MATERIAL SAFETY DATA SHEET
SECTION I - CHEMICAL INFORMATION
Trade Name: HFC-152a
Chemical Name: Difluoroethane, R152a
Product Supplied By: AW Distributing, Inc.
Address & Phone #: 2024 Middlefield Rd., Redwood City, CA 94063
Emergency Phone #: Chemtrec 1-800-424-9300
Mfg. Model No.: AE420BWON
SECTION II - HAZARDOUS INGREDIENTS
Ingredients CAS # % TLV PEL UNITS
1,1-Difluoroethane 75-37-6 100
SECTION III - PHYSICAL DATA
Boiling Point (°F) -25 C (-13F) Specific Gravity (H2O=1)
Vapor Pressure (MM Hg) 87 psia at 25 deg C (77
Percent Volatile by Vol. 100 WT %
Vapor Density (Air=1) 2.4 at 25 deg C (77 deg F) Density 0.90 g/cc at 25 deg C (77
deg F) - Liquid
Solubility in Water 0.28 WT% at 25 deg C (77
Evap Rate (Ether = 1)
Appearance and Odor Slight ethereal, Clear,
SECTION IV - HAZARDOUS REACTIVITY
Instability - Stable, however, avoid open flames and high temperatures.
Incompatibility - Incompatible with alkaline or alkaline earth metals.
Decomposition - Decomposition products are hazardous. This material can be decomposed by high temperatures
(open flames, glowing metal surfaces, etc.) forming hydrofluoric acid and possible carbonyl fluoride.
Polymerization - Polymerization will not occur.
SECTION V - FIRE AND EXPLOSION HAZARD DATA
Flash Point -<-50 C (<-58 F) Flammable Limits LEL - 3.9 Auto Ig. 454C UEL - 16.9
Fire and Explosion Hazards - Flammable. Cylinders are equipped with temperature and pressure relief devices
but still may rupture under fire conditions. Use water spray to cool cylinders and tanks.
Extinguishing Media - Water spray, Water fog, Dry chemical.
Special Fire Fighting Procedures - Keep container cool with water spray. If gas exiting container ignites, stop
flow of gas. Do not put out the fire unless leak can be stopped immediately. Self-contained breathing apparatus
(SCBA) is required if containers rupture and contents are released under fire conditions.
National Fire Protection Association (NFPA 30B) - Level 1 Aerosols (lowest flammability rating)
Consumer Products Safety Commission (CPSC 1500.3 (c)(6).16CFR - Not flammable
SECTION VI - HEALTH HAZARD INFORMATION
Potential Health Effects:
Inhalation of high concentrations of vapor is harmful and may cause heart irregularities, unconsciousness, or death.
Intentional misuse or deliberate inhalation may cause death without warning. Vapor reduces oxygen available for
breathing and is heavier than air. Liquid contact can cause frostbite.
Human Health Effects:
Contact with the liquid may cause frostbite. Overexposure by inhalation may include nonspecific discomfort, such
as nausea, headache, or weakness; or temporary nervous system depression with anesthetic effects such as
dizziness, headache, confusion, incoordination and loss of consciousness. Higher exposures (>20%) may cause
temporary lung irritation effects with cough, discomfort, difficulty breathing, or shortness of breath; or temporary
alteration of the heart’s electrical activity with irregular pulse, palpitations, or inadequate circulation, abnormal kidney
function as detected by laboratory tests. Gross overexposure may be fatal.
Individual with preexisting diseases of the central nervous or cardiovascular system may have increased
susceptibility to the toxicity of excessive exposures.
Eyes: Immediately flush eyes with large amounts of water for at least 15 minutes while holding the eyelids open.
Get prompt medical attention.
Skin: Immediately remove contaminated clothing; wash skin with large amounts of water for at least 15 minutes.
Treat for frostbite with gentle warming affected area if necessary. Get prompt medical attention.
Inhalation: Move victim to fresh air and restore breathing if necessary. Stay with victim until arrival of emergency
Ingestion: Contact local Poison Control Center or physician immediately!
SECTION VII - TOXICOLOGICAL INFORMATION
The compound is untested for skin or eye irritation, and for animal sensitization. Effects in animals from single, high
exposure by inhalation include labored breathing, lung irritation, lethargy, incoordination, and loss of consciousness.
Cardiac sensitization occurred in dogs exposed to a concentration of 150,000 ppm in air and given an intravenous
epinephrine challenge. Effects of repeated exposure include increased urinary fluorides, reduced kidney weight, and
reversible kidney changes. The effects of a single, high oral dose include weight loss and lethargy.
Tests in animals demonstrate no carcinogenic activity or developmental effects. Tests in animals for reproductive
effects have not been performed. This compound does not produce genetic damage in bacterial cell cultures but has
not been tested in animals.
SECTION VIII - TRANSPORTATION INFORMATION
DOT - Domestic Ground Transportation
Proper Shipping Name DIFLUOROETHANE, R152a
Hazard Class 2.1
I.D. No. (UN/NA) UN 1030
Shipping Paper Information: None required
Mark Packages with: DIFLUOROETHANE, R152a, UN 1030, ORM-D
Placarding: None required
SECTION IX - SPECIAL PROTECTION INFORMATION
Waste Disposal Method - Reclaim by distillation, incinerate, or remove to a permitted waste facility. Comply with
Federal, State and Local regulations.
This material may be a RCRA Hazardous waste upon disposal due to the ignitability characteristic.
PPE-PERSONAL PROTECTIVE EQUIPMENT REQUIRED: NONE