# Electronic specialty gases: Emissions

How a leaky gas outweighs its own production footprint

Source page: https://www.materialinsights.org/chemicals/electronic_gases/emissions/

What this tab covers The greenhouse-gas footprint per tonne, split by lifecycle phase (feedstock, production, movement, use, end of life), the global total, other environmental impacts, levers and low-carbon routes, India's position, and where the investment opportunity lies. Emission intensity 43.0 t CO2e per t NF3 range about 10 (well-abated) to over 350 (unabated) · indicative: production about 8 t plus use-phase release of about 2% of NF3 in remote plasma cleaning (IPCC default, indicative) x GWP 17,400 = about 350 t, cut about 90% by point-of-use abatement to about 35 t

Per t of NF3 (the largest fluorinated electronic gas), from production to use in an abated fab. Intensity: IPCC AR6 GWP and IPCC inventory guidance defaults (indicative); derived. Global total: not published.

#### Share of footprint by lifecycle phase
 Feedstock 7% Production / process 12% Movement 1% Use 80%

#### Footprint by lifecycle phase

| Phase | Intensity | Share | Main sources of emissions | Notes | Source |
|---|---|---|---|---|---|
| **Feedstock** | about 3 t CO2e per t NF3 | 7% | fluorspar, HF and ammonia production | Indicative | Indicative |
| **Production / process** | about 5 t CO2e per t NF3 | 12% | electrolysis power, fluorine production, fugitive NF3 at the plant | Indicative | Indicative |
| **Movement** | about 0.3 t CO2e per t | 1% | cylinder and ISO transport | Indicative | Indicative |
| **Use** | about 35 t CO2e per t NF3 with 90% abatement; about 350 t unabated | 80% | unreacted NF3 and by-product CF4 leaving process chambers | Fab abatement is the decisive lever | IPCC (indicative); derived |
| **End of life** | not applicable | – | gases are consumed or abated | Helium and neon can be recycled | Not applicable |

#### Other environmental impacts

Acute toxicity of hydrides and WF6; helium is a non-renewable resource; fluorinated gases are persistent in the atmosphere (CF4 for tens of thousands of years, indicative).

#### Levers to cut emissions

- Point-of-use abatement at over 90-95% destruction
- On-site F2 generation to replace NF3 for chamber cleaning (TECHCET 2022)
- Lower-GWP etch gases
- Helium and neon recovery (leading fabs reclaim 70-95% of helium)
- Low-carbon power for gas production

#### India

India's fabs and ATMP units are new, so abatement can be designed in; F-gas emissions from Indian fabs are not yet reported.
 Emission figures are indicative global averages from the life-cycle studies named; actual footprints vary widely by site, energy mix and method.

#### Low-carbon routes

| Route | Intensity | Cost premium | Status | Source |
|---|---|---|---|---|
| **On-site fluorine (F2) chamber cleaning** | GWP of F2 is zero | capex for on-site generators (not published) | under consideration by industry (TECHCET 2022) | TECHCET via Semiconductor Digest (2022) |
| **Helium recovery systems** | cuts helium use 70-95% | not published | standard at leading-edge fabs, especially EUV | Smith (Apr 2026) |

 For a climate investor Two climate-relevant openings. First, abatement and substitution: point-of-use abaters, on-site fluorine and low-GWP etchants cut the largest share of a fab's direct emissions, and Indian fabs can specify them from day one. Second, supply security: Semicon 2.0 pays for local gases, and the 2022 neon and 2026 helium shocks show the value of local purification, recycling and second sources. What has to be true: Indian fab output must arrive on schedule (Tata Dholera targets FY2029-30) and suppliers must qualify locally. Likely builders are global gas majors with Indian arms (Linde, Air Liquide, INOX Air Products) and Korean or Japanese specialists.

## Other sections

- [Summary](https://www.materialinsights.org/chemicals/electronic_gases/index.md)
- [Overview](https://www.materialinsights.org/chemicals/electronic_gases/overview/index.md)
- [Correlation](https://www.materialinsights.org/chemicals/electronic_gases/correlation/index.md)
- [Production route](https://www.materialinsights.org/chemicals/electronic_gases/routes/index.md)
- [Production](https://www.materialinsights.org/chemicals/electronic_gases/production/index.md)
- [Feedstocks](https://www.materialinsights.org/chemicals/electronic_gases/feedstocks/index.md)
- [Cycles](https://www.materialinsights.org/chemicals/electronic_gases/cycles/index.md)
- [Trading](https://www.materialinsights.org/chemicals/electronic_gases/trading/index.md)
- [Movement](https://www.materialinsights.org/chemicals/electronic_gases/movement/index.md)
- [Regulation](https://www.materialinsights.org/chemicals/electronic_gases/regulation/index.md)
- [Characteristics](https://www.materialinsights.org/chemicals/electronic_gases/characteristics/index.md)
- [Relationships](https://www.materialinsights.org/chemicals/electronic_gases/links/index.md)