Is this particular clay safe?

Hi everyone,

I have found a source for Bentonite clay in my area and was wondering whether it will be safe to use for baths:

Product description
Aspect: Beige – grey powder
Particle size: 70 – 80 % < 63 μm
Moisture content: 8 % ± 3 %
Bulk density: 800 ± 50 g / l
pH-value 8.0 – 9.0 (80 g / l H2O)
Chemical Analysis (typical values)
SiO2 57.4 %
MgO 3.9 %
Al2O3 18.1 %
Na2O 0.6 %
Fe2O3 5.0 %
K2O 1.6 %
CaO 3.3 %
Loss on ignition 9.1 %

I'm especially curious to know whether the Aluminum content will be ok.
Thanks for any help! Tweet