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UN/NA 1021 · 1-Chloro-1,2,2,2-tetrafluoroethane
UN/NA 1021 · ERG 2024 · Guide 126
- UN/NA
- 1021
- Edition
- ERG 2024
ERG 2024 lists UN/NA 1021 (1-Chloro-1,2,2,2-tetrafluoroethane) under Guide 126, titled “Gases - Compressed or Liquefied (Including Refrigerant Gases)”.
Material name
1021 on a placard, orange panel or shipping paper
It can stand for either of two ERG 2024 entries: “1-Chloro-1,2,2,2-tetrafluoroethane” and “Refrigerant gas R-124”. Both use Guide 126, so the number alone is enough to find the guide. On a numbered orange panel, 1021 is the lower number (how to read an orange panel).
ERG 2024 markings for 1021
1021 is not highlighted in green (no Table 1 entry), and its guide number 126 has no P.
Entries near 1021
By number (yellow pages): before 1021 come UN/NA 1017 Chlorine (Guide 124); UN/NA 1018 Chlorodifluoromethane (Guide 126) and UN/NA 1020 Chloropentafluoroethane (Guide 126); after it, UN/NA 1022 Chlorotrifluoromethane (Guide 126); UN/NA 1023 Coal gas, compressed (Guide 119) and UN/NA 1026 Cyanogen (Guide 119).
By name (blue pages): “1-Chloro-1,2,2,2-tetrafluoroethane” comes after 1-Bromobutane (UN/NA 1126, Guide 130) and 1-Chloro-1,1-difluoroethane (UN/NA 2517, Guide 115) and before 1-Chloro-2,2,2-trifluoroethane (UN/NA 1983, Guide 126) and 1-Chloropropane (UN/NA 1278, Guide 129).
By name (blue pages): “Refrigerant gas R-124” comes after Refrigerant gas R-115 (UN/NA 1020, Guide 126) and Refrigerant gas R-116 (UN/NA 2193, Guide 126) and before Refrigerant gas R-125 (UN/NA 3220, Guide 126) and Refrigerant gas R-133a (UN/NA 1983, Guide 126).
Other names starting with “Refrigerant”: Refrigerant gas R-32 (UN/NA 3252, Guide 115); Refrigerant gas R-40 (UN/NA 1063, Guide 115); Refrigerant gas R-41 (UN/NA 2454, Guide 115); Refrigerant gas R-114 (UN/NA 1958, Guide 126); Refrigerant gas R-134a (UN/NA 3159, Guide 126) and Refrigerant gas R-143a (UN/NA 2035, Guide 115).
Guide 126 · Library
Guide 126 covers 42 UN/NA numbers. The 12 around 1021 in the guide’s number order: UN/NA 1009 Bromotrifluoromethane; UN/NA 1018 Chlorodifluoromethane; UN/NA 1020 Chloropentafluoroethane; UN/NA 1022 Chlorotrifluoromethane; UN/NA 1028 Dichlorodifluoromethane; UN/NA 1029 Dichlorofluoromethane; UN/NA 1044 Fire extinguishers with compressed or liquefied gas; UN/NA 1078 Refrigerant gas, n.o.s.; UN/NA 1080 Sulfur hexafluoride; UN/NA 3339 Refrigerant gas R-407B; UN/NA 3340 Refrigerant gas R-407C; UN/NA 3500 Chemical under pressure, n.o.s.
Source: ERG 2024 (U.S. DOT PHMSA, Transport Canada, SICT Mexico), for the initial phase of a transportation incident only. Hazora is not an official ERG publication and is not affiliated with or endorsed by these or any other government agencies.