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 supplemental oxygen or other respiratory support.
3. Obtain authorization and/or further instructions from the local hospital for performance of other invasive procedures.
4. Rush to a health care facility.

Dermal/Eye Exposure:
1. Remove victims from exposure. Emergency personnel should avoid self-exposure to boron trifluoride compound with methyl ether.
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. Remove and isolate contaminated clothing as soon as possible.
4. If eye exposure has occurred, flush with lukewarm water for at least 15 minutes.
5. Wash exposed skin areas thoroughly with soap and water.
6. Treat dermal irritation or burns with standard topical therapy.
7. Obtain authorization and/or further instructions from the local hospital for performance of other invasive procedures.
8. Rush to a health care facility.

Ingestion Exposure:
1. 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.
2. DO NOT induce vomiting or attempt to neutralize.
3. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures.
4. Immediately dilute with 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 be given only if victims are conscious and alert.
5. Rush to a health care facility. (EPA, 1998)

• BORANE, TRIFLUORO-, COMPOUND WITH OXYBIS[METHANE] (1:1)
• BORON FLUORIDE (BF3), COMPOUND WITH METHYL ETHER (1:1)
• BORON FLUORIDE COMPLEX WITH DIMETHYL ETHER
• BORON TRIFLUORIDE COMPOUND WITH METHYL ETHER
• BORON TRIFLUORIDE COMPOUND WITH METHYL ETHER (1:1)
• BORON TRIFLUORIDE COMPOUND WITH METHYL ETHER(1:1)
• BORON TRIFLUORIDE DIMETHYL ETHER ADDITION COMPOUND
• BORON TRIFLUORIDE DIMETHYL ETHER COMPLEX
• BORON TRIFLUORIDE DIMETHYL ETHERATE
• BORON TRIFLUORIDE-DIMETHYL ETHER
• BORON TRIFLUORIDE-DIMETHYL ETHER COMPLEX
• BORON, TRIFLUORO(OXYBIS(METHANE))-,(T-4)-
• BORON, TRIFLUORO[OXYBIS[METHANE]]-, (T-4)-
• (DIMETHYL ETHER)TRIFLUOROBORON
• METHANE, OXYBIS-, BORON COMPLEX
• METHANE, OXYBIS-, COMPOUND WITH TRIFLUOROBORANE (1:1)
• METHYL ETHER, COMPOUND WITH BF3 (1:1)
• METHYL ETHER, COMPOUND WITH BORON FLUORIDE (BF3) (1:1)
• METHYL ETHER, COMPOUND WITH BORON FLUORIDE(1:1)