Magnesium titanate

Melting point / freezing point

Administrative data

Endpoint:

melting point/freezing point

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

key study

Justification for type of information:

1. HYPOTHESIS FOR THE ANALOGUE APPROACH
A read-across based on analogue approach has been performed for that endpoint.
The read-across hypothesis, according to Read Across Assessment Framework published by ECHA, is based on the fact that different compounds which have the same type of effect(s). It corresponds to the scenario 2 described as follows:
« This scenario covers the analogue approach for which the read-across hypothesis is based on different compounds which have the same type of effect(s). For the REACH information requirement under consideration, the effects obtained in a study conducted with one source substance are used to predict the effects that would be observed in a study with the target substance if it were to be conducted. The same type of effect(s) or absence of effect is predicted. The predicted strength of the effects may be similar or based on a worst-case assumption. ».

2. SOURCE AND TARGET CHEMICAL(S) (INCLUDING INFORMATION ON PURITY AND IMPURITIES)
The read-across has been performed between magnesium titanate (CAS No. 12032-30-2; target chemical) and calcium titanate (CAS No. 12049-50-2; source chemical).

3. ANALOGUE APPROACH JUSTIFICATION
Both molecules share the same functional group. Therefore, they have common functional groups (Titanium trioxide and alkaline earth metal) and it is expected that these molecules have also common breakdown products and common mechanisms of action.


3. ANALOGUE APPROACH JUSTIFICATION
The read-across approach is justified because both compounds have strong structural similarities and it is expected that they also have common breakdown products or mechanism of action.
Based on these elements, it can be assumed that acetone magnesium titanate and calcium titanate may have similar toxicological properties. The read-across approach between the source and the target chemicals is therefore relevant for this endpoint.

Cross-reference

Reason / purpose for cross-reference:

read-across source

Reference

Endpoint:

melting point/freezing point

Type of information:

not specified

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

data from handbook or collection of data

Qualifier:

no guideline followed

Principles of method if other than guideline:

Handbook data; no guideline stated

Type of method:

other: Handbook data; no guideline stated

Key result

Melting / freezing pt.:

1 980 °C

Remarks on result:

other: Handbook data

Conclusions:

The melting point of calcium titanate is 1,980°C.

Executive summary:

The melting point of calcium titanate is 1,980°C. This figure was obtained from CRC handbook data.

Materials and methods

Test material

Test material information

Constituent 1

Reference substance name:

Magnesium titanate

EC Number:

234-766-4

EC Name:

Magnesium titanate

Cas Number:

12032-30-3

Molecular formula:

Mg.O3Ti

IUPAC Name:

magnesium titanate

Results and discussion

Melting / freezing point

Key result

Melting / freezing pt.:

1 980 °C

Remarks on result:

other: no information upon method