Authorizations for ozone-depleting substances and hydrofluorocarbons

Under the Ozone-depleting Substances and Halocarbon Alternatives Regulations, every person must receive written authorization from the Minister of Environment and Climate Change Canada prior to manufacturing, importing or exporting a "controlled substance". There are two types of authorization: allowances and permits.


Allowances provide authorization for the production and importation of unused hydrochlorofluorocarbons (HCFCs), hydrofluorocarbons (HFCs) and methyl bromide for circumstances not governed by permits, such as the importation of unused methyl bromide for uses other than quarantine or pre-shipment or the importation of unused HCFCs for non-essential uses.

Unlike permits, persons do not apply for consumption allowances. The allowances are entitlements. The regulations provide criteria to determine those activities that would entitle a person to an allowance and define the method by which the quantity of the allowance is calculated. The sum of all allowances within Canada for each group of controlled substance is progressively reduced according to a schedule fixed by the regulations. In order to accommodate the shifting markets allowance holders face, in terms of their needs and choice of supplier, allowance holders may make application to transfer all or some portion of their allowance to others.

At the end of each year, the authorizations provided by permits, allowances and transfers lapse. Persons may reapply for permits and transfers in the succeeding year. Allowance holders are automatically informed of their allowances for the succeeding year.

Hydrochlorofluorocarbon allowances

Hydrofluorocarbon allowances

Methyl bromide allowances


A permit is required by anyone who intends to:

  • import or export a controlled substance that is recovered, recycled, reclaimed or used or a controlled substance for destruction
  • export a controlled substance
  • use methyl bromide for an emergency use or critical use
  • export a product that contains, or is intended to contain, chlorofluorocarbons (CFCs), bromofluorocarbons (halons), bromochlorodifluoromethane, tetrachloromethane (carbon tetrachloride) or 1,1,1-trichloroethane (methyl chloroform)
  • manufacture, import, use, sell, offer for sale, or export a controlled substance for an essential purpose

Controlled substances

Under the Ozone-depleting Substances and Halocarbon Alternatives Regulations, controlled substances are:

Part 1: chlorofluorocarbons (CFCs), bromofluorocarbons, bromochrlorodifluoromethane, tetrachloromethane, 1,1,1-Trichloroethane, hydrobromofluorocarbons and bromochloromethane

  • trichlorofluoromethane (CFC-11)
  • dichlorodifluoromethane (CFC-12)
  • trichlorotrifluoroethane (CFC-113)
  • dichlorotetrafluoroethane (CFC-114)
  • chloropentafluoroethane (CFC-115)
  • other chlorofluorocarbons (CFCs)
  • tetrachloromethane
  • 1,1,1-trichloroethane
  • bromochlorodifluoromethane (halon 1211)
  • bromotrifluoromethane (halon 1301)
  • dibromotetrafluoroethane (halon 2402)
  • bromochloromethane (halon 1011)
  • other bromofluorocarbons or hydrobromofluorocarbons

Part 2: methyl bromide

Part 3: hydrochlorofluorocarbons

  • dichlorofluoromethane (HCFC-21)
  • chlorodifluoromethane (HCFC-22)
  • chlorofluoromethane (HCFC-31)
  • tetrachlorofluoroethane (HCFC-121)
  • trichlorodifluoroethane (HCFC-122)
  • 2,2-dichloro-1,1,1-trifluoroethane (HCFC-123)
  • 1,2-dichloro-1,1,2-trifluoroethane (HCFC-123a)
  • 1,1-dichloro-1,2,2-trifluoroethane (HCFC-123b)
  • 2-chloro-1,1,1,2-tetrafluoroethane (HCFC-124)
  • 1-chloro-1,1,2,2-tetrafluoroethane (HCFC-124a)
  • trichlorofluoroethane (HCFC-131)
  • dichlorodifluoroethane (HCFC-132)
  • chlorotrifluoroethane (HCFC-133)
  • dichlorofluoroethane (HCFC-141), not including HCFC-141b
  • 1,1-dichloro-1-fluoroethane (HCFC-141b)
  • chlorodifluoroethane (HCFC-142), not including HCFC-142b
  • 1-chloro-1,1-difluoroethane (HCFC-142b)
  • chlorofluoroethane (HCFC-151)
  • hexachlorofluoropropane (HCFC-221)
  • pentachlorodifluoropropane (HCFC-222)
  • tetrachlorotrifluoropropane (HCFC-223)
  • trichlorotetrafluoropropane (HCFC-224)
  • dichloropentafluoropropane (HCFC-225), not including HCFC-225ca and HCFC-225cb
  • 1,1-dichloro-2,2,3,3,3-pentafluoropropane (HCFC-225ca)
  • 1,3-dichloro-1,2,2,3,3-pentafluoropropane (HCFC-225cb)
  • chlorohexafluoropropane (HCFC-226)
  • pentachlorofluoropropane (HCFC-231)
  • tetrachlorodifluoropropane (HCFC-232)
  • trichlorotrifluoropropane (HCFC-233)
  • tichlorotetrafluoropropane (HCFC-234)
  • chloropentafluoropropane (HCFC-235)
  • tetrachlorofluoropropane (HCFC-241)
  • trichlorodifluoropropane (HCFC-242)
  • dichlorotrifluoropropane (HCFC-243)
  • chlorotetrafluoropropane (HCFC-244)
  • trichlorofluoropropane (HCFC-251)
  • dichlorodifluoropropane (HCFC-252)
  • chlorotrifluoropropane (HCFC-253)
  • dichlorofluoropropane (HCFC-261)
  • chlorodifluoropropane (HCFC-262)
  • chlorofluoropropane (HCFC-271)

Part 4: hydrofluorocarbons (HFCs)

  • trifluoromethane (HFC-23)
  • difluoromethane (HFC-32)
  • fluoromethane (HFC-41)
  • 1,1,1,2,2-pentafluoroethane (HFC-125)
  • 1,1,2,2-tetrafluoroethane (HFC-134)
  • 1,1,1,2-tetrafluoroethane (HFC-134a)
  • 1,1,2-trifluoroethane (HFC-143)
  • 1,1,1-trifluoroethane (HFC-143a)
  • 1,2-difluoroethane (HFC-152)
  • 1,1-difluoroethane (HFC-152a)
  • 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea)
  • 1,1,1,2,2,3-hexafluoropropane (HFC-236cb)
  • 1,1,1,2,3,3-hexafluoropropane (HFC-236ea)
  • 1,1,1,3,3,3-hexafluoropropane (HFC-236fa)
  • 1,1,2,2,3-pentafluoropropane (HFC-245ca)
  • 1,1,1,3,3-pentafluoropropane (HFC-245fa)
  • 1,1,1,3,3-pentafluorobutane (HFC-365mfc)
  • 1,1,1,2,2,3,4,5,5,5-decafluoropentane (HFC-43-10mee)

Note: individuals and companies are entitled to claim information provided under the Canadian Environmental Protection Act (1999) and its regulations as confidential. Where the act or other legislation prohibits the disclosure of such information, it has been "masked" to protect it from disclosure.

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Gatineau QC  K1A 0H3

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