ATH

Mineral: ATH

ATH (aluminium tri hydrate, chemical formula Al(OH)₃) is an intermediate product of aluminium production, characterised by: 

• High purity
• High whiteness
• Relatively low density of 2.4g/cm³ compared to other mineral fillers, which are typically at 2.7g/cm³
• Medium Mohs hardness of 3
• Decomposition around 200°C, releasing water 

 

Basic properties

Property	Value	Unit
Moisture	< 0.4	[%]
pH	9	[-]
Hardness (Mohs)	3	[-]
Refractive index	1.57	[-]
Electrical conductivity	60	[µS/cm]
L.O.I.	34.5	[%]
Density	2.4	[kg/ dm3]

 

Application specific products:

Product	Grade	D50 [µm]
Portaflame SG	7HB	2.3
	10	3.8
	35	15
	40	11.5
	10 LSA	17
	25 LSA	17
	30 LV	16

 

Production location (s): Maastricht (NL), Geertruidenberg (NL), Poviglio (IT), Brassington (UK), Balaruc (FR).

Functionality: Innert (UV transparent) filler, easy dispersbale in the fabric to ensure a proper impregnation (no filter effect, low viscosity).