Lead, antimonial, dross

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

Test material information

Constituent 1

Reference substance name:

Lead, antimonial, dross

EC Number:

273-795-7

EC Name:

Lead, antimonial, dross

Cas Number:

69029-51-2

Molecular formula:

Molecular weigth/formula concept not applicable to Inorganic UVCB (comlex metal containing substance)

IUPAC Name:

Lead, antimonial, dross

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).