2.B.6 - Titanium Dioxide Production

Short description

Category Code Method AD EF
2.B.6 T3 C C
Key Category: -/- - -/- - - - -/- - -/- - - - - - -

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T = key source by Trend L = key source by Level

D Default
RA Reference Approach
T1 Tier 1 / Simple Methodology *
T2 Tier 2*
T3 Tier 3 / Detailed Methodology *
CS Country Specific
M Model
* as described in the EMEP/CORINAIR Emission Inventory Guidebook - 2007, in the group specific chapters.
AD - Data Source for Activity Data
NS National Statistics
RS Regional Statistics
IS International Statistics
PS Plant Specific data
AS Associations, business organisations
Q specific questionnaires, surveys
EF - Emission Factors
D Default (EMEP Guidebook)
C Confidential
CS Country Specific
PS Plant Specific data

In NFR 2.B.6, SO₂,CO,NOₓ and TSP emissions from the production of titanium dioxide are reported.


Activity Data

There are two kinds of processes called chloride process and sulfate process for the production of titanium dioxide. The total production amount is attained from the German Federal Statistical Office1).

For the calculation of individual production of each process, the fraction of chloride process is determined based on the estimated total production capacity in Germany (480 kt/y) and the production capacity via chloride process (165 kt/y) 2)3).

Emission Factors

Emission factors for titanium dioxide production are the Tier 2 emission factors from EMEP Guidebook: NOx, CO, and TSP are provided for the chloride process, while only factors for NOx and TSP are available for the sulfate process.

The applied Tier 2 emission factors are listed in Table 1 4).

Table 1: Tier 2 emission factors for titanium dioxide production, in [kg/t]

Pollutant Name of process Emission factor
CO Chloride 159
NOx 0.1
TSP 0.2
NOx Sulfate 0.108
TSP 0.3


The association of the titanium producers reports the sum of SO2 emissions from both processes directly to the UBA. These emissions are no longer confidential since submission 2022 und therefore are reallocated from 2.B.10 to this category since then. Besides, CO, NOₓ and TSP emissions are reported since submission 2022.

Except for SO2, emissions of the mentioned pollutants are calculated through the multiplication of activity data and corresponding emission factors.

As the emission factors are constant over the time, the emission trend is influenced only by the development of the production.


For SO2 emissions from the production of titanium dioxide and sulphuric acid, estimates reported for the second to last year of the time series are routinely actualised by the producers. Furthermore, definite emissions for the last year of the time series are not yet available at the time the inventory is compiled. Here, the reported values represent a prediction and are therefore updated with each new submission as well.

Otherwise, no recalculations have been carried out compared to last year's submission.

For pollutant-specific information on recalculated emission estimates for Base Year and 2020, please see the pollutant specific recalculation tables following chapter 8.1 - Recalculations.

Planned improvements

For 1990 and 1991 for reasons of confidentiality the SOx-emissions were replaced by the emissions value from 1992. Meanwhile the confidentiality does not anymore exist. So for the next submission the real SOx for 1990 and 1991 will be published.

1) Production statistics: Until 1994 GP89 - 4612 50, 1995 until 2008 GP241211500 and GP201211500 from 2009 onwards
4) European Environment Agency: EMEP/EEA air pollutant emission inventory guidebook 2019, Part B: sectoral guidance chapters, 2.B Chemical industry (Oct 2019): pp.25-26, table 3.19 and table 3.20