Silicic acid, aluminum magnesium sodium salt

Stability: thermal, sunlight, metals

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

stability: thermal, sunlight, metals, other

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

other:

Reason / purpose for cross-reference:

data waiving: supporting information

Reference 2

Endpoint:

thermal stability

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

other: EU-Method 26433

GLP compliance:

yes (incl. QA statement)

Remarks:

(Landesamt für Umwelt-, Wasserwirtschaft und Gewerbeaufsicht, Rheinland-Pfalz)

Test substance thermally stable:

yes

Key result

Operating temp.:

>= 0 - <= 520 °C

Sublimation:

no

Transformation products:

no

Test substance stable to sunlight:

not determined

Test substance stable to metals / metal ions:

not determined

Conclusions:

In the observed temperature range 0-520 °C the test item shows no thermal instability, only an endotherm transition occured attributed to the loss of water beginning at 260°C
As no exothermic events occured, the test item is not self-reactive.

Executive summary:

During the DSC run only an endothermic thermal transition was observed, which could be caused by loss of water beginning at approx. 260 °C. After the test the test item remained visually unchanged.

As no exothermic events could be observed the test item is no subject to the classification procedures for self-reactive substances and the acceptance procedures for Class 1 explosives need not to be applied.

Description of key information

Due to its chemical structure the anorganic Silicic acid, aluminium magnesium sodium salt is not decomposed by light.

In the observed temperature range 0-520 °C  Silicic acid Aluminium Magnesium Sodium Salt shows no thermal instability, only an endotherm transition occured (due to loss of water). As no exothermic events occured, the test item is not self-reactive.

This fact is supported by another study on Sodium Aluminum Silicates with and without Alkali Carbonates which show a high thermal stability up to 800-1000°C.

There are no data about the stability of test item in contact with metals.

Substance is packaged in paper bags with a layer of plastic foil resp. bigpacks.