Extinguishing Media:carbon dioxide, regular dry chemical Large fires:
Flood with fine water spray.
Fire Fighting Procedures:Move container from fire area if it can be
done without risk. Cool containers with water spray until well
after the fire is out. Stay away from the ends of tanks. For fires
in cargo or storage area: Cool containers with water from unmanned
hose holder or monitor nozzles until well after fire is out. If
this is impossible then take the following precautions: Keep
unnecessary people away, isolate hazard area and deny entry. Let
the fire burn. Withdraw immediately in case of rising sound from
venting safety device or any discoloration of tanks due to fire.
For tank, rail car or tank truck: Stop leak if possible without
personal risk. Let burn unless leak can be stopped immediately. For
smaller tanks or cylinders, extinguish and isolate from other
flammables. Evacuation radius: 800 meters (1/2 mile). Do not
attempt to extinguish fire unless flow of material can be stopped
first. Flood with fine water spray. Cool containers with water
spray until well after the fire i out. Apply water from a protected
location or from a safe distance. Avoid inhalation of material or
combustion by-products. Stay upwind and keep out of low areas.
Evacuate if fire gets out of control or containers are directly
exposed to fire. Evacuation radius: 500 meters (1/3 mile). Consider
downwind evacuation if material is leaking.
Unusual Fire/Explosion Hazard:Severe fire hazard. Containers may
rupture or explode if exposed to heat.

Spill Release Procedures:Avoid heat, flames, sparks and other sources
of ignition. Do not touch spilled material. Stop leak if possible
without personal risk. Reduce vapors with water spray. Keep
unnecessary people away, isolate hazard area and deny entry. Remove
sources of ignition. Ventilate closed spaces before entering.
Neutralizing Agent:

Handling and Storage Precautions:Store and handle in accordance with
all current regulations and standards. Subject to storage
regulations: U.S. OSHA 29 CFR 1910.101. Grounding and bonding
required. Store in a tightly closed container. Store below 49 C.
Store in a cool, dry place. Store in a well-ventilated area. Keep
separated from incompatible substances.
Other Precautions:

Respiratory Protection:Under conditions of frequent use or heavy
exposure, respiratory protection may be needed. Respiratory
protection is ranked in order from minimum to maximum. Consider
warning properties before use. For Unknown Concentrations or
Immediately Dangerous to Life or Health - Any supplied-air
respirator with full facepiece and operated in a pressure-demand or
other positive-pressure mode in combination with a separate escape
supply. Any self-contained breathing apparatus with a full
facepiece.
Ventilation:Ventilation equipment should be explosion-resistant if
explosive concentrations of material are present. Provide local
exhaust ventilation system. Ensure compliance with applicable
exposure limits.
Protective Gloves:Wear insulated gloves.
Eye Protection:For the gas: Eye protection not required, but
recommended. For the liquid: Wear splash resistant safety goggles.
Contact lenses should not be worn. Provide an emergency eye wash
fountain and quick drench shower in the immediate work area.
Other Protective Equipment:For the gas: Protective clothing is not
required. For the liquid: Wear appropriate protective, cold
insulating clothing.
Supplemental Safety and Health
METHYLENE FLUORIDE: DIFLUOROMETHANE: 1000 ppm AIHA recommended TWA

Boiling Pt:-62 F (-52 C)
Melt/Freeze Pt:-215 to -213 F (-137 to -136 C)
Vapor Pres:12825 mmHg @ 25 C
Vapor Density:1.8
pH:Not applicable
Evaporation Rate & Reference:Not applicable
Solubility in Water:0.44% @ 25 C
Appearance and Odor:PHYSICAL STATE:gas APPEARANCE:clear COLOR:colorless
ODOR:odorless
Corrosion Rate:

Stability Indicator/Materials to Avoid:Stable at normal temperatures
and pressure.
Stability Condition to Avoid:Avoid heat, flames, sparks and other
sources of ignition. Minimize contact with material. Containers may
rupture or explode if exposed to heat.
Hazardous Decomposition Products:Thermal decomposition products: oxides
of carbon, carbon halides, hydrogen fluoride Thermal decomposition
products: oxides of carbon, carbon halides, hydrogen fluoride
Conditions to Avoid Polymerization:Will not polymerize.

Waste Disposal Methods:Dispose in accordance with all applicable
regulations. Subject to disposal regulations: U.S. EPA 40 CFR 262.
Hazardous Waste Number(s): D001.

Toxicological Information:METHYLENE FLUORIDE: ADDITIONAL DATA:
Stimulants such as epinephrine may induce ventricular fibrillation.

Disclaimer (provided with this information by the compiling agencies):
This information is formulated for use by elements of the Department
of Defense. The United States of America in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. Any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.

Ecological:FATE AND TRANSPORT: KOW: 7762.47 (log = 3.89) (estimated
from water solubility) KOC: 6854.88 (log = 3.84) (estimated from
water solubility) HENRY'S LAW CONSTANT: 2 E -1 atm-m3/mol
BIOCONCENTRATION: 5.51 (estimated from water solubility) AQUATIC
PROCESSES: 1.9166666 hours (River Model: 1 m deep, 1 m/s flow, 3
m/s wind) ENVIRONMENTAL SUMMARY: Relatively non-persistent in the
environment. Not expected to leach through the soil or the
sediment. Accumulates very little in the bodies of living
organisms. Highly volatile from water.

Transport Information:U.S. DOT 49 CFR 172.101: PROPER SHIPPING NAME:
Difluoromethane or Refrigerant gas R 32 (methylene fluoride) ID
NUMBER: UN3252 HAZARD CLASS OR DIVISION: 2.1 LABELING REQUIREMENTS:
Flammable gas QUANTITY LIMITATIONS: PASSENGER AIRCRAFT OR RAILCAR:
Forbidden CARGO AIRCRAFT ONLY: 150 kg

SARA Title III Information: SARA TITLE III SECTION 302 EXTREMELY
HAZARDOUS SUBSTANCES (40 CFR 355.30): Not regulated. SARA TITLE
III SECTION 304 EXTREMELY HAZARDOUS SUBSTANCES (40 CFR 355.40): Not
regulated. SARA TITLE III SARA SECTIONS 311/312 HAZARDOUS
CATEGORIES (40 CFR 370.21): ACUTE: No CHRONIC: No FIRE: Yes
REACTIVE: No SUDDEN RELEASE: Yes SARA TITLE III SECTION 313 (40
CFR 372.65): Not regulated.
Federal Regulatory Information:CERCLA SECTIONS 102a/103 HAZARDOUS
SUBSTANCES (40 CFR 302.4): Not regulated. OSHA PROCESS SAFETY
(29CFR1910.119): Not regulated.
State Regulatory Information: California Proposition 65: Not regulated.