Registration Dossier

Physical & Chemical properties

Additional physico-chemical information

Administrative data

Endpoint:
additional physico-chemical information
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: non GLP but other quality assurance
Cross-reference
Reason / purpose:
reference to same study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010
Report Date:
2010

Materials and methods

Principles of method if other than guideline:
Chemistry /elemental analysis was determined using ICP (inductively Coupled Plasma spectroscopy). Metal speciation/metal mineralogy was assessed from Sequential extraction/metal analysis and mineralogical analysis (XRD and microscopes equipped with EDS (Energy Dispersive Spectrometry) and WDS (Wavelength Dispersive Spectrometry) analysers. The interpretation of the overall results was performed by expert (with profound knowledge of metal particularities).
GLP compliance:
no
Remarks:
other quality assurance
Endpoint investigated:
other: representative mineralogy

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Results:
The studied Flue dust, sample 09TT09775 contains 30.5% lead, 16.6% zinc, 11.8% Na2O, 2.5% cadmium, 2.2% sulphur, 1.5% iron, 1% SiO2 and traces of other elements.
The studied Flue dust, sample 09TT08073 contains 41% lead, 12.8% CaO, 10.5% sulphur, 2.2% K2O, 1.5% tin, 1% Na2O and traces of other elements.

The studied Flue dust, sample 09TT09775 consists mainly of Zn-bearing natrojarosite (51%), anglesite (20.4%) and metallic lead (14.8%). Other notable mineral phases are lead antimony-, lead zinc- and lead tin oxides (total 5.4%), zincite (5.1%) and zinc sodium- & lead silicate hydrates (total 2.2%).
The studied Flue dust, sample 09TT08073 consists mainly of fine-grained cotunnite, PbCl2 (48.7%), anhydrite (44.5%) and anglesite (6.9%).

Any other information on results incl. tables

Chemical composition of the reference samples

ORC ref.

 

 

OR27

OR12

Sample

 

 

2000171/19

2000171/15

Lab code

 

 

09TT09775      

09TT08073      

Substance

 

Flue dust lead refining

Flue dust lead blast furnace

EINECS

 

 

273-809-1

274-633-8

Consortium reference No.

9

30

 

 

 

 

 

Ag

KEM

%

0.009

<0.002

B

KEM

%

N/A

N/A

Bi

TOT

%

<0.03

< 0.010

Cd

TOT

%

2.49

0.672

Co

TOT

%

<0.01

<0.004

Mo

TOT

%

<0.005

< 0.004

Sb

TOT

%

1.6

0.363

Se

TOT

%

<0.002

0.021

Sn

TOT

%

0.37

1.5

Te

TOT

%

<0.02

< 0.020

Zn

TOT

%

16.6

0.24

 

 

 

 

 

SiO2

KEM

%

1.00

0.252

Al2O3

TOT

%

0.47

0.084

CaO

TOT

%

0.59

12.8

Cr2O3

TOT

%

0.032

<0.006

K2O

TOT

%

<0.1

2.2

MgO

TOT

%

0.2

0.287

MnO

TOT

%

0.017

0.025

Na2O

TOT

%

11.8

1.04

(SO4)2

KEM

%

6.28

31

 

 

 

 

 

S

LECO

%

2.16

10.5

C

LECO

%

0.03

0.32

 

 

 

 

 

Satmagan

 

%

0.22

0

ORC ref.

 

 

OR27

OR12

 

Sample

 

 

2000171/19

2000171/15

 

Lab code

 

 

09TT09775

09TT08073      

 

Substance

 

Flue dust lead refining

Flue dust lead blast furnace

 

EINECS

 

 

273-809-1

274-633-8

 

Consortium reference No.

9

30

 

 

 

 

 

 

 

As

P1

%

<0.004

<0.008

 

 

P2

%

0.077

0.05

 

 

P3

%

<0.005

<0.010

 

 

P4

%

0.006

0.01

 

 

PSUM

%

0.083

0.06

 

 

TOT

%

0.091

0.06

 

 

 

 

 

 

 

Cu

P1

%

<0.004

<0.008

 

 

P2

%

0.035

<0.20

 

 

P3

%

0.03

0.016

 

 

P4

%

0.024

0.006

 

 

PSUM

%

0.089

0.02

 

 

TOT

%

0.084

0.03

 

 

 

 

 

 

 

Fe

P1

%

<0.004

<0.008

 

 

P2

%

0.54

0.104

 

 

P3

%

0.009

<0.010

 

 

P4

%

0.73

0.145

 

 

PSUM

%

1.28

0.25

 

 

TOT

%

1.46

0.31

 

 

 

 

 

 

 

Ni

P1

%

<0.004

<0.008

 

 

P2

%

<0.010

<0.020

 

 

P3

%

<0.005

<0.010

 

 

P4

%

0.009

<0.004

 

 

PSUM

%

0.009

<0.004

 

 

TOT

%

0.016

<0.004

 

 

 

 

 

 

 

Pb

P1

%

0.015

0.537

 

 

P2

%

0.241

0.22

 

 

P3

%

0.89

2.05

 

 

P4

%

24.20

36.3

 

 

PSUM

%

25.35

39.11

 

 

TOT

%

30.50

41.00

 

Applicant's summary and conclusion

Conclusions:
Good quality study that assessed full chemistry and mineralogy of two representative samples of flue dust lead refining/flue dust blast furnace. The mineralogy (and the distribution pattern for each key element, i.e. % from Total into the various mineralogical forms/species present into the UVCB) of the reference samples can be used to derive the classification of flue dust lead refining (or flue dust blast furnace) samples (mixture toxicity rules).
Executive summary:

The studied Flue dust, sample 09TT09775 consists mainly of Zn-bearing natrojarosite (51%), anglesite (20.4%) and metallic lead (14.8%). Other notable mineral phases are lead antimony-, lead zinc- and lead tin oxides (total 5.4%), zincite (5.1%) and zinc sodium- & lead silicate hydrates (total 2.2%).

The studied Flue dust, sample 09TT08073 consists mainly of fine-grained cotunnite, PbCl2 (48.7%), anhydrite (44.5%) and anglesite (6.9%).

The mineralogy of the reference samples can be used to derive the classification of both samples but also to predict the mineralogy of other flue dust lead refining (or flue dust blast furnace) samples. Differences in speciation between the reference samples, and anticipated differences in classification, initially suggested the need for two grades of this intermediate based on the sulphur content. As a consequence, company specific classifications were calculated using one of the two different speciation patterns.

The calculator sheets, which are used to derive the classification and which reflect particular assumptions that are made, can be found in attachment above (attached background material).