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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.
To determine the acute
inhalation toxicity of slags, ferrous metal, blast furnace (ground,
granulated – GGBS), a test was conducted with rats in accordance to OECD
Technical Guideline 403 (2009) and Directive 92/69/EEC. Annex V Method
B.2. GGBS was applied as a powder aerosol nose-only to one group of rats
for an exposure duration of 4 hours at a concentration of 5235 mg/m3
which was also the maximum technically attainable concentration.
The aerosol was respirable, i.e. the mass median aerodynamic diameter
(MMAD) was 3.1 µm, and the geometric standard deviation was 1.8 µm. The
exposure was followed by a postexposure observation period of 2 weeks.
No mortality occurred
and the 4 h-LC50 inhalation (powder, aerosol) was > 5235 mg/m3.
The following clinical signs were observed, some of them up to the sixth
postexposure day: labored breathing patterns, irregular breathing
patterns, hair coat ungroomed, piloerection, motility reduced, limp,
high-legged gait, nasal discharge (serous), hypothermia, and decreased
body weights. The 4 h-NO(A)EL was < 5235 mg/m3.
Slags, ferrous metal,
blast furnace (ground, granulated – GGBS) are not toxic to rats via the
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