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Emission factor from UNEP Ozone Secretariat, Refrigeration, Air Conditioning and Heat Pumps Technical Options Committee (RTOC) 2022

HFO-1336mzz(Z) - cis-1,1,1,4,4,4-hexafluoro-2-butene

World · Fugitive releases · Any year

Each kilogram of cis-1,1,1,4,4,4-hexafluoro-2-butene released to the air counts as 2 kg CO₂e.

Value for cis-1,1,1,4,4,4-hexafluoro-2-butene, per kg leaked

2kgCO₂e/kg

Leak to air · GWP100

One value, for any year

UNEP sets no date window, so there is no year to pick.

Reference year 2022

Default: what search and the API return when you ask for nothing specific

1 kg leaked = 2 kg CO₂e

The same warming over 100 years as releasing 2 kg of carbon dioxide.

Refrigerant you topped up this year

1 kg= 2 kg CO₂e

No top-up records? Charge × yearly leak rate gives the kilograms.

Region
World GLOBAL
Boundary
Fugitive releases
Data quality
HighRated by us, not by the source
Licence
Open · UNEP terms

Where 2 comes from

Published as one number

UNEP prints this factor as a single figure, with no parts to add up and no split by gas.

Reporting this kilogram under the GHG Protocol

Scope 1 2

Gas that escapes from equipment you run is a direct emission, so it is your Scope 1.

CiteAPI

The factor, standardised

Every factor on open-climate.ai answers the same questions in the same words, whatever the publisher. Open any ⓘ for the definition.

Direct emissions › Fugitive emissions and refrigerants · World · per kg · Average

Fugitive releases · Excl. biogenic CO₂

Boundary
Fugitive releases
GWP method
Wmo2022
As printed by UNEP
CO₂e basis
Excl. biogenic CO₂FossilBio CH₄Land useBio CO₂GHG Protocol and IPCC inventories
Not split by gas; CO₂e only

High quality · Open licence · Any year

Every horizon, every IPCC report

A warming potential rests on two choices: how many years of warming are counted, and which IPCC assessment report supplies the numbers. UNEP publishes 2 of these 12 cells; the other 10 read “Not published by UNEP”.

This factor2 Wmo2022, GWP100
Cells published for this gas2 of 12 Wmo2022 only
kgCO₂e per kg of cis-1,1,1,4,4,4-hexafluoro-2-butene leaked, by horizon and IPCC report. Pick a cell to read it.
AR4IPCC, 2007AR5IPCC, 2013AR6IPCC, 2021Wmo2022
GWP2020 years
Not published by UNEP
Not published by UNEP
Not published by UNEP
GWP100100 years
Not published by UNEP
Not published by UNEP
Not published by UNEP
GWP500500 years
Not published by UNEP
Not published by UNEP
Not published by UNEP
Not published by UNEP

Default: what search and the API return when you ask for nothing specificNot published by UNEP

R1336mzz(Z): every publisher's GWP, side by side

What this number covers

One step: refrigerant leaving your equipment. Your records give the kilograms; the factor converts them.

  1. Refrigerant in your equipment

    The charge in a heat pump, air-conditioning unit or chiller. No emission while it stays in the circuit.

    Starting point, not counted

  2. Leak to air

    Refrigerant lost through seals and joints, during servicing, or in a failure. Counted as the kilograms you top up.

    Included1 kg

  3. Warming over 100 years

    Heat trapped by that kilogram, compared with 1 kg of CO₂, over 100 years.

    Included× 2

  4. Your footprint

    1 kg leaked, reported as CO₂e.

    = 2

Outside this boundary

  • Making the refrigerant
  • Recovery at end of life
  • Power the unit uses

Buying the gas is Scope 3, category 1, with its own factor, not this one.

A warming potential, not a measurement

Nobody measured this number at a site. It is the warming caused by 1 kg of the gas over 100 years, divided by the warming of 1 kg of CO₂. It is the same wherever the leak happens.

kg leaked × 2 = kg CO₂e

From UNEP's record to a comparable factor

UNEP publishes this factor as one record. Here is each field as printed and what open-climate.ai made of it.

About this factor

Filed by UNEP under

Unsaturated Organic Compounds

UNEP gives no description for this factor.

Source and licence

Publisher
UNEP
Library
Ozone Secretariat, Refrigeration, Air Conditioning and Heat Pumps Technical Options Committee (RTOC) 2022
Published
2023
Open the record at UNEP
UNEP's terms of use Open

The values and their metadata are served in full and may be reused with credit to the publisher.

No copyright involved
Credit it with this lineUNEP (2023). 2022 Report of the Refrigeration, Air Conditioning and Heat Pumps Technical Options Committee, 2022 Assessment. Ozone Secretariat, UNEP, Nairobi. ISBN 978-9914-733-93-8.
A plain reading of the licence, not legal advice. The licence text prevails.

Cite this factor

UNEP (2023). 2022 Report of the Refrigeration, Air Conditioning and Heat Pumps Technical Options Committee, 2022 Assessment. Ozone Secretariat, UNEP, Nairobi. ISBN 978-9914-733-93-8. Normalised by open-climate.ai, https://open-climate.ai/factors/libraries/unep/ (CC BY 4.0). https://open-climate.ai/factors/ef-unep-hfo1336mzzz-global-kg-fugitive-c9342efd/?v=efv1-7496c1fbde748be79b992a04a43d9687

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