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EC number: 205-117-2
CAS number: 133-66-4
Sample weight remains stable till to 320°C in air
Thermal stability on 133-66-4 was investigated by:
scanning calorimetry (DSC),
sample (7-8 mg) were closed in Aluminium pan and heated from 40°C to
400°C at 10°C/minute heating rate. DSC profile shows an endotermic event
from 100°C to 200°C with two maxima that is due to water
desorption. From 320°C an exothermic deflection of the base line clearly
indicate thermal decomposition of the optical brightener.
sample were heated in inert atmosphere (Nitrogen) from 40 to 850°C at
20°C heating rate. TGA loss profile confirms the water release at lower
temperatures. Sample weight remains stable till to 330°C. At higher
temperature a progressive weight loss is due to the sample decomposition.
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