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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 lead antimonial dross sample 09TT11159 contains 75.3% lead, 6% Na2O, 4.2% zinc, 2.9% antimony and traces of other elements. The studied lead antimonial dross sample 09TT11159 consists mainly of metallic lead (57.4%) and lead sodium antimony oxide (31.2%). Other notable mineral phases are antimony sodium zinc oxide (5.2%) and zincite (+other zinc oxides / hydroxides, 4.3%). Lead silicate, oxides and anglesite, PbSO4, occurred as accessory mineral phases. This characteristic feature of this sample is coarse metallic lead grains. Complex particles are mainly mixing of different oxides including PbNaSb- and SbNaZn- and Zn oxides. The chemical composition of these three oxide phases varies greatly.

Any other information on results incl. tables

Chemical composition of studied sample

ORC ref.

 

 

OR30

P1= H2O

P2= H2SO4

P3= KCN+Br-MeOH

P4= HNO3

Sample

20000171/22

Psum=

sum of

four phases

Lab code

09TT11159

TOT=

total

dissolution

KEM=

ion exchange

chromatography

Substance

Lead antimonial dross

ELTRA=

S/C analyzer

EINECS

273-795-7

Satmagan =

Fe3O4

analyzer

Consortium reference No.

14

 

 

 

 

As

P1

%

<0.008

Ag

KEM

%

<0.002

P2

%

<0.020

B

KEM

%

N/A

P3

%

<0.010

Bi

TOT

%

<0.010

P4

%

<0.004

Cd

TOT

%

0.005

PSUM

%

<0.020

Co

TOT

%

<0.004

TOT

%

<0.010

Mo

TOT

%

<0.004

 

Sb

TOT

%

2.87

Cu

P1

%

<0.003

Se

TOT

%

<0.004

P2

%

<0.008

Sn

TOT

%

0.123

P3

%

<0.004

Te

TOT

%

<0.020

P4

%

<0.002

Zn

TOT

%

4.2

PSUM

%

<0.008

 

TOT

%

<0.004

SiO2

KEM

%

0.30

 

Al2O3

TOT

%

<0.019

Fe

P1

%

<0.003

CaO

TOT

%

0.013

P2

%

0.011

Cr2O3

TOT

%

<0.006

P3

%

0.005

K2O

TOT

%

0.066

P4

%

0.004

MgO

TOT

%

0.01

PSUM

%

0.02

MnO

TOT

%

<0.005

TOT

%

0.05

Na2O

TOT

%

6.03

 

(SO4)2

KEM

%

<0.01

Ni

P1

%

<0.003

 

P2

%

<0.008

S

LECO

%

0.01

P3

%

<0.004

C

LECO

%

0.38

P4

%

<0.002

 

PSUM

%

<0.008

Satmagan

%

0

TOT

%

<0.004

 

Pb

P1

%

0.037

P2

%

0.129

 

P3

%

1.43

 

P4

%

69.40

 

PSUM

%

71.00

 

TOT

%

75.3

 

P1= H2O , P2= H2SO4, P3= KCN+Br-MeOH, P4= HNO3–soluble, TOT= total -, BM= bromine-methanol dissolutions, KEM= ion exchange chromatography, LECO = S/C analyzer, satmagan = Fe3O4analyzer


Mineral composition and distribution of main elements

Sample

09TT11159

Type

Lead antimonial dross

Mineral composition

OR30

Metallic lead

57,44

Lead sodium antimony oxide

31,16

Antimony sodium zinc oxide

5,23

Zincite & other zinc oxides/hydroxides

4,30

Lead silicate

1,67

Lead oxide

0,15

anglesite

0,06

Total

100

 

 

Distribution of lead, -%

 

Metallic lead

71,71

Lead sodium oxide

26,47

Lead silicate

1,07

Antimpny sodium zinc oxide

0,43

Lead oxide

0,17

Zincite @ other zinc oxides /hydroxides

0,10

aglesite

0,05

 

 

Distribution of antimony, -%

 

Antimony sodium zinc oxide

89,61

Lead sodium antimony oxide

8,47

Lead silicate

1,42

Zincite & other zinc oxides

0,51

 

 

Distribution of zinc, -%

 

Zincite and other zinc oxides/hydroxides

79,57

Lead sodium antimony oxide

13,04

Antimony sodium zinc oxide

6,34

Lead silicate

1,04

Lead oxide

0,00


 

Applicant's summary and conclusion

Conclusions:
Good quality study that assessed full chemistry and mineralogy of one representative samples of lead antimonial dross. 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 lead antimonial dross samples (mixture toxicity rules).
Executive summary:

The studied lead antimonial dross sample 09TT11159 contains 75.3% lead, 6% Na2O, 4.2% zinc, 2.9% antimony and traces of other elements. The studied lead antimonial dross sample 09TT11159 consists mainly of metallic lead (57.4%) and lead sodium antimony oxide (31.2%). Other notable mineral phases are antimony sodium zinc oxide (5.2%) and zincite (+other zinc oxides / hydroxides, 4.3%). Lead silicate, oxides and anglesite, PbSO4, occurred as accessory mineral phases.

The mineralogy of the reference sample can be used to derive the classification of the sample but also to predict the mineralogy of other lead antimonial dross samples. The calculator sheet, which is used to derive the classification and which reflects particular assumptions that are made, can be found in attachment above (attached background material).