HazMat Tool — substance information

Hexafluoroethane, or Refrigerant gas R 116

HMT May 2026
UN / ID
UN 2193
Hazard class
2.2
Packing group
ERG guide
ERG 126
Special provisions
Source
49 CFR §172 (2026/05)

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Hexafluoroethane, or Refrigerant gas R 116


Hexafluoroethane is an organofluorine compound with the chemical formula C2F6. It is a non-flammable colorless odorless gas negligibly soluble in water and slightly soluble in methanol. Its structure is F3C−CF3. It is an extremely potent and long-lived greenhouse gas. Wikipedia

Substance Data

Source: PubChem (HSDB, 04.12.2019)

CAS-Number

76-16-4

Flash Point

n/a

Boiling Point

n/a

Emergency Response Guide No. 126

Hazardous Materials Table

Source: 49 CFR §172 (2026/05)

(3) Hazard Class

2.2
Non-toxic, non-flammable gases

(4) Identification number Help

UN 2193

(5) Packing Group Help

n/a

(6) Labels Help

Non-toxic, non-flammable gases (2.2)

(7) Special Provisions (§172.102) Help

(8) Packing Authorizations (§173.***) Help

(8A) Exceptions306see 49 CFR §173.306
(8B) Non-bulk304see 49 CFR §173.304
(8C) Bulk314, 315see 49 CFR §173.314, 315

(9) Quantity Limits Help

(9A) Passenger aircraft/rail75 kg
(9B) Cargo aircraft only150 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other n/a

Segregation chart for load, transport, and storage

This chart shows whether loading, transport, or storage with other hazard classes is permitted, prohibited, or restricted. Based on 49 CFR §177.848.

Prohibited Must not be loaded, transported, or stored together in the same vehicle or facility.
Permitted May be loaded, transported, or stored together.
Restricted May be loaded, transported, or stored together only with restrictions.