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Physical & Chemical properties

Additional physico-chemical information

Administrative data

Endpoint:
other: representative mineralogy
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 for cross-reference:
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

Test material

Constituent 1
Reference substance name:
Lead alloy, base, Pb,Sn, dross
EC Number:
273-701-4
EC Name:
Lead alloy, base, Pb,Sn, dross
Cas Number:
69011-60-5
Molecular formula:
Molecular weight/formula concept not applicable to Inorganic UVCB (complex metal containing substance)
IUPAC Name:
Lead alloy, base, Pb,Sn, dross

Results and discussion

Results:
The studied dross sample 09TT11164 contains 28.1% tin, 21.9% copper, 17.2% Na2O, 14.6% lead, 2.8% SiO2, 1.9% zinc and traces of other elements.
The studied dross sample 09TT11164 consists mainly of sodium tin oxides (40.9%) and copper tin (+some metallic copper, total 31.2%). Other notable mineral phases are metallic lead (15.2%) and sodium silicates (12%).

Any other information on results incl. tables

Table 1 Chemical composition of studied sample

ORC ref.

 

 

OR18

P1= H2O

P2= H2SO4

P3=KCN+Br-MeOH

P4= HNO3

Sample

20000171/29

Psum=

sum of

four phases

Lab code

09TT11164

TOT=

total

dissolution

KEM=

ion exchange

chromatography

Substance

Lead alloy base Sn Pb dross

ELTRA=

S/C analyzer

EINECS

273-701-4

Satmagan =

Fe3O4

analyzer

Consortium reference No.

22

 

 

 

 

As

P1

%

0.1

Ag

KEM

%

0.016

P2

%

<0.020

B

KEM

%

N/A

P3

%

<0.010

Bi

TOT

%

<0.020

P4

%

<0.004

Cd

TOT

%

<0.004

PSUM

%

0.1

Co

TOT

%

<0.004

TOT

%

0.023

Mo

TOT

%

<0.004

 

Sb

TOT

%

0.041

Cu

P1

%

0.034

Se

TOT

%

<0.004

P2

%

6

Sn

TOT

%

28.10

P3

%

6.03

Te

TOT

%

<0.010

P4

%

9.59

Zn

TOT

%

1.93

PSUM

%

21.65

 

TOT

%

21.90

SiO2

KEM

%

2.84

 

Al2O3

TOT

%

0.021

Fe

P1

%

<0.008

CaO

TOT

%

0.027

P2

%

<0.020

Cr2O3

TOT

%

<0.006

P3

%

0.01

K2O

TOT

%

0.205

P4

%

<0.004

MgO

TOT

%

<0.007

PSUM

%

0.01

MnO

TOT

%

<0.005

TOT

%

0.006

Na2O

TOT

%

17.2

 

(SO4)2

KEM

%

0.066

Ni

P1

%

<0.004

 

P2

%

<0.008

S

LECO

%

0.04

P3

%

<0.020

C

LECO

%

0.28

P4

%

<0.010

 

PSUM

%

<0.020

Satmagan

%

0

TOT

%

0.029

 

Pb

P1

%

0.194

P2

%

0.501

 

P3

%

0.543

 

P4

%

12.70

 

PSUM

%

13.94

 

TOT

%

14.6

 

 

Table 2 Mineral composition and distribution of main elements of sample of lead alloy base Sn Pb dross

 

Lab code

09TT11164

Mineral composition

%

Sodium Tin Oxide

Na2SnO3

40.94

Copper Tin (+ metallic copper)

Cu5SnO (+ Cu)

31.18

Metallic lead

Pb

15.21

Sodium silicate (Sn-,Pb-, Zn-bearing)

Na4SiO4

12.06

Lead oxide

PbO

0.61

Total

100

Distribution of lead, -%

 

Metallic lead

92.07

Sodium Tin Oxide

3.90

Lead oxide

3.43

Sodium silicate (Sn-,Pb-, Zn-bearing)

0.60

Distribution of tin, -%

 

Sodium Tin Oxide

62.31

Copper Tin (+ metallic copper)

27.27

Sodium silicate (Sn-,Pb-, Zn-bearing)

10.39

Lead oxide

0.03

Distribution of copper, -%

 

Copper Tin

92.04

Sodium Tin Oxide

6.37

Metallic lead

0.94

Sodium silicate (Sn-,Pb-, Zn-bearing)

0.60

Lead oxide

0.05

 

Applicant's summary and conclusion

Conclusions:
Good quality study that assessed full chemistry and mineralogy of one representative sample of lead alloy base Sn Pb 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 sample can be used to derive the classification of lead alloy base Sn Pb dross samples (mixture toxicity rules).
Executive summary:

The studied dross sample 09TT11164 consists mainly of sodium tin oxides (40.9%) and copper tin (+some metallic copper, total 31.2%). Other notable mineral phases are metallic lead (15.2%) and sodium silicates (12%).

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 alloy base Sn Pb 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).