Aluminium trihydroxide, Unground ATH, 55 μm

Catalog	ACM21645512-6
CAS	21645-51-2
Structure
Description	Aluminium trihydroxide (ATH) is a halogen free flame retardant filler. When heated above temperatures of approximately 200°C, an endothermic reaction will take place, liberating 3 molecules of crystal water and thereby removing energy from the combustion zone. The loss of 34.6 % of its weight as water vapour also dilutes combustible gases. Furthermore, no toxic smoke or decomposition products are formed during this reaction, making ATH an ideal product to comply with regulations.
Molecular Formula	Al(OH)3
Purity	0.997
Appearance	White powder
Application	Polyester Resins Acrylic Resins External Thermal Insulation (ETICS）
Content	Na2O total: 2300 ppm CaO: 100 ppm SiO2: 55 ppm Fe2O3: 65 ppm
Hardness	Mohs scale, 2.5-3.5
Loss On Ignition	34.6% (100-1000°C)
Moisture Content	0.001
Oil Absorption	22 ml/100g (oleic acid)
Particle Size	55 µm (D50)
RefractiveIndex	1.57
Specific Gravity	2.4g/cm³
Specific Surface Area	0.2 m2/g (BET)

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