reaction product of alumina and sulfuric acid

Flammability

Administrative data

Endpoint:

flammable solids

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the substance is known to be stable in contact with air at room temperature for prolonged periods of time (days) and hence, the classification procedure does not need to be applied

Cross-reference

Reason / purpose for cross-reference:

data waiving: supporting information

Reference

Endpoint:

water solubility

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2016-03-20 to 2016-03-23

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 105 (Water Solubility)

Qualifier:

according to guideline

Guideline:

EU Method A.6 (Water Solubility)

GLP compliance:

yes (incl. QA statement)

Type of method:

flask method

Specific details on test material used for the study:

Name Sulfuric acid, reaction product with alumina
Batch no. SSA-SD 0239
Appearance white powder
Composition reaction product of sulfuric acid with alumina,UVCB
CAS No. 1093112-19-6
EINECS-No. not applicable
Purity 100 %
Homogeneity homogeneous

Key result

Water solubility:

ca. 252 mg/L

Conc. based on:

test mat.

Temp.:

20 °C

Remarks on result:

other: concentration of Aluminium in water

Key result

Water solubility:

ca. 518 mg/L

Conc. based on:

test mat.

Temp.:

20 °C

Remarks on result:

other: concentration of Sulphur in water

Details on results:

At the plateau, the concentration of Aluminium in water had reached
252.1 ± 9.8 mg/L Al at 20.0 ± 0.5 °C
= 2.521 ± 0.098 * 10-1 kg/m3 (SI units)
(mean value ± standard deviation of six individual vessels, nominal load 50 g/L)

The concentration of Sulphur in water had reached
517.7 ± 24.7 mg/L S at 20.0 ± 0.5 °C
= 5.177 ± 0.247 * 10-1 kg/m3 (SI units)
(mean value ± standard deviation of six individual vessels, nominal load 50 g/L)

A partial solubility of the test item was observed due to the release of different ions from the test item (0.50 % Al and 1.04 % S, calculated from the nominal load of 50 g/L).

No Tyndall effect (i.e. a laser beam was not scattered when transmitted through the liquid) could be observed indicating that no colloidal dispersed particles are present.
The measured aluminium and sulphur concentrations showed good correspondence in all flasks. Therefore, all replicates were used in the calculation of the mean.

Conclusions:

Test item is poorly soluble: Aluminium reached 252 mg/L and Sulphur 518 mg/L (at 20°C)