SAFETY DATA SHEET

Genetron® 134a

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SECTION 1. PRODUCT AND COMPANY IDENTIFICATION 

Product name : Genetron® 134a 

MSDS Number : 000000009876 

Product Use Description : Refrigerant, Propellant

Company : Honeywell International, Inc. 

101 Columbia Road 

Morristown, NJ 07962-1057 

For more information call : 800-522-8001 

+1-973-455-6300 

 (Monday-Friday, 9:00am-5:00pm) 

In case of emergency call : Medical: 1-800-498-5701 or +1-303-389-1414 

: Transportation (CHEMTREC): 1-800-424-9300 or +1-703-

527-3887 

: 

 : (24 hours/day, 7 days/week) 

SECTION 2. HAZARDS IDENTIFICATION 

Emergency Overview 

Form : Liquefied gas 

Color : colourless 

Odor : weak 

Hazard Summary : Warning! Container under pressure. This product is not 

flammable at ambient temperatures and atmospheric 

pressure. Gas reduces oxygen available for breathing. 

Causes asphyxiation in high concentrations. The victim will 

not realize that he/she is suffocating. Excessive exposure may 

cause central nervous system effects including drowsiness 

and dizziness. Excessive exposure may also cause cardiac 

arrhythmia. Do not breathe vapour. Rapid evaporation of the 

liquid may cause frostbite. Avoid contact with skin, eyes and 
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clothing. At higher temperatures, (>250 C), decomposition 

products may include hydrofluoric acid (HF) and carbonyl 

halides. The ACGIH Threshold Limit Values (2007) for 

Hydrogen Fluoride are TLV-TWA 0.5 ppm and Ceiling 

Exposure Limit 2 ppm. 

Potential Health Effects 

Skin : Avoid skin contact with leaking liquid (danger of frostbite).

May cause frostbite.

Irritating to skin.

Eyes : Causes serious eye irritation.

May cause frostbite.

Ingestion : Unlikely route of exposure.

Effects due to ingestion may include:

Gastrointestinal discomfort

Inhalation : Gas reduces oxygen available for breathing.

Causes asphyxiation in high concentrations. The victim will 

not realize that he/she is suffocating.

Excessive exposure may cause central nervous system 

effects including drowsiness and dizziness. Excessive 

exposure may also cause cardiac arrhythmia.

Chronic Exposure : None known.

Carcinogenicity 

No component of this product present at levels greater than or equal to 0.1% is identified as a known 

or anticipated carcinogen by NTP, IARC, or OSHA. 

SECTION 3. COMPOSITION/INFORMATION ON INGREDIENTS 

Formula : CF3CH2F 

Chemical nature : Substance 

Chemical Name CAS-No. Concentration 
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1,1,1,2-Tetrafluoroethane 811-97-2 99.80 %

SECTION 4. FIRST AID MEASURES 

Inhalation : Move to fresh air. If breathing is irregular or stopped, 

administer artificial respiration. Use oxygen as required, 

provided a qualified operator is present. Call a physician. Do 

not give drugs from adrenaline-ephedrine group. 

Skin contact : After contact with skin, wash immediately with plenty of water. 

If there is evidence of frostbite, bathe (do not rub) with 

lukewarm (not hot) water. If water is not available, cover with a 

clean, soft cloth or similar covering. If symptoms persist, call a 

physician. 

Eye contact : Rinse immediately with plenty of water, also under the eyelids, 

for at least 15 minutes. In case of frostbite water should be 

lukewarm, not hot. If symptoms persist, call a physician. 

Ingestion : Unlikely route of exposure. As this product is a gas, refer to the 

inhalation section. Do not induce vomiting without medical 

advice. Call a physician immediately. 

Notes to physician 

Treatment : Because of the possible disturbances of cardiac rhythm, 

catecholamine drugs, such as epinephrine, should be used 

with special caution and only in situations of emergency life 

support. Treatment of overexposure should be directed at the 

control of symptoms and the clinical conditions. Treat frostbitten areas as needed. 

SECTION 5. FIREFIGHTING MEASURES 

Suitable extinguishing media : The product is not flammable. 

Use water spray, alcohol-resistant foam, dry chemical or 

carbon dioxide. 

Use extinguishing measures that are appropriate to local 

circumstances and the surrounding environment. 

Specific hazards during : Contents under pressure. 
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firefighting This product is not flammable at ambient temperatures and 

atmospheric pressure. 

However, this material can ignite when mixed with air under 

pressure and exposed to strong ignition sources. 

Container may rupture on heating. 

Cool closed containers exposed to fire with water spray. 

Do not allow run-off from fire fighting to enter drains or water 

courses. 

Vapours are heavier than air and can cause suffocation by 

reducing oxygen available for breathing. 

In case of fire hazardous decomposition products may be 

produced such as: 

Hydrogen halides 

Hydrogen fluoride 

Carbon monoxide 

Carbon dioxide (CO2) 

Carbonyl halides 

Special protective equipment 

for firefighters 

: In the event of fire and/or explosion do not breathe fumes. 

Wear self-contained breathing apparatus and protective suit. 

No unprotected exposed skin areas. 

SECTION 6. ACCIDENTAL RELEASE MEASURES 

Personal precautions : Immediately evacuate personnel to safe areas.

Keep people away from and upwind of spill/leak.

Wear personal protective equipment. Unprotected persons 

must be kept away.

Remove all sources of ignition.

Avoid skin contact with leaking liquid (danger of frostbite).

Ventilate the area.

After release, disperses into the air.

Vapours are heavier than air and can cause suffocation by 

reducing oxygen available for breathing.

Avoid accumulation of vapours in low areas.

Unprotected personnel should not return until air has been 

tested and determined safe.

Ensure that the oxygen content is >= 19.5%.

Environmental precautions : Prevent further leakage or spillage if safe to do so.

The product evaporates readily.
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Methods for cleaning up : Ventilate the area.

SECTION 7. HANDLING AND STORAGE 

Handling 

Handling : Handle with care.

Avoid inhalation of vapour or mist.

Do not get in eyes, on skin, or on clothing.

Wear personal protective equipment.

Use only in well-ventilated areas.

Pressurized container. Protect from sunlight and do not expose 

to temperatures exceeding 50 °C.

Follow all standard safety precautions for handling and use of 

compressed gas cylinders.

Use authorized cylinders only.

Protect cylinders from physical damage.

Do not puncture or drop cylinders, expose them to open flame 

or excessive heat.

Do not pierce or burn, even after use. Do not spray on a naked 

flame or any incandescent material.

Do not remove screw cap until immediately ready for use.

Always replace cap after use.

Advice on protection 

against fire and explosion 

: The product is not flammable.

Can form a combustible mixture with air at pressures above 

atmospheric pressure.

Storage 

Requirements for storage 

areas and containers 

: Pressurized container: protect from sunlight and do not expose 

to temperatures exceeding 50 °C. Do not pierce or burn, even 

after use.

Keep containers tightly closed in a dry, cool and well-ventilated 

place.

Storage rooms must be properly ventilated.

Ensure adequate ventilation, especially in confined areas.

Protect cylinders from physical damage.

SECTION 8. EXPOSURE CONTROLS/PERSONAL PROTECTION
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Protective measures : Do not breathe vapour.

Avoid contact with skin, eyes and clothing.

Ensure that eyewash stations and safety showers are close to 

the workstation location.

Engineering measures : General room ventilation is adequate for storage and handling.

Perform filling operations only at stations with exhaust 

ventilation facilities.

Eye protection : Wear as appropriate:

Safety glasses with side-shields

If splashes are likely to occur, wear:

Goggles or face shield, giving complete protection to eyes

Hand protection : Leather gloves

In case of contact through splashing:

Protective gloves

Neoprene gloves

Polyvinyl alcohol or nitrile- butyl-rubber gloves

Skin and body protection : Avoid skin contact with leaking liquid (danger of frostbite).

Wear cold insulating gloves/ face shield/ eye protection.

Respiratory protection : In case of insufficient ventilation, wear suitable respiratory 

equipment.

Wear a positive-pressure supplied-air respirator.

