SDS Vault Safety Data Sheet Reference

R-134a Refrigerant (HFC-134a)

CAS: 811-97-2 Category: Refrigerants ⚠ WARNING
Also known as: HFC-134a, 1,1,1,2-Tetrafluoroethane, Freon 134a, Forane 134a

Quick Facts

CAS Number811-97-2
Signal WordWARNING
GHS Hazard Classescompressed gas
NFPA RatingHealth: 1 / Flammability: 0 / Reactivity: 1
Common NamesHFC-134a, 1,1,1,2-Tetrafluoroethane, Freon 134a, Forane 134a
PubChem CID12303

Hazard Summary

⚠ WARNING: Common automotive and refrigeration refrigerant. Simple asphyxiant in enclosed spaces. Thermal decomposition (e.g., open flame) produces HF (hydrofluoric acid) — extremely corrosive. EPA phasing out under AIM Act.

GHS Hazard Pictograms

🔵 Compressed Gas

Hazard Statements (H-codes)

H280 – Contains gas under pressure; may explode if heated
H420 – Harms public health and the environment by destroying ozone in the upper atmosphere

Precautionary Statements (P-codes)

P410+P403 – Protect from sunlight; store in well-ventilated place
P271 – Use only in well-ventilated area
P260 – Do not breathe gas

First Aid Measures (Section 4)

👁 Eye Contact
Cryogenic contact: do not rub. Flush with tepid water. Seek medical attention.
🖐 Skin Contact
Cryogenic contact causes frostbite. Rewarm with tepid water. Do not rub. Seek medical attention.
🫁 Inhalation
Remove to fresh air. Simple asphyxiant at high concentrations — call 911 if unconscious. If thermal decomposition occurred, seek emergency care for HF exposure.
🫦 Ingestion
Not applicable under normal conditions.

Storage & Handling

🔒 Storage & Handling: Store cylinders away from heat sources, direct sunlight. Maximum 52 °C (125 °F). Well-ventilated area.

PPE Requirements

Safety glasses
Cryogenic gloves when handling liquid
Flame-resistant clothing near thermal operations
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