Material description

Material ID: SRK07-S2

Material type: Paper backing sandwiched between aluminium foil sarking.

Additives (fire retardants, fillers or traces of inorganic elements): Aluminium (93%), Calcium (3%), Magnesium (2%), Chlorine (1%), Silicon (1%), traces of other elements (<1%)

Table 1. Estimated mass concentration of compounds.
CompoundMass Concentration (%)
Aluminium (Al)93
Calcium (Ca)3
Magnesium (Mg)2
Chlorine (Cl)1
Silicon (Si)1
Traces of iron (Fe)<1
Traces of sodium (Na)<1
Traces of potassium (K)<1
Traces of antimony (Sb)<1

A. Material composition identification

A.2 Energy Dispersive X-Ray Fluorescence (EDXRF)

Table 2. Inorganic elements and their mass concentration identified with EDXRF.
ElementMass Concentration (%)
Al93
Ca3
Mg2
Cl1
Si1
Fe<1
Na<1
K<1
Sb<1
Sc<1
...
Figure 3. EDXRF spectra. Counts vs energy. Identified elements are shown as vertical lines.