Vapours are heavier than air and can cause suffocation by 

reducing oxygen available for breathing.

For rescue and maintenance work in storage tanks use selfcontained breathing apparatus.

Hygiene measures : Handle in accordance with good industrial hygiene and safety 

practice.

Ensure adequate ventilation, especially in confined areas.

Avoid contact with skin, eyes and clothing.

Remove and wash contaminated clothing before re-use.

Keep working clothes separately.

Exposure Guidelines

Components CAS-No. Value Control 

parameters 

Upda

te 

Basis 
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1,1,1,2-

Tetrafluoroethane 

811-97-2 TWA :

time 

weighted 

average 

(1,000 ppm) Honeywell:Limit 

established by 

Honeywell 

International Inc.

1,1,1,2-

Tetrafluoroethane 

811-97-2 TWA :

time 

weighted 

average 

4,240 mg/m3 

(1,000 ppm) 

2007 WEEL:US. AIHA 

Workplace 

Environmental 

Exposure Level 

(WEEL) Guides

SECTION 9. PHYSICAL AND CHEMICAL PROPERTIES 

Physical state : Liquefied gas

Color : colourless 

Odor : weak 

pH : Note: neutral 

Melting point/freezing point : -101 °C 

Boiling point/boiling range : -26.2 °C 

Flash point : Note: not applicable 

Evaporation rate : > 1 

Method: Compared to CCl4. 

Lower explosion limit : Note: None 

Upper explosion limit : Note: None 

Vapor pressure : 5,915 hPa 
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at 21.1 °C(70.0 °F) 

 14,713 hPa 

at 54.4 °C(129.9 °F) 

Vapor density : 3.5 

Density : 1.2 g/cm3 

Water solubility : 1.5 g/l 

Partition coefficient: noctanol/water : log Pow: 1.06 

Note: The product is more soluble in octanol. 

Ignition temperature : > 750 °C 

Autoignition temperature : > 750 °C 

Decomposition temperature : > 250 °C 

Note: To avoid thermal decomposition, do not overheat. 

Molecular Weight : 102.02 g/mol 

Global warming potential 

(GWP) 

: 1,300

Ozone depletion potential 

(ODP) 

: 0

SECTION 10. STABILITY AND REACTIVITY 

Chemical stability : Stable under normal conditions. 

Possibility of hazardous 

reactions 

: Hazardous polymerisation does not occur. 

Conditions to avoid : Pressurized container. Protect from sunlight and do not 

expose to temperatures exceeding 50 °C. 

Decomposes under high temperature. 

Some risk may be expected of corrosive and toxic 
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decomposition products. 

Can form a combustible mixture with air at pressures above 

atmospheric pressure. 

Do not mix with oxygen or air above atmospheric pressure. 

Incompatible materials to 

avoid 

: Finely divided aluminium 

Potassium 

Calcium 

Powdered metals 

Aluminium 

Magnesium 

Zinc 

Hazardous decomposition 

products 

: Halogenated compounds 

Hydrogen fluoride 

Carbonyl halides 

Carbon oxides 

SECTION 11. TOXICOLOGICAL INFORMATION 

Acute inhalation toxicity : LC50: > 500000 ppm 

Exposure time: 4 h 

Species: rat 

Sensitisation : Cardiac sensitization 

Species: dogs 

Note: No-observed-effect level 50 000 ppm Lowest 

observable effect level 75 000 ppm 

Repeated dose toxicity : Species: rat 

NOEL: 40000 ppm 

Genotoxicity in vitro : Note: In vitro tests did not show mutagenic effects 

Further information : Note: Vapours are heavier than air and can cause suffocation 

by reducing oxygen available for breathing. Rapid evaporation 

of the liquid may cause frostbite. Avoid skin contact with 
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leaking liquid (danger of frostbite).

SECTION 12. ECOLOGICAL INFORMATION 

Further information on ecology 

Additional ecological 

information 

: Accumulation in aquatic organisms is unlikely. 

This product contains greenhouse gases which may 

contribute to global warming. Do NOT vent to the atmosphere. 

To comply with provisions of the U.S. Clean Air Act, any 

residual must be recovered. 

SECTION 13. DISPOSAL CONSIDERATIONS 

Disposal methods : Observe all Federal, State, and Local Environmental 

regulations. 

Note : This product is subject to U.S. Environmental Protection 

Agency Clean Air Act Regulations Section 608 in 40 CFR Part 

82 regarding refrigerant recycling.

SECTION 14. TRANSPORT INFORMATION 

DOT UN/ID No. : UN 3159

Proper shipping name : 1,1,1,2-Tetrafluoroethane 

Class 2.2 

Packing group 

Hazard Labels 2.2

IATA UN/ID No. : UN 3159 

Description of the goods : 1,1,1,2-Tetrafluoroethane 

Class : 2.2 

Hazard Labels : 2.2 

Packing instruction (cargo 

aircraft) 

: 200 

Packing instruction 

(passenger aircraft) 

: 200 
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IMDG UN/ID No. : UN 3159 

Description of the goods : 1,1,1,2-Tetrafluoroethane 

Class : 2.2 

Hazard Labels : 2.2 

EmS Number : F-C, S-V 

Marine pollutant : no 

SECTION 15. REGULATORY INFORMATION 

Inventories 

US. Toxic Substances 

Control Act 

: On TSCA Inventory 

Australia. Industrial 

Chemical (Notification and 

Assessment) Act 

: On the inventory, or in compliance with the inventory 

Canada. Canadian 

Environmental Protection 

Act (CEPA). Domestic 

Substances List (DSL) 

: All components of this product are on the Canadian DSL list. 

Japan. Kashin-Hou Law 

List 

: On the inventory, or in compliance with the inventory 

Korea. Existing Chemicals 

Inventory (KECI) 

: On the inventory, or in compliance with the inventory 

Philippines. The Toxic 

Substances and Hazardous 

and Nuclear Waste Control 

Act 

: On the inventory, or in compliance with the inventory 

China. Inventory of Existing 

Chemical Substances 

: On the inventory, or in compliance with the inventory 

NZIOC - New Zealand : On the inventory, or in compliance with the inventory 

National regulatory information 
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SARA 302 Components : SARA 302: No chemicals in this material are subject to the 

reporting requirements of SARA Title III, Section 302. 

SARA 313 Components : SARA 313: This material does not contain any chemical 

components with known CAS numbers that exceed the 

threshold (De Minimis) reporting levels established by SARA 

Title III, Section 313. 

SARA 311/312 Hazards : Acute Health Hazard 

Sudden Release of Pressure Hazard 

California Prop. 65 : This product does not contain any chemicals known to State of 

California to cause cancer, birth defects, or any other 

reproductive harm. 

New Jersey RTK : 1,1,1,2-Tetrafluoroethane 811-97-2 

Pennsylvania RTK : 1,1,1,2-Tetrafluoroethane 811-97-2 

WHMIS Classification : A: Compressed Gas 

This product has been classified according to the hazard criteria 

of the CPR and the MSDS contains all of the information 

required by the CPR.

Global warming potential : 1,300 

Ozone depletion potential 

(ODP) 

: 0 

SECTION 16. OTHER INFORMATION 

HMIS III NFPA

Health hazard : 1 2 

Flammability : 1 1 
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Physical Hazard : 0 

Instability : 0 

Hazard rating and rating systems (e.g. HMIS® III, NFPA): This information is intended solely for the 

use of individuals trained in the particular system. 

Further information 

The information provided in this Safety Data Sheet is correct to the best of our knowledge, 

information and belief at the date of its publication. The information given is designed only as a 

guidance for safe handling, use, processing, storage, transportation, disposal and release and is not 

to be considered a warranty or quality specification. The information relates only to the specific 

material designated and may not be valid for such material used in combination with any other 

materials or in any process, unless specified in the text. Final determination of suitability of any 

material is the sole responsibility of the user. This information should not constitute a guarantee for 

any specific product properties. 

Changes since the last version are highlighted in the margin. This version replaces all previous 

versions.

Previous Issue Date: 12/15/2009

Prepared by: Honeywell Performance Materials and Technologies Product Stewardship Group