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EC number: 294-409-3
CAS number: 91722-09-7
Substance formed during processing of liquid steel or during production of iron castings. Consists primarily of fused silicates and trace elements as oxides as well as trace of alloying elements.
Table1 Absorption values blank isopropanol (OD at 570 nm)
The absorption values of negative control, test item and positive
control are given in the following table:
Table2 Absorption values negative control, test item and positive
control (OD at 570 nm)
converter - BOS,
fine-ground (< 90 µm)
From the measured absorptions, the mean of each tissue was
calculated, subtracting the mean absorption of isopropanol as given in
table 1. Mean and relative standard deviation (comparison of the three
tissues) were also calculated.
Table3 Mean absorption values
Mean – blank (Tissue 1)
Mean – blank (Tissue 2)
Mean – blank (Tissue 3)
Mean of the three tissues
Relative Standard Deviationof the three tissues
To determine the skin corrosion potential of slags, steelmaking,
converter - BOS), fine ground (< 90µm) was tested in the Human Skin
Model Test following EU-Method B.46. One valid experiment was performed.
Three tissues of the human skin model EpiDermTMwere
treated with Slag, steelmaking,
converter - BOS, fine-ground(< 90 µm) for 60 minutes.
30 µL of the eluat of the test item (using a nylon mesh) were
applied to each tissue and spread to match the tissue size.
DPBS-buffer was used as negative control, 5% SDS-solution was used
as positive control.
After treatment with the negative control, the absorbance values
were within the required acceptability criterion of 1.0 < mean OD < 2.5.
The positive control showed clear irritating effects. Variation within
tissues was acceptable (< 18%).
After the treatment with the test item, the relative absorbance
values were reduced to 96 %. This value is well above the threshold for
irritation potential (50%). Therefore, Slag, steelmaking, converter -
BOS, fine-ground (< 90 µm)is considered as not irritant in the Human
Skin Model Test.
